2177:, Green Mountain Dairy has provided renewable energy as part of the Cow Power program. It started when the brothers who own the farm, Bill and Brian Rowell, wanted to address some of the manure management challenges faced by dairy farms, including manure odor, and nutrient availability for the crops they need to grow to feed the animals. They installed an anaerobic digester to process the cow and milking center waste from their 950 cows to produce renewable energy, a bedding to replace sawdust, and a plant-friendly fertilizer. The energy and environmental attributes are sold to the GMP Cow Power program. On average, the system run by the Rowells produces enough electricity to power 300 to 350 other homes. The generator capacity is about 300 kilowatts.
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funding, absence of policy, regulatory framework and strategies on biogas, unfavorable investor monetary policy, inadequate expertise, lack of awareness of the benefits of biogas technology among leaders, financial institutions and locals, resistance to change due cultural and traditions of the locals, high installation and maintenance costs of biogas digesters, inadequate research and development, improper management and lack of monitoring of installed digesters, complexity of the carbon market, lack of incentives and social equity are among the challenges that have impeded the acquiring and sustainable implementation of domestic biogas production in Zambia.
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In 2011 energy crops for biogas production consumed an area of circa 800,000 ha in
Germany. This high demand of agricultural areas generates new competitions with the food industries that did not exist hitherto. Moreover, new industries and markets were created in predominately rural regions entailing different new players with an economic, political and civil background. Their influence and acting has to be governed to gain all advantages this new source of energy is offering. Finally biogas will furthermore play an important role in the German renewable energy supply if good governance is focused.
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focus on biogas as a cooking fuel alternative in urban establishments. This has led to the development of prefabricated digester for modular deployments as compared to RCC and cement structures which take a longer duration to construct. Renewed focus on process technology like the
Biourja process model has enhanced the stature of medium and large scale anaerobic digester in India as a potential alternative to LPG as primary cooking fuel.
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2345:, and reduces the time needed for traditional biomass collection, especially for women and children. The slurry is a clean organic fertilizer that potentially increases agricultural productivity. In developing countries, it was also determined that the use of biogas leads to a 20% reduction in GHG emissions compared with GHG emissions due to firewood. Moreover, GHG emissions of 384.1 kg CO2-eq·y−1 per animal could be prevented.
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1768:, the millions of cattle in the United States would be able to produce 100 billion kilowatt hours of electricity, enough to power millions of homes across the United States. One cow can produce enough manure in one day to generate 3 kilowatt hours of electricity. Furthermore, by converting cattle manure into methane biogas instead of letting it decompose, global warming gases could be reduced by 99 million metric tons or 4%.
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2127:(CFR) requires landfill owners to estimate the quantity of non-methane organic compounds (NMOCs) emitted. If the estimated NMOC emissions exceeds 50 tonnes per year, the landfill owner is required to collect the gas and treat it to remove the entrained NMOCs. That usually means burning it. Because of the remoteness of landfill sites, it is sometimes not economically feasible to produce electricity from the gas.
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biogas plants are directly connected with a CHP which produces electric power by burning the bio methane. The electrical power is then fed into the public power grid. In 2010, the total installed electrical capacity of these power plants was 2,291 MW. The electricity supply was approximately 12.8 TWh, which is 12.6% of the total generated renewable electricity.
939:. Higher quantities of biogas can be produced when the wastewater is co-digested with other residuals from the dairy industry, sugar industry, or brewery industry. For example, while mixing 90% of wastewater from beer factory with 10% cow whey, the production of biogas was increased by 2.5 times compared to the biogas produced by wastewater from the brewery only.
2288:, German for renewable resources) mixed with manure. The main crop used is corn. Organic waste and industrial and agricultural residues such as waste from the food industry are also used for biogas generation. In this respect, biogas production in Germany differs significantly from the UK, where biogas generated from landfill sites is most common.
2429:. The gas pipe is connected to the kitchen fireplace through control valves. The combustion of this biogas has very little odour or smoke. Owing to simplicity in implementation and use of cheap raw materials in villages, it is one of the most environmentally sound energy sources for rural needs. One type of these system is the
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water and feed it into the plant. Toilets can be connected. Another precondition is the temperature that affects the fermentation process. With an optimum at 36 °C the technology especially applies for those living in a (sub) tropical climate. This makes the technology for small holders in developing countries often suitable.
2560:"Cow Town", written in the early 1940s, discusses the travails of a city vastly built on cow manure and the hardships brought upon by the resulting methane biogas. Carter McCormick, an engineer from a town outside the city, is sent in to figure out a way to utilize this gas to help power, rather than suffocate, the city.
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This continual trend of renewable energy promotion induces a number of challenges facing the management and organisation of renewable energy supply that has also several impacts on the biogas production. The first challenge to be noticed is the high area-consuming of the biogas electric power supply.
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In Italy the biogas industry first started in 2008, thanks to the introduction of advantageous feed tariffs. They were later replaced by feed-in premiums and the preference was given to by products and farming waste and leading to stagnation in biogas production and derived heat and electricity since
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With the many benefits of biogas, it is starting to become a popular source of energy and is starting to be used in the United States more. In 2003, the United States consumed 43 TWh (147 trillion BTU) of energy from "landfill gas", about 0.6% of the total U.S. natural gas consumption.
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The
Resource Recovery and Reuse (RRR) ) is a subprogram of the CGIAR Research Program on Water, Land and Ecosystems (WLE) dedicated to applied research on the safe recovery of water, nutrients and energy from domestic and agro-industrial waste streams. They believe using waste as energy would be good
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Ultrasonic flow meters are one of the few devices capable of measuring in a biogas atmosphere. Most of thermal flow meters are unable to provide reliable data because the moisture causes steady high flow readings and continuous flow spiking, although there are single-point insertion thermal mass flow
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Energy is an important part of modern society and can serve as one of the most important indicators of socio-economic development. As much as there have been advancements in technology, even so, some three billion people, primarily in the rural areas of developing countries, continue to access their
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is a product of onsite sanitation systems. Post collection and transportation, Faecal sludge can be treated with sewage in a conventional treatment plant, or otherwise it can be treated independently in a faecal sludge treatment plant. Faecal sludge can also be co-treated with organic solid waste in
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Biogas is part of the wet gas and condensing gas (or air) category that includes mist or fog in the gas stream. The mist or fog is predominately water vapor that condenses on the sides of pipes or stacks throughout the gas flow. Biogas environments include wastewater digesters, landfills, and animal
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If concentrated and compressed, it can be used in vehicle transportation. Compressed biogas is becoming widely used in Sweden, Switzerland, and
Germany. A biogas-powered train, named Biogaståget Amanda (The Biogas Train Amanda), has been in service in Sweden since 2005. Biogas powers automobiles. In
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The most prevalent method is water washing where high pressure gas flows into a column where the carbon dioxide and other trace elements are scrubbed by cascading water running counter-flow to the gas. This arrangement could deliver 98% methane with manufacturers guaranteeing maximum 2% methane loss
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gas purification techniques. As produced, biogas contains water vapor. The fractional volume of water vapor is a function of biogas temperature; correction of measured gas volume for water vapour content and thermal expansion is easily done via simple mathematics which yields the standardized volume
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in small-scale digestion facilities is called gobar gas; it is estimated that such facilities exist in over 2 million households in India, 50,000 in
Bangladesh and thousands in Pakistan, particularly North Punjab, due to the thriving population of livestock. The digester is an airtight circular pit
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Depending on size and location, a typical brick made fixed dome biogas plant can be installed at the yard of a rural household with the investment between US$ 300 to $ 500 in Asian countries and up to $ 1400 in the
African context. A high quality biogas plant needs minimum maintenance costs and can
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The German agricultural biogas production was given a further push in 2004 by implementing the so-called NawaRo-Bonus. This is a special payment given for the use of renewable resources, that is, energy crops. In 2007 the German government stressed its intention to invest further effort and support
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Germany is Europe's biggest biogas producer and the market leader in biogas technology. In 2010 there were 5,905 biogas plants operating throughout the country: Lower Saxony, Bavaria, and the eastern federal states are the main regions. Most of these plants are employed as power plants. Usually the
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The number of farm-based digesters increased by 21% in 2021 according to the
American Biogas Council. In Vermont biogas generated on dairy farms was included in the CVPS Cow Power program. The program was originally offered by Central Vermont Public Service Corporation as a voluntary tariff and now
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when mixed in the ratio of one part biogas to 8–20 parts air. Special safety precautions have to be taken for entering an empty biogas digester for maintenance work. It is important that a biogas system never has negative pressure as this could cause an explosion. Negative gas pressure can occur if
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in some parts of the world. Biogas can be cleaned and upgraded to natural gas standards, when it becomes bio-methane. Biogas is considered to be a renewable resource because its production-and-use cycle is continuous, and it generates no net carbon dioxide. From a carbon perspective, as much carbon
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LPG (Liquefied
Petroleum Gas) is a key source of cooking fuel in urban India and its prices have been increasing along with the global fuel prices. Also the heavy subsidies provided by the successive governments in promoting LPG as a domestic cooking fuel has become a financial burden renewing the
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particularly in tropical countries like India which can displace the prime position of crude oil in near future. Union government of India is implementing many schemes to utilise productively the agro waste or biomass in rural areas to uplift rural economy and job potential. With these plants, the
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Biogas in India has been traditionally based on dairy manure as feed stock and these "gobar" gas plants have been in operation for a long period of time, especially in rural India. In the last 2–3 decades, research organisations with a focus on rural energy security have enhanced the design of the
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alternatives. This impact can be reduced by using correct combination of feedstocks, covered storage for digesters and improved techniques for retrieving escaped material. Overall, the results still suggest that using biogas can lead to significant reduction in most impacts compared to fossil fuel
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Otoo, M.; Drechsel, P.; Danso, G.; Gebrezgabher, S.; Rao, K.; Madurangi, G. (2016). Testing the implementation potential of resource recovery and reuse business models: from baseline surveys to feasibility studies and business plans (Report). International Water
Management Institute (IWMI). CGIAR
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In
February 2009, the European Biogas Association (EBA) was founded in Brussels as a non-profit organisation to promote the deployment of sustainable biogas production and use in Europe. EBA's strategy defines three priorities: establish biogas as an important part of Europe's energy mix, promote
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The waste is covered and mechanically compressed by the weight of the material that is deposited above. This material prevents oxygen exposure thus allowing anaerobic microbes to thrive. Biogas builds up and is slowly released into the atmosphere if the site has not been engineered to capture the
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Domestic biogas plants convert livestock manure and night soil into biogas and slurry, the fermented manure. This technology is feasible for small-holders with livestock producing 50 kg manure per day, an equivalent of about 6 pigs or 3 cows. This manure has to be collectable to mix it with
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In the face of research work and implementation of biogas having started as early as in the 1980s, Zambia is lagging behind in the adoption and use of biogas in the sub-Saharan Africa. Animal manure and crop residues are required for the provision of energy for cooking and lighting. Inadequate
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China had 26.5 million biogas plants, with an output of 10.5 billion cubic meter biogas until 2007. The annual biogas output has increased to 248 billion cubic meter in 2010. The Chinese government had supported and funded rural biogas projects. As of 2023, more than 30 million rural Chinese
1102:(BOD) is a measure of the amount of oxygen required by aerobic micro-organisms to decompose the organic matter in a sample of material being used in the biodigester as well as the BOD for the liquid discharge allows for the calculation of the daily energy output from a biodigester.
2296:). This law guaranteed the producers of energy from renewable sources the feed into the public power grid, thus the power companies were forced to take all produced energy from independent private producers of green energy. In 2000 the Electricity Feed-in Act was replaced by the
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Another term related to biodigesters is effluent dirtiness, which tells how much organic material there is per unit of biogas source. Typical units for this measure are in mg BOD/litre. As an example, effluent dirtiness can range between 800 and 1200 mg BOD/litre in Panama.
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meters capable of accurately monitoring biogas flows with minimal pressure drop. They can handle moisture variations that occur in the flow stream because of daily and seasonal temperature fluctuations, and account for the moisture in the flow stream to produce a dry gas value.
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gas engines. Other internal combustion engines such as gas turbines are suitable for the conversion of biogas into both electricity and heat. The digestate is the remaining inorganic matter that was not transformed into biogas. It can be used as an agricultural fertiliser.
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The level of development varies greatly in Europe. While countries such as Germany, Austria, Sweden and Italy are fairly advanced in their use of biogas, there is a vast potential for this renewable energy source in the rest of the continent, especially in Eastern Europe.
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has advocated for mixing biogas into existing natural gas pipelines. However, California state officials have taken the position that biogas is "better used in hard-to-electrify sectors of the economy-- like aviation, heavy industry and long-haul trucking".
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In Pakistan, the Rural Support Programmes Network is running the Pakistan Domestic Biogas Programme which has installed 5,360 biogas plants and has trained in excess of 200 masons on the technology and aims to develop the Biogas Sector in Pakistan.
2200:(IMUS) to produce heat for its boilers by utilizing feedlot manure, municipal organics and ethanol plant waste. At full capacity the plant is expected to replace 90% of the fossil fuel used in the manufacturing process of ethanol and methanol.
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plant. By switching to methane biogas, the ethanol power plant has saved 1000 barrels of oil a day. Over all, the power plant has reduced transportation costs and will be opening many more jobs for future power plants that will rely on biogas.
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enough to power millions of homes across America. Furthermore, methane biogas has been tested to prove that it can reduce 99 million metric tons of greenhouse gas emissions or about 4% of the greenhouse gases produced by the United States.
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During the winter, the biogas production in northern regions of China is lower. This is caused by the lack of heat control technology for digesters thus the co-digestion of different feedstock failed to complete in the cold environment.
2237:. Different legal frameworks, education schemes and the availability of technology are among the prime reasons behind this untapped potential. Another challenge for the further progression of biogas has been negative public perception.
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The appropriate management of excreta and its valorisation through the production of biogas from faecal sludge helps mitigate the effects of poorly managed excreta such as waterborne diseases and water and environmental pollution.
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Domestic biogas technology is a proven and established technology in many parts of the world, especially Asia. Several countries in this region have embarked on large-scale programmes on domestic biogas, such as China and India.
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Before being injected in the gas grid, biogas passes a cleaning process, during which it is upgraded to natural gas quality. During the cleaning process trace components harmful to the gas grid and the final users are removed.
1875:. If the local gas network allows, the producer of the biogas may use their distribution networks. Gas must be very clean to reach pipeline quality and must be of the correct composition for the distribution network to accept.
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Frequent smell checks must be performed on a biogas system. If biogas is smelled anywhere windows and doors should be opened immediately. If there is a fire the gas should be shut off at the gate valve of the biogas system.
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detailed the biogas production process from pig manure and showed how it fueled a custom-adapted combustion engine. In 2007, an estimated 12,000 vehicles were being fueled with upgraded biogas worldwide, mostly in Europe.
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Biogas production in Germany has developed rapidly over the last 20 years. The main reason is the legally created frameworks. Government support of renewable energy started in 1991 with the Electricity Feed-in Act
2360:, SNV, supports national programmes on domestic biogas that aim to establish commercial-viable domestic biogas sectors in which local companies market, install and service biogas plants for households. In Asia,
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with a recent merger with Green Mountain Power is now the GMP Cow Power Program. Customers can elect to pay a premium on their electric bill, and that premium is passed directly to the farms in the program. In
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Webber, Michael E and Amanda D Cuellar. "Cow Power. In the News: Short News Items of Interest to the Scientific Community." Science and Children os 46.1 (2008): 13. Gale. Web. 1 October 2009 in United States.
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typically has methane concentrations around 50%. Advanced waste treatment technologies can produce biogas with 55–75% methane, which for reactors with free liquids can be increased to 80–90% methane using
1930:, resulting in a reduction of losses in the transportation of energy. Typical energy losses in natural gas transmission systems range from 1% to 2%; in electricity transmission they range from 5% to 8%.
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is working in Nepal, Vietnam, Bangladesh, Bhutan, Cambodia, Lao PDR, Pakistan and Indonesia, and in Africa; Rwanda, Senegal, Burkina Faso, Ethiopia, Tanzania, Uganda, Kenya, Benin and Cameroon.
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Manufacturing of biogas from intentionally planted maize has been described as being unsustainable and harmful due to very concentrated, intense and soil eroding character of these plantations.
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In South Africa a prebuilt Biogas system is manufactured and sold. One key feature is that installation requires less skill and is quicker to install as the digester tank is premade plastic.
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source separation of household waste to increase the gas potential, and support the production of biomethane as vehicle fuel. In July 2013, it had 60 members from 24 countries across Europe.
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The methane in biogas is 28 times more potent a greenhouse gas than carbon dioxide. Therefore, uncontained landfill gas, which escapes into the atmosphere may significantly contribute to the
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that treats farm wastes or energy crops. It can be produced using anaerobic digesters (air-tight tanks with different configurations). These plants can be fed with energy crops such as maize
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the post-apocalyptic settlement Barter town is powered by a central biogas system based upon a piggery. As well as providing electricity, methane is used to power Barter's vehicles.
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As of September 2013, there are about 130 non-sewage biogas plants in the UK. Most are on-farm, and some larger facilities exist off-farm, which are taking food and consumer wastes.
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may be 90% of the total solids. Protein would be 20% of the volatile solids, carbohydrates would be 70% of the volatile solids, and finally fats would be 10% of the volatile solids.
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mixture. In India, the brick model costs slightly more than the ferrocement model; however, India's Ministry of New and Renewable Energy offers some subsidy per model constructed.
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From 1 kg of decommissioned kitchen bio-waste, 0.45 m of biogas can be obtained. The price for collecting biological waste from households is approximately €70 per ton.
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The composition of biogas varies depending upon the substrate composition, as well as the conditions within the anaerobic reactor (temperature, pH, and substrate concentration).
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Deng, Yanfei; Xu, Jiuping; Liu, Ying; Mancl, Karen (2014). "Biogas as a sustainable energy source in China: Regional development strategy application and decision making".
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result when the balance favors methanogens. Wetland soils are the main natural source of methane. Other sources include oceans, forest soils, termites, and wild ruminants.
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more efficient. During the last few years, technology has met high growth rates. This seems to be the earliest developments in generating biogas from agricultural waste.
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State Energy Conservation Office (Texas). "Biomass Energy: Manure for Fuel." State Energy Conservation Office (Texas). State of Texas, 23 April 2009. Web. 3 October 2009.
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The rural biogas construction in China has shown an increased development trend. The exponential growth of energy supply caused by rapid economic development and severe
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Roubík, Hynek; Mazancová, Jana; Banout, Jan; Verner, Vladimír (20 January 2016). "Addressing problems at small-scale biogas plants: a case study from central Vietnam".
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in improving the renewable energy supply to provide an answer on growing climate challenges and increasing oil prices by the 'Integrated Climate and Energy Programme'.
1898:. In addition to these, the use of membrane separation technology for biogas upgrading is increasing, and there are already several plants operating in Europe and USA.
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1764:) is 320 times more aggressive as a greenhouse gas than carbon dioxide and methane 25 times more than carbon dioxide. By converting cow manure into methane biogas via
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harvested from "mud from a frozen lake in Alaska" has produced 200–300 liters of methane per day, about 20–30% of the output from digesters in warmer climates.
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gas. Landfill gas released in an uncontrolled way can be hazardous since it can become explosive when it escapes from the landfill and mixes with oxygen. The lower
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by Paolo Farah and Riccardo Tremolada. This is a paper presented at the Colloquium on Environmental Scholarship 2013 hosted by Vermont Law School (11 October 2013)
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Lusaka, the capital city of Zambia, has two million inhabitants with over half of the population residing in peri-urban areas. The majority of this population use
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made of concrete with a pipe connection. The manure is directed to the pit, usually straight from the cattle shed. The pit is filled with a required quantity of
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bacteria culture with tiny land and water foot print. The carbon dioxide gas produced as by product from these plants can be put to use in cheaper production of
3553:"Biogas CHP – Alfagy – Profitable Greener Energy via CHP, Cogen and Biomass Boiler using Wood, Biogas, Natural Gas, Biodiesel, Vegetable Oil, Syngas and Straw"
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Biogas which is mainly methane/natural gas can also be used for generating protein rich cattle, poultry and fish feed in villages economically by cultivating
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including sewage sludge and food waste. During the process, the micro-organisms transform biomass waste into biogas (mainly methane and carbon dioxide) and
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4033:"CHP | Combined Heat and Power | Cogeneration | Wood Biomass Gasified Co-generation | Energy Efficiency | Electricity Generation"
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energy needs for cooking through traditional means by burning biomass resources like firewood, crop residues and animal dung in crude traditional stoves.
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too much gas is removed or leaked; Because of this biogas should not be used at pressures below one column inch of water, measured by a pressure gauge.
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presents additional risks and has been responsible for serious accidents. Leaks of unburned methane are an additional risk, because methane is a potent
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Richards, B.; Herndon, F. G.; Jewell, W. J.; Cummings, R. J.; White, T. E. (1994). "In situ methane enrichment in methanogenic energy crop digesters".
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dioxide is absorbed from the atmosphere in the growth of the primary bio-resource as is released, when the material is ultimately converted to energy.
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The Chinese have experimented with the applications of biogas since 1958. Around 1970, China had installed 6,000,000 digesters in an effort to make
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Richards, B.; Cummings, R.; White, T.; Jewell, W. (1991). "Methods for kinetic analysis of methane fermentation in high solids biomass digesters".
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826:. In the United Kingdom, for example, biogas is estimated to have the potential to replace around 17% of vehicle fuel. It qualifies for renewable
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Chen, Yu; Yang, Gaihe; Sweeney, Sandra; Feng, Yongzhong (2010). "Household biogas use in rural China: A study of opportunities and constraints".
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Countries such as the United Kingdom and Germany now have legislation in force that provides farmers with long-term revenue and energy security.
4801:"Erneuerbare Energien – Räumliche Dimensionen, neue Akteurslandschaften und planerische (Mit)Gestaltungspotenziale am Beispiel des Biogaspfades"
3948:"Decentralized options for faecal sludge management in urban slum areas of Sub-Saharan Africa: A review of technologies, practices and end-uses"
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and for heating purpose, such as in cooking. It can also be used in a gas engine to convert the energy in the gas into electricity and heat.
5121:"Current approach to manure management for small-scale Southeast Asian farmers - Using Vietnamese biogas and non-biogas farms as an example"
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On 5 October 2010, biogas was injected into the UK gas grid for the first time. Sewage from over 30,000 Oxfordshire homes is sent to Didcot
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The EU mandates that internal combustion engines with biogas have ample gas pressure to optimize combustion, and within the European Union
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as toilets generating approximately 22,680 tons of fecal sludge per annum. This sludge is inadequately managed: Over 60% of the generated
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works, where it is treated in an anaerobic digestor to produce biogas, which is then cleaned to provide gas for approximately 200 homes.
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A Comparison between Shale Gas in China and Unconventional Fuel Development in the United States: Health, Water and Environmental Risks
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Wieland, P. (2006). "Biomass Digestion in Agriculture: A Successful Pathway for the Energy Production and Waste Treatment in Germany".
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Hidenori Harada; Linda Strande; Shigeo Fujii (2016). "Challenges and Opportunities of Faecal Sludge Management for Global Sanitation".
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Book: Biogas from Waste and Renewable Resources. WILEY-VCH Verlag GmbH & Co. KGaA, (2008) Dieter Deublein and Angelika Steinhauser
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The purpose of industrial biogas production is the collection of biomethane, usually for fuel. Industrial biogas is produced either;
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5957:"Enhancing faecal sludge management in peri-urban areas of Lusaka through faecal sludge valorisation: challenges and opportunities"
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Contemporary biogas production provides new opportunities for skilled employment, drawing on the development of new technologies.
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2969:"Incomplete understanding of biogas chemical hazards – Serious gas poisoning accident while unloading food waste at biogas plant"
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means "friend of the helpless".) The unit usually has a capacity of 2 to 3 cubic metres. It is constructed using bricks or by a
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Le Mer, Jean; Roger, Pierre (January 2001). "Production, oxidation, emission and consumption of methane by soils: A review".
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are produced when manure is stored under anaerobic conditions. During storage and when manure has been applied to the land,
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deposits accumulate to a surface thickness of several millimeters and must be removed by chemical or mechanical means.
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Petersson A., Wellinger A. (2009). Biogas upgrading technologies – developments and innovations. IEA Bioenergy Task 37
2304:). This law even guaranteed a fixed compensation for the produced electric power over 20 years. The amount of around 8
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in the system. It takes roughly between 3% and 6% of the total energy output in gas to run a biogas upgrading system.
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Biogas in Germany is primarily extracted by the co-fermentation of energy crops (called 'NawaRo', an abbreviation of
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non-edible biomass or waste of edible biomass is converted in to high value products without any water pollution or
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Semiyaga, Swaib; Okure, Mackay A. E.; Niwagaba, Charles B.; Katukiza, Alex Y.; Kansiime, Frank (1 November 2015).
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In soil, methane is produced in anaerobic environments by methanogens, but is mostly consumed in aerobic zones by
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3869:"Life cycle environmental impacts of generating electricity and heat from biogas produced by anaerobic digestion"
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2012.As of September 2018, in Italy there are more than 200 biogas plants with a production of about 1.2 GW
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Projects such as NANOCLEAN are nowadays developing new ways to produce biogas more efficiently, using iron oxide
1996:) plant. Unlike the other green energy such as wind and solar, the biogas can be quickly accessed on demand. The
1635:
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For 1000 kg (wet weight) of input to a typical biodigester, total solids may be 30% of the wet weight while
1068:
Landfill gas is produced by wet organic waste decomposing under anaerobic conditions in a similar way to biogas.
368:
6182:
5777:
Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
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Methane biogas derived from cow manure is being tested in the U.S. According to a 2008 study, collected by the
959:
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6187:
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4929:"Emission reduction potential of household biogas plants in developing countries: The case of central Vietnam"
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3712:
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produce gas for at least 15–20 years without major problems and re-investments. For the user, biogas provides
8507:
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7709:
7420:
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3917:"Creating BIOGAS+: a new technology to improve the efficiency and profitability in the treatment of biowaste"
2120:
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There are four main methods of upgrading: water washing, pressure swing absorption, selexol absorption, and
8875:
8513:
7505:
6382:
5775:
Hu, Die (2015). "Hebei Province Qing County Straw Partnerships Biogas Application and Promotion Research".
4086:"Rethinking Manure Biogas: Policy Considerations to Promote Equity and Protect the Climate and Environment"
3198:
3156:
2712:
1517:
Practical and cost-effective technologies to remove siloxanes and other biogas contaminants are available.
6159:"Rethinking Manure Biogas: Policy Considerations to Promote Equity and Protect the Climate and Environment
5309:
4928:
2452:
As of at least 2023, China is both the world's largest producer and largest consumer of household biogas.
803:. The methane can be combusted or oxidized with oxygen. This energy release allows biogas to be used as a
8925:
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6645:
5361:
2762:
668:
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Michael Fredenslund, Anders; Gudmundsson, Einar; Maria Falk, Julie; Scheutz, Charlotte (February 2023).
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remains within the residential environment thereby compromising both the environment and public health.
8890:
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6109:. United Nations, New York, (1984) Energy Resources Development Series No. 27. p. 178, 30 cm.
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There are a variety of grants and loans the support the development of anaerobic digestor systems. The
1807:
1441:
of materials commonly found in soaps and detergents. During combustion of biogas containing siloxanes,
538:
4678:
Wieland, P. (2003). "Production and Energetic Use of Biogas from Energy Crops and Wastes in Germany".
4274:"Fearing for Its Future, a Big Utility Pushes 'Renewable Gas,' Urges Cities to Reject Electrification"
8930:
8920:
8547:
7563:
6703:
6411:
5500:
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Ghimire, Prakash C. (1 January 2013). "SNV supported domestic biogas programmes in Asia and Africa".
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844:
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217:
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2606: – Processes by which microorganisms break down biodegradable material in the absence of oxygen
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condition in China have led biogas to become the better eco-friendly energy for the rural areas. In
1814:
and is a much more effective displacer of carbon dioxide than the normal use in on-site CHP plants.
8502:
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Roubík, Hynek; Barrera, Sergio; Van Dung, Dinh; Phung, Le Dinh; Mazancová, Jana (10 October 2020).
4329:
2392:
2308:¢/kWh gave farmers the opportunity to become energy suppliers and gain a further source of income.
2196:, an ethanol plant considered to be one of the largest biogas facilities in North America is using
1997:
1339:
may be present. Left in the biogas stream, hydrogen sulfide is corrosive and when combusted yields
823:
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157:
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77:
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was lost (as heat). Using the grid to transport the gas to consumers, the energy can be used for
1438:
847:, performing anaerobic respiration. Biogas can refer to gas produced naturally and industrially.
655:
533:
523:
227:
162:
8362:
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4653:
4238:." State Energy Conservation Office (Texas). State of Texas, 23 April 2009. Web. 3 October 2009.
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system. Biogas can be generated through anaerobic digestion in the treatment of faecal sludge.
2036:
in the processes of organic waste treatment. This process can triple the production of biogas.
1927:
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1665:
815:
619:
428:
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4976:"Biogas as a sustainable energy source for developing countries: Opportunities and challenges"
3011:"Monitoring and Mitigation of Methane Emissions from Pressure Relief Valves of a Biogas Plant"
1988:
Biogas can be used as the fuel in the system of producing biogas from agricultural wastes and
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2709: – Activities and actions required to manage waste from its source to its final disposal
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The European Union has legislation regarding waste management and landfill sites called the
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1335:) is the most common contaminant in biogas, but other sulfur-containing compounds, such as
727:
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336:
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102:
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Surendra, K. C.; Takara, Devin; Hashimoto, Andrew G.; Khanal, Samir Kumar (1 March 2014).
8:
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In India, Nepal, Pakistan and Bangladesh biogas produced from the anaerobic digestion of
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Abatzoglou, Nicolas; Boivin, Steve (2009). "A review of biogas purification processes".
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4187:"Massachusetts companies are turning to 'anaerobic digesters' to dispose of food waste"
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2923:"How a false solution to climate change is damaging the natural world | George Monbiot"
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from the engine is conveniently used for heating the digester; cooking; space heating;
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2008:
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systems resulting in newer efficient low cost designs such as the Deenabandhu model.
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866:
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4722:"Erneuerbare Energien in Deutschland. Rückblick und Stand des Innovationsgeschehens"
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magazine, methane biogas from cow manure would be sufficient to produce 100 billion
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3470:"New Landfill Gas Treatment Technology Dramatically Lowers Energy Production Costs"
3434:
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3304:
3239:"Biogas – a sustainable energy source: new measures and possibilities for SLovenia"
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5480:"New venture selects Cargill's Tennessee site to produce Calysta FeedKind Protein"
4952:
4878:
1976:
Biogas can be used in different types of internal combustion engines, such as the
8811:
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8626:
8616:
8247:
7755:
7745:
7635:
7271:
6915:
6713:
6575:
6525:
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5925:
5904:
He, Pin Jing (2010). "Anaerobic digestion: An intriguing long history in China".
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Climate Change, United States Environmental Protection Agency, 11 December 2015.
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3049:
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2869:"Principles and potential of the anaerobic digestion of waste-activated sludge"
2437:
to further enhance the slurry produced by the biogas plant for use as compost.
2193:
2104:
2096:
2088:
2021:
2012:
1876:
1751:
is also produced as a byproduct of the denitrification process. Nitrous oxide (
1446:
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995:
991:
715:
602:
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548:
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378:
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Ashden Awards, sustainable and renewable energy in the UK and developing world
3626:"Biogas Flows Through Germany's Grid Big Time – Renewable Energy News Article"
2099:(previously 94/9/EG) are obligatory. These centrifugal fan units, for example
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5785:
5543:"Indrapratha Gas, Mahindra & Mahindra join hands to stop stubble burning"
5007:
4960:
4136:"Cow power: the energy and emissions benefits of converting manure to biogas"
3981:
3902:
3446:
3052:"The Danish national effort to minimise methane emissions from biogas plants"
2900:
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4259:
Western Plains Energy finishing up North America's largest biogas digester
3752:
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3085:
3027:
3010:
2444:
In Nepal, the government provides subsidies to build biogas plant at home.
2434:
2185:
2033:
2015:
potentials produced by biogas are 25 and 12 times higher respectively than
1993:
1989:
1911:
1788:
1645:
1289:
1063:
955:
888:
862:
553:
438:
107:
72:
4458:"Biogas and Biomethane in Europe: Lessons from Denmark, Italy and Germany"
2516:
2379:
The Deenabandhu Model is a new biogas-production model popular in India. (
2134:
provides loan financing and grant funding for biogas systems, as does the
2064:
financially and would tackle sanitation, health and environmental issues.
1947:
1781:
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2016:
2001:
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132:
5501:"Algenol and Reliance launch algae fuels demonstration project in India"
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2809:. Claverton Energy Conference Bath, UK. 24 October 2009. Archived from
2695: – Comparison of costs of different electricity generation sources
2426:
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87:
5564:"Modi govt plans Gobar-Dhan scheme to convert cattle dung into energy"
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1445:
is released and can combine with free oxygen or other elements in the
1403:) is produced from organic compounds containing nitrogen, such as the
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6294:
5737:
Chinese Village Life Today: Building Families in an Age of Transition
4017:
2624:
2523:
2397:
2000:
can also be greatly reduced when using biogas as the fuel instead of
1977:
1811:
1466:
1434:
1043:
958:
digestion which is dependent on temperature. In experimental work at
936:
856:
808:
423:
403:
172:
82:
6216:
6117:
5680:
3438:
2574:
2530:
1787:
Biogas can be used for electricity production on sewage works, in a
650:
8826:
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8796:
8533:
8262:
8252:
8242:
8227:
8202:
8046:
8031:
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7055:
7040:
6991:
6892:
6862:
6847:
6820:
6793:
6593:
6558:
6483:
6473:
6416:
6240:
2100:
1408:
1209:
1186:
800:
563:
448:
443:
97:
92:
62:
5998:"Potential, Barriers and Prospects of Biogas Production in Zambia"
3280:"Predicting methane and biogas production with the biogas package"
2024:
emission should still be considered while implicating the system.
1822:
Raw biogas produced from digestion is roughly 60% methane and 39%
906:
8473:
8463:
8430:
8405:
8400:
8267:
8232:
8051:
7947:
7889:
7841:
7619:
7599:
7469:
7334:
7204:
6975:
6965:
6500:
6494:
6443:
6325:
6302:
6204:
6082:"Generating new employment opportunities [Social Impact]"
5455:"Food made from natural gas will soon feed farm animals – and us"
2741:"NNFCC Renewable Fuels and Energy Factsheet: Anaerobic Digestion"
2668:
2630:
2588:
2221:
2216:
2115:
The United States legislates against landfill gas as it contains
2049:
1871:, which itself has to go through a cleaning process, and becomes
1744:
1561:
1551:
1495:
1442:
1388:
1294:
1140:
1000:
983:
585:
543:
279:
262:
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2233:
is a German biogas technology company operating in the field of
7740:
6970:
6882:
6546:
6478:
6394:
2478:
as a main material to generate biogas is currently developing.
2430:
2421:
2328:
2263:
announced their plans to build three grid-injecting digesters.
1499:
1450:
1336:
1256:
1008:
987:
986:(a major constituent of biogas) is ignited for its usage as an
928:
814:
After removal of carbon dioxide and hydrogen sulfide it can be
719:
707:
6060:
5369:
5166:"Dự án chương trình khí sinh học cho ngành chăn nuôi Việt Nam"
4456:
Eyl-Mazzega, Mark Antione; Mathieu, Carole (27 October 2020).
8357:
8212:
7781:
6520:
6463:
6453:
6406:
5097:
4973:
4896:. Selected papers from World Renewable Energy Congress – XI.
4009:
3945:
3325:
2867:
Appels, Lise; Baeyens, Jan; Degrève, Jan; Dewil, Raf (2008).
2475:
2471:
2103:, Meidinger AG or Witt & Sohn AG are suitable for use in
1880:
1023:
509:
6263:
6018:
4110:"Inflation Reduction Act Gives a Boost to the Biogas Sector"
2657: – Conversion of carbon monoxide and carbon dioxide (CO
1946:"Biogaståget Amanda" ("Amanda the Biogas Train") train near
1776:
895:
inside a landfill due to chemical reactions and microbes, or
6925:
6762:
6488:
6458:
5210:
5169:
5119:
Roubík, H.; Mazancová, J.; Phung, L.D.; Banout, J. (2018).
4856:
3370:
2693:
Relative cost of electricity generated by different sources
2689: – Methane enriched biogas that can easily be upgraded
2463:
1847:: inadequate for use in machinery. The corrosive nature of
1503:
1380:), also corrosive and environmentally hazardous compounds.
804:
607:
6146:
The Biogas Handbook: Science, Production and Applications.
5349:
Biogas First in Kenya for Clarke Energy and Tropical Power
4926:
4591:
4589:
4218:, 23 September 2008, natl. ed.: SPG9. Web. 1 October 2009.
3505:, Food and Agricultural Organization of the United Nations
3467:
2020:
alternative. The balance between environmental damage and
1411:. If not separated from the biogas, combustion results in
8517:
8087:
7975:
7812:
7510:
6468:
4333:
3773:
2866:
1412:
21:
6039:
5585:"Assessment of environmental impact of FeedKind protein"
4526:
4524:
3836:
Comparison of energy systems using life cycle assessment
5522:"ExxonMobil Announces Breakthrough in Renewable Energy"
5193:
4586:
3420:
3418:
3416:
3414:
3412:
2717:
Pages displaying short descriptions of redirect targets
2697:
Pages displaying short descriptions of redirect targets
2620:
Pages displaying short descriptions of redirect targets
1910:
Gas-grid injection is the injection of biogas into the
5961:
IOP Conference Series: Earth and Environmental Science
4794:
4792:
4411:
Sewage project sends first ever renewable gas to grid
4011:
Research Program on Water, Land and Ecosystems (WLE).
3129:"Biogas – Bioenergy Association of New Zealand (BANZ)"
2807:"Biomethane fueled vehicles the carbon neutral option"
2095:
units built in accordance with the European directive
1087:(VOCs) in landfill gas contribute to the formation of
6193:
4521:
3461:
1802:; and process heating. If compressed, it can replace
3409:
2570:
1971:
1520:
5954:
5852:
4789:
4673:
4671:
2799:
2612: – Oxygen needed to remove organics from water
1992:
heat and electricity in a combined heat and power (
5669:
5392:"GPS Renewables – Waste management through biogas"
4455:
2645: – Using hydrogen to decarbonize more sectors
6188:An Introduction to Biogas, University of Adelaide
4247:Trash-to-energy trend boosts anaerobic digesters
3798:
3796:
3468:Tower, P.; Wetzel, J.; Lombard, X. (March 2006).
3181:, www.adelaide.edu.au/biogas. Retrieved 22.10.07.
3009:Reinelt, Torsten; Liebetrau, Jan (January 2020).
2683: – Energy collected from renewable resources
2651: – Process of monitoring gas from landfills.
891:(LFG), which is produced by the decomposition of
25:Pipes carrying biogas (foreground) and condensate
8867:
5703:"5,360 bio-gas plants installed in 12 districts"
5695:
4746:
4714:
4668:
4356:"FNR: Fachagentur Nachwachsende Rohstoffe e. V."
3546:
3544:
3424:
3008:
1964:feeding operations (covered livestock lagoons).
6626:Bioconversion of biomass to mixed alcohol fuels
6005:Journal of Sustainable Energy & Environment
4833:"Cultivation of renewable Resources in Germany"
4134:Cuellar, Amanda D and Michael E Webber (2008).
3866:
3516:Overview of Greenhouse Gases, Methane Emissions
5955:Tembo, J.M.; Nyirenda, E.; Nyambe, I. (2017).
5809:
5647:"Biogas plants provide cooking and fertiliser"
3793:
2639: – Hydrogen that is produced biologically
839:Biogas is produced by microorganisms, such as
7797:
7164:
7150:
6778:
6279:
5995:
5362:"Renewable Energy Solutions – Living Lightly"
3541:
2966:
2027:
1724:
676:
6127:Biogas processes for sustainable development
5189:
5187:
5043:
4322:
3236:
1905:
1863:Methane in biogas can be concentrated via a
1076:is 5% methane and the upper is 15% methane.
758:. The gas composition is primarily methane (
16:Gases produced by decomposing organic matter
7584:Hydrogen internal combustion engine vehicle
4761:(3). Engineering in Life Science: 302–309.
4227:State Energy Conservation Office (Texas). "
3472:. Applied Filter Technology. Archived from
2950:"Cold climates no bar to biogas production"
2941:
2823:
2125:Title 40 of the Code of Federal Regulations
1860:alone is enough to destroy the mechanisms.
702:source produced from raw materials such as
7804:
7790:
7157:
7143:
6785:
6771:
6286:
6272:
5996:Shane, Agabu; Gheewala, Shabbir H (2020).
5764:Biogas in China. Retrieved 27 October 2016
4432:"Ecotricity announces third Green Gasmill"
3814:State Energy Conservation Office (Texas).
3805:, U.S. Department of Energy, 13 April 2010
2627: – Renewable energy made from biomass
1806:for use in vehicles, where it can fuel an
1731:
1717:
1689:Nuclear power proposed as renewable energy
683:
669:
44:
6631:Bioenergy with carbon capture and storage
5980:
5784:
5617:"GPS Renewables – Monitoring Methodology"
5184:
4852:
4850:
4816:
4560:
4169:
4159:
4016:
3971:
3892:
3867:Whiting, Andrew; Azapagic, Adisa (2014).
3678:"Adding gas from biomass to the gas grid"
3550:
3400:
3355:
3075:
3026:
2873:Progress in Energy and Combustion Science
2618: – Decomposition by living organisms
1922:two-thirds of all the energy produced by
1039:. A facility may leak 2% of the methane.
978:produced by biogas is similar to that of
8208:Cabriolet / Convertible / Drophead coupe
6123:
5855:Renewable and Sustainable Energy Reviews
5812:Renewable and Sustainable Energy Reviews
5730:
5728:
4980:Renewable and Sustainable Energy Reviews
4825:
4614:
2956:. London: Sunita Harrington. p. 14.
2671:(municipal solid waste and landfill gas)
2327:
2215:
2136:Environmental Quality Incentives Program
2039:
1955:1974, a British documentary film titled
1941:
1775:
1449:. Deposits are formed containing mostly
905:
20:
8554:Homogeneous charge compression ignition
6107:Updated Guidebook on Biogas Development
4891:
4798:
4752:
4677:
4271:
4212:Electricity From What Cows Leave Behind
4083:
3730:Friendly fuel trains (30 October 2005)
3237:Obrecht, Matevz; Denac, Matjaz (2011).
2976:Journal of Chemical Health & Safety
2715: – European bioenergy organization
2517:https://www.worldbiogasassociation.org/
2474:Province, the technology of using crop
2332:Simple sketch of household biogas plant
2319:
2184:, cow manure is being used to power an
8868:
5734:
5331:SNV Tanzania Domestic Biogas Programme
4847:
4680:Applied Biochemistry and Biotechnology
4622:"Biomass for Power Generation and CHP"
4399:The Official Information Portal on AD
4306:. German Energy Agency. Archived from
4060:"Basic Information about Landfill Gas"
4057:
3277:
3222:: CS1 maint: archived copy as title (
3172:Safety Page, Beginners Guide to Biogas
2546:
2149:
1937:
178:List of low-energy building techniques
7785:
7138:
6766:
6267:
5725:
4184:
3952:Resources, Conservation and Recycling
3825:, 23 April 2009. Web. 3 October 2009.
3427:Biofuels, Bioproducts and Biorefining
3268:, www.kolumbus.fi. Retrieved 2.11.07.
3015:Chemical Engineering & Technology
2947:
2752:
6699:Cellulosic ethanol commercialization
6144:Woodhead Publishing Series. (2013).
3496:"Increased Greenhouse Gas Emissions"
2960:
2358:Netherlands Development Organisation
2198:integrated manure utilization system
898:As digested gas, produced inside an
6161:" (PDF). Retrieved 19 October 2022.
6086:SIOR. Social Impact Open Repository
5452:
5261:Indonesia Domestic Biogas Programme
3921:SIOR. Social Impact Open Repository
3745:"Bates Car – Sweet As a Nut (1975)"
1817:
1313:
13:
6157:Lazenby, Ruthie (15 August 2022).
6100:
5903:
5774:
5709:. 27 December 2014. Archived from
4272:McKenna, Phil (13 November 2019).
4185:Moran, Barbara (9 November 2022).
4084:Lazenby, Ruthie (15 August 2022).
3816:"Biomass Energy: Manure for Fuel."
3670:
3131:. Bioenergy.org.nz. Archived from
2524:https://americanbiogascouncil.org/
2154:
910:Biogas production in rural Germany
14:
8942:
8218:Coupé de Ville / Sedanca de Ville
7391:Electric motorcycles and scooters
6165:
5779:. Paris, France: Atlantis Press.
5098:"Biogas Sector Partnership-Nepal"
4799:Kanning, H.; et al. (2009).
4597:"Biogas Segments Statistics 2010"
2948:Gupta, Sujata (3 November 2010).
2531:https://www.biogasassociation.ca/
2482:households use biogas digesters.
2259:In 2015 the Green-Energy company
2132:Rural Energy for American Program
2072:
1972:Biogas generated heat/electricity
1521:Benefits of manure derived biogas
998:( as described by this equation:
914:
7004:
6747:
6746:
6251:
6239:
6227:
6215:
6203:
6074:
6053:
6032:
6011:
5989:
5948:
5897:
5846:
5803:
5768:
5757:
5639:
5609:
5577:
5556:
5535:
5514:
5493:
5472:
5446:
3652:"energy loss, transmission loss"
2826:European Journal of Soil Biology
2587:
2573:
2140:Conservation Stewardship Program
2110:
1867:to the same standards as fossil
1540:
994:is made as a product which is a
945:
782:) and may have small amounts of
649:
636:
635:
113:Energy efficiency implementation
7438:Plug-in hybrid electric vehicle
5414:
5384:
5354:
5342:
5324:
5298:
5272:
5254:
5225:
5209:. Biogaslao.org. Archived from
5199:
5168:. Biogas.org.vn. Archived from
5158:
5112:
5090:
5064:
5014:
4967:
4920:
4885:
4646:
4502:
4489:AuCo Solutions biogas software
4483:
4479:Installed biogas power in Italy
4471:
4449:
4424:
4405:
4393:
4372:
4348:
4296:
4265:
4253:
4241:
4229:Biomass Energy: Manure for Fuel
4221:
4204:
4178:
4127:
4102:
4077:
4051:
4025:
4003:
3988:
3973:10.1016/j.resconrec.2015.09.001
3939:
3909:
3860:
3828:
3808:
3774:National Film Board of Canada.
3767:
3737:
3724:
3706:
3644:
3628:. 14 March 2012. Archived from
3618:
3600:
3571:
3532:
3523:
3508:
3489:
3364:
3319:
3293:
3271:
3252:
3230:
3184:
3165:
3147:
3121:
3100:
3043:
3002:
2967:Hedlund, FH; Madsen, M (2018).
2633: – Type of biological fuel
2509:
2205:Southern California Gas Company
1771:
1700:Topics by country and territory
1433:In some cases, biogas contains
1308:
1057:
369:Ocean thermal energy conversion
8906:Biodegradable waste management
8855:Template:EC car classification
7811:
7320:Battery electric multiple unit
5741:University of Washington Press
5308:. Snvworld.org. Archived from
5282:. Snvworld.org. Archived from
4304:"Renewables - Made in Germany"
3838:. World Energy Council. 2004.
2915:
2860:
2817:
2777:
2746:
2737:National Non-Food Crops Centre
2730:
2067:
1112:
962:, a 1000-litre digester using
960:University of Alaska Fairbanks
923:is the name often given to an
1:
7421:Neighborhood Electric Vehicle
6831:Underground coal gasification
6293:
6019:"European Biogas Association"
5982:10.1088/1755-1315/60/1/012025
4953:10.1016/j.jclepro.2020.122257
4933:Journal of Cleaner Production
4879:10.1016/j.jclepro.2015.09.114
4859:Journal of Cleaner Production
4805:Raumforschung und Raumordnung
4380:"European Biogas Association"
4058:US EPA, OAR (15 April 2016).
2846:10.1016/S1164-5563(01)01067-6
2723:
2529:Canadian Biogas Association (
1920:micro combined heat and power
1918:). Until the breakthrough of
1119:Typical composition of biogas
950:There are two key processes:
872:
834:
198:Passive solar building design
7710:Who Killed the Electric Car?
7506:Common ethanol fuel mixtures
6792:
6178:Biogas Portal on Energypedia
5926:10.1016/j.wasman.2010.01.002
5145:10.1016/j.renene.2017.08.068
4914:10.1016/j.renene.2012.01.058
4755:Engineering in Life Sciences
4727:. IfnE et al. Archived from
4477:ANSA Ambiente & Energia
4161:10.1088/1748-9326/3/3/034002
4035:. Alfagy.com. Archived from
3894:10.1016/j.energy.2014.03.103
3776:"Bate's Car: Sweet as a Nut"
3393:10.1016/0961-9534(91)90028-B
3348:10.1016/0961-9534(94)90067-1
3246:Journal of Energy Technology
3077:10.1016/j.wasman.2022.12.035
2713:European Biomass Association
2551:In the 1985 Australian film
2298:Renewable Energy Sources Act
1891:must be removed if present.
1428:
1094:
7:
7724:Revenge of the Electric Car
7315:Battery-electric locomotive
6729:Issues relating to biofuels
6719:Energy return on investment
6173:European Biogas Association
6040:"German Biogas Association"
4532:"European Biogas Barometer"
3259:Basic Information on Biogas
2988:10.1016/j.jchas.2018.05.004
2677: – Gaseous fossil fuel
2566:
2536:European Biogas Association
2433:Digester. Some designs use
1705:Marketing and policy trends
1437:. They are formed from the
656:Renewable energy portal
374:Renewable energy transition
10:
8947:
8544:Gasoline / petrol
8308:Roadster / Spider / Spyder
5875:10.1016/j.rser.2009.07.019
5832:10.1016/j.rser.2014.04.031
5366:Renewable Energy Solutions
5351:Accessed 11 September 2013
5000:10.1016/j.rser.2013.12.015
4654:"Renewable Energy Sources"
2893:10.1016/j.pecs.2008.06.002
2554:Mad Max Beyond Thunderdome
2515:World Biogas Association (
2275:
2220:Biogas fueling station in
2028:Technological advancements
1808:internal combustion engine
1383:
1085:volatile organic compounds
1061:
969:
876:
854:
850:
8840:
8764:
8684:(engine / drive)
8678:
8650:
8597:
8449:
8371:
8163:
8101:
8060:
8007:
7974:
7946:
7918:
7880:
7829:
7820:
7733:
7717:What Is the Electric Car?
7701:
7628:
7592:
7564:Hydrogen-powered aircraft
7544:
7468:
7300:
7270:
7213:
7190:
7172:
7166:Alternative fuel vehicles
7069:
7013:
7002:
6984:
6956:
6901:
6807:
6800:
6742:
6704:Energy content of biofuel
6686:
6618:
6534:
6425:
6301:
4515:25 September 2018 at the
4496:25 September 2018 at the
3718:29 September 2011 at the
2743:, Retrieved on 2011-02-16
2610:Biochemical oxygen demand
2542:Indian Biogas Association
2539:German Biogas Association
2522:American Biogas Council (
2489:
2211:
2144:Conservation Loan Program
1906:Biogas gas-grid injection
1303:volatile suspended solids
1278:
1134:
1100:Biochemical oxygen demand
1081:effects of global warming
845:sulfate-reducing bacteria
218:Sustainable refurbishment
8323:Sedan delivery/Panel van
7426:Plug-in electric vehicle
7406:Gyro flywheel locomotive
7384:Battery electric vehicle
6678:Thermal depolymerization
6651:Industrial biotechnology
5786:10.2991/meic-15.2015.260
5735:Santos, Gonçalo (2021).
4692:10.1385/abab:109:1-3:263
4602:. Fachverband Biogas e.V
4491:Biogas software solution
3997:Kaisei Publishing, Tokyo
3612:29 November 2014 at the
3177:17 February 2015 at the
2447:
2393:Methylococcus capsulatus
2370:
2266:
1998:global warming potential
1318:Toxic and foul smelling
1031:). The content of toxic
734:. Biogas is produced by
203:Sustainable architecture
158:Glass in green buildings
148:Environmental technology
78:Compact fluorescent lamp
8584:Liquified petroleum gas
8396:Driverless (autonomous)
7646:Hybrid electric vehicle
7610:Liquid nitrogen vehicle
7605:Hybrid electric vehicle
7411:Hybrid electric vehicle
7374:Electric platform truck
6646:Fischer–Tropsch process
6636:Biomass heating systems
6183:American Biogas Council
5973:2017E&ES...60a2025T
5422:"BioProtein Production"
4418:9 December 2010 at the
4234:23 October 2012 at the
4114:The National Law Review
3821:23 October 2012 at the
3501:17 January 2016 at the
2755:"How does biogas work?"
2649:Landfill gas monitoring
2581:Renewable energy portal
2286:nachwachsende Rohstoffe
1834:with trace elements of
1439:anaerobic decomposition
524:Human-powered transport
228:Tropical green building
163:Green building and wood
8901:Biotechnology products
8489:Compressed natural gas
8416:Personal rapid transit
7771:Zero-emissions vehicle
7287:Compressed-air vehicle
7228:Solar-powered aircraft
7046:Natural-gas processing
6124:Marchaim, Uri (1992).
4775:10.1002/elsc.200620128
3713:Biogas train in Sweden
3278:Hafner, Sasha (2017).
3264:6 January 2010 at the
3159:3 January 2009 at the
3028:10.1002/ceat.201900180
2785:"Biogas & Engines"
2333:
2225:
1951:
1804:compressed natural gas
1784:
1666:Tidal stream generator
911:
770:) and carbon dioxide (
620:Personal rapid transit
362:Tidal stream generator
223:Thermal energy storage
143:Environmental planning
26:
8755:Dual motor-four-wheel
8353:Town (Coupé de Ville)
7641:Flexible-fuel vehicle
7569:Hydrogen-powered ship
7521:Flexible-fuel vehicle
7396:Electric kick scooter
6808:Manufactured fuel gas
6061:"Biogas-india – Home"
5677:"PAK-ENERGY SOLUTION"
4865:(Part 4): 2784–2792.
4627:. IEA. Archived from
4570:. BMU. Archived from
4510:Biogas Plant in Italy
3373:Biomass and Bioenergy
3328:Biomass and Bioenergy
2687:Renewable natural gas
2331:
2244:
2219:
2040:Biogas and Sanitation
1945:
1779:
1281:www.kolumbus.fi, 2007
1135:Percentage by volume
909:
464:Sustainable transport
409:Floating wind turbine
238:Zero heating building
153:Fossil fuel phase-out
24:
8766:Engine configuration
7766:Wind-powered vehicle
7350:Battery electric bus
6092:on 5 September 2017.
5657:on 27 September 2011
5336:28 July 2011 at the
5266:28 July 2011 at the
5194:http://www.idcol.org
4436:www.ecotricity.co.uk
3658:on 22 September 2018
2343:indoor air pollution
2320:Developing countries
2162:Science and Children
2119:. The United States
1626:Marine current power
1572:Crosswind kite power
933:biodegradable wastes
807:; it can be used in
598:Personal transporter
493:Wind-powered vehicle
337:Marine current power
243:Zero-energy building
103:Efficient energy use
8876:Anaerobic digestion
8772:internal combustion
8574:Internal combustion
8381:All-terrain vehicle
8303:Retractable hardtop
7615:Natural gas vehicle
7051:Natural gas storage
6734:Sustainable biofuel
5918:2010WaMan..30..549H
5867:2010RSERv..14..545C
5824:2014RSERv..35..294D
5213:on 10 November 2010
5137:2018REne..115..362R
5078:on 27 February 2012
4992:2014RSERv..31..846S
4945:2020JCPro.27022257R
4906:2013REne...49...90G
4871:2016JCPro.112.2784R
4767:2006EngLS...6..302W
4336:on 28 November 2014
4284:on 16 November 2019
4152:2008ERL.....3c4002C
3964:2015RCR...104..109S
3927:on 5 September 2017
3885:2014Ene....70..181W
3385:1991BmBe....1...65R
3340:1994BmBe....6..275R
3204:on 12 November 2018
3154:LFG energy projects
3068:2023WaMan.157..321M
2885:2008PECS...34..755A
2838:2001EJSB...37...25L
2787:. clarke-energy.com
2753:Webdesign, Insyde.
2604:Anaerobic digestion
2547:Society and culture
2203:In California, the
2150:Global developments
2054:anaerobic digestion
1938:Biogas in transport
1924:biogas power plants
1766:anaerobic digestion
1656:Sustainable biofuel
1567:Carbon-neutral fuel
1528:Part of a series on
1121:
893:biodegradable waste
879:Anaerobic digestion
818:in the same way as
740:anaerobic organisms
736:anaerobic digestion
285:Carbon-neutral fuel
213:Sustainable habitat
68:Building insulation
56:Energy conservation
32:Part of a series on
8926:Sustainable energy
7282:Compressed-air car
7248:List of prototypes
7061:Pipeline transport
7021:Compressor station
5453:Le Page, Michael.
5306:"Renewable energy"
5280:"Renewable Energy"
5196:(click 'Projects')
5172:on 25 October 2004
5072:"Renewable energy"
4818:10.1007/BF03185702
4656:. 6 September 2014
4634:on 3 November 2011
4574:on 29 January 2015
4401:'Biogas Plant Map'
4278:InsideClimate News
4216:The New York Times
4140:Environ. Res. Lett
3694:on 20 October 2017
3685:Swedish Gas Center
3588:on 4 December 2014
3135:on 25 January 2010
2702:Thermal hydrolysis
2334:
2235:renewable energies
2226:
2079:Landfill Directive
1952:
1928:on-site generation
1896:amine gas treating
1785:
1582:Geothermal heating
1494:) and can contain
1117:
1089:photochemical smog
925:anaerobic digester
912:
900:anaerobic digester
822:and used to power
748:anaerobic digester
704:agricultural waste
300:Geothermal heating
128:Energy saving lamp
38:Sustainable energy
27:
8891:Biogas technology
8863:
8862:
8159:
8158:
7928:Compact executive
7779:
7778:
7688:Electric aircraft
7554:Fuel cell vehicle
7401:Fuel cell vehicle
7325:Electric aircraft
7257:Electric aircraft
7182:Fuel cell vehicle
7132:
7131:
7000:
6999:
6843:Blast furnace gas
6826:Coal gasification
6760:
6759:
6673:Sabatier reaction
6137:978-92-5-103126-1
6007:. 6 (2015) 21-27.
5750:978-0-295-74738-5
5707:Business Recorder
5312:on 3 January 2015
5286:on 3 January 2015
5242:on 6 October 2018
5100:. Bspnepal.org.np
5031:on 5 October 2018
3732:New Straits Times
3476:on 2 January 2016
3108:"Biogas Problems"
2413:(GHG) emissions.
1782:Linköping, Sweden
1741:
1740:
1577:Geothermal energy
1286:
1285:
867:Methane emissions
693:
692:
290:Geothermal energy
8938:
8931:Waste management
8921:Renewable energy
8775:
8734:Front-four-wheel
8685:
8548:direct injection
8459:Alternative fuel
8273:Multi-stop truck
7827:
7826:
7806:
7799:
7792:
7783:
7782:
7579:Hydrogen vehicle
7559:Hydrogen economy
7526:Methanol economy
7379:Electric vehicle
7330:Electric bicycle
7302:Electric battery
7200:Electric bicycle
7159:
7152:
7145:
7136:
7135:
7008:
6805:
6804:
6787:
6780:
6773:
6764:
6763:
6750:
6749:
6594:Pongamia pinnata
6288:
6281:
6274:
6265:
6264:
6256:
6255:
6254:
6244:
6243:
6232:
6231:
6230:
6222:Renewable energy
6220:
6219:
6208:
6207:
6199:
6141:
6094:
6093:
6088:. Archived from
6078:
6072:
6071:
6069:
6067:
6057:
6051:
6050:
6048:
6046:
6036:
6030:
6029:
6027:
6025:
6015:
6009:
6008:
6002:
5993:
5987:
5986:
5984:
5952:
5946:
5945:
5906:Waste Management
5901:
5895:
5894:
5850:
5844:
5843:
5807:
5801:
5800:
5788:
5772:
5766:
5761:
5755:
5754:
5732:
5723:
5722:
5720:
5718:
5699:
5693:
5692:
5690:
5688:
5679:. Archived from
5673:
5667:
5666:
5664:
5662:
5653:. Archived from
5643:
5637:
5636:
5634:
5632:
5623:. Archived from
5613:
5607:
5606:
5604:
5602:
5597:on 2 August 2019
5596:
5590:. Archived from
5589:
5581:
5575:
5574:
5572:
5570:
5560:
5554:
5553:
5551:
5549:
5539:
5533:
5532:
5530:
5528:
5518:
5512:
5511:
5509:
5507:
5497:
5491:
5490:
5488:
5486:
5476:
5470:
5469:
5467:
5465:
5450:
5444:
5443:
5441:
5439:
5433:
5427:. Archived from
5426:
5418:
5412:
5411:
5409:
5407:
5398:. Archived from
5388:
5382:
5381:
5379:
5377:
5368:. Archived from
5358:
5352:
5346:
5340:
5328:
5322:
5321:
5319:
5317:
5302:
5296:
5295:
5293:
5291:
5276:
5270:
5258:
5252:
5251:
5249:
5247:
5241:
5235:. Archived from
5229:
5223:
5222:
5220:
5218:
5203:
5197:
5191:
5182:
5181:
5179:
5177:
5162:
5156:
5155:
5153:
5151:
5131:(115): 362–370.
5125:Renewable Energy
5116:
5110:
5109:
5107:
5105:
5094:
5088:
5087:
5085:
5083:
5074:. Archived from
5068:
5062:
5061:
5059:
5057:
5051:"China – Biogas"
5047:
5041:
5040:
5038:
5036:
5030:
5024:. Archived from
5018:
5012:
5011:
4971:
4965:
4964:
4924:
4918:
4917:
4894:Renewable Energy
4889:
4883:
4882:
4854:
4845:
4844:
4842:
4840:
4829:
4823:
4822:
4820:
4796:
4787:
4786:
4750:
4744:
4743:
4741:
4739:
4733:
4726:
4718:
4712:
4711:
4686:(1–3): 263–274.
4675:
4666:
4665:
4663:
4661:
4650:
4644:
4643:
4641:
4639:
4633:
4626:
4618:
4612:
4611:
4609:
4607:
4601:
4593:
4584:
4583:
4581:
4579:
4564:
4558:
4557:
4555:
4553:
4548:on 25 April 2012
4547:
4541:. Archived from
4536:
4528:
4519:
4508:Snam IES Biogas
4506:
4500:
4487:
4481:
4475:
4469:
4468:
4465:Études de l'Ifri
4462:
4453:
4447:
4446:
4444:
4442:
4428:
4422:
4409:
4403:
4397:
4391:
4390:
4388:
4386:
4376:
4370:
4369:
4367:
4365:
4360:
4352:
4346:
4345:
4343:
4341:
4332:. Archived from
4326:
4320:
4319:
4317:
4315:
4300:
4294:
4293:
4291:
4289:
4280:. Archived from
4269:
4263:
4257:
4251:
4245:
4239:
4225:
4219:
4210:Zezima, Katie. "
4208:
4202:
4201:
4199:
4197:
4182:
4176:
4175:
4173:
4163:
4131:
4125:
4124:
4122:
4120:
4106:
4100:
4099:
4097:
4095:
4090:
4081:
4075:
4074:
4072:
4070:
4055:
4049:
4048:
4046:
4044:
4029:
4023:
4022:
4020:
4018:10.5337/2016.206
4007:
4001:
4000:
3992:
3986:
3985:
3975:
3943:
3937:
3936:
3934:
3932:
3923:. Archived from
3913:
3907:
3906:
3896:
3864:
3858:
3857:
3832:
3826:
3812:
3806:
3800:
3791:
3790:
3788:
3786:
3771:
3765:
3764:
3762:
3760:
3751:. Archived from
3741:
3735:
3728:
3722:
3710:
3704:
3703:
3701:
3699:
3693:
3687:. Archived from
3682:
3674:
3668:
3667:
3665:
3663:
3654:. Archived from
3648:
3642:
3641:
3639:
3637:
3632:on 14 March 2012
3622:
3616:
3604:
3598:
3597:
3595:
3593:
3587:
3581:. Archived from
3575:
3569:
3568:
3566:
3564:
3559:on 30 April 2015
3555:. Archived from
3548:
3539:
3536:
3530:
3527:
3521:
3512:
3506:
3493:
3487:
3485:
3483:
3481:
3465:
3459:
3458:
3422:
3407:
3406:
3404:
3368:
3362:
3361:
3359:
3323:
3317:
3316:
3314:
3312:
3307:on 30 April 2015
3303:. Archived from
3297:
3291:
3290:
3284:
3275:
3269:
3256:
3250:
3249:
3243:
3234:
3228:
3227:
3221:
3213:
3211:
3209:
3203:
3197:. Archived from
3196:
3188:
3182:
3169:
3163:
3151:
3145:
3144:
3142:
3140:
3125:
3119:
3118:
3116:
3114:
3104:
3098:
3097:
3079:
3056:Waste Management
3047:
3041:
3040:
3030:
3006:
3000:
2999:
2973:
2964:
2958:
2957:
2945:
2939:
2938:
2936:
2934:
2919:
2913:
2912:
2864:
2858:
2857:
2821:
2815:
2814:
2803:
2797:
2796:
2794:
2792:
2781:
2775:
2774:
2772:
2770:
2761:. Archived from
2750:
2744:
2734:
2718:
2707:Waste management
2698:
2681:Renewable energy
2661:) to methane (CH
2643:Hydrogen economy
2621:
2616:Biodegradability
2597:
2592:
2591:
2583:
2578:
2577:
2341:energy, reduces
2307:
2254:sewage treatment
2175:Sheldon, Vermont
1916:natural gas grid
1885:hydrogen sulfide
1859:
1857:
1856:
1846:
1844:
1843:
1833:
1832:
1831:
1818:Biogas upgrading
1780:A biogas bus in
1763:
1761:
1760:
1733:
1726:
1719:
1597:Run-of-the-river
1592:Hydroelectricity
1587:Geothermal power
1544:
1534:Renewable energy
1525:
1524:
1493:
1492:
1491:
1481:
1480:
1464:
1463:
1462:
1423:
1422:
1421:
1402:
1401:
1400:
1379:
1378:
1377:
1369:
1368:
1354:
1353:
1352:
1334:
1332:
1331:
1320:Hydrogen sulfide
1314:Sulfur compounds
1271:
1270:
1269:
1248:
1246:
1245:
1233:Hydrogen sulfide
1224:
1223:
1222:
1201:
1200:
1199:
1178:
1177:
1176:
1155:
1154:
1153:
1122:
1116:
1033:hydrogen sulfide
1030:
1006:
828:energy subsidies
799:), moisture and
798:
796:
795:
784:hydrogen sulfide
781:
780:
779:
769:
768:
767:
700:renewable energy
685:
678:
671:
658:
654:
653:
644:
639:
638:
476:Electric vehicle
325:Run-of-the-river
310:Hydroelectricity
295:Geothermal power
256:Renewable energy
208:Sustainable city
183:Low-energy house
123:Energy recycling
48:
29:
28:
8946:
8945:
8941:
8940:
8939:
8937:
8936:
8935:
8866:
8865:
8864:
8859:
8836:
8807:Single-cylinder
8769:
8768:
8760:
8748:Rear-four-wheel
8699:Front mid-front
8683:
8682:
8674:
8652:Engine position
8646:
8593:
8579:Liquid nitrogen
8445:
8373:
8367:
8155:
8097:
8056:
8003:
7989:Crossover (CUV)
7970:
7942:
7914:
7876:
7816:
7810:
7780:
7775:
7756:Wave power ship
7746:Ram air turbine
7729:
7697:
7636:Bi-fuel vehicle
7624:
7588:
7540:
7464:
7304:
7296:
7273:
7272:Compressed-air
7266:
7209:
7186:
7168:
7163:
7133:
7128:
7065:
7009:
6996:
6980:
6952:
6897:
6809:
6796:
6791:
6761:
6756:
6738:
6714:Energy forestry
6682:
6614:
6576:Jatropha curcas
6537:
6530:
6438:Camelina sativa
6428:
6421:
6297:
6292:
6262:
6252:
6250:
6238:
6228:
6226:
6214:
6202:
6194:
6192:
6168:
6138:
6103:
6101:Further reading
6098:
6097:
6080:
6079:
6075:
6065:
6063:
6059:
6058:
6054:
6044:
6042:
6038:
6037:
6033:
6023:
6021:
6017:
6016:
6012:
6000:
5994:
5990:
5953:
5949:
5902:
5898:
5851:
5847:
5808:
5804:
5797:
5773:
5769:
5762:
5758:
5751:
5733:
5726:
5716:
5714:
5713:on 2 April 2015
5701:
5700:
5696:
5686:
5684:
5675:
5674:
5670:
5660:
5658:
5645:
5644:
5640:
5630:
5628:
5615:
5614:
5610:
5600:
5598:
5594:
5587:
5583:
5582:
5578:
5568:
5566:
5562:
5561:
5557:
5547:
5545:
5541:
5540:
5536:
5526:
5524:
5520:
5519:
5515:
5505:
5503:
5499:
5498:
5494:
5484:
5482:
5478:
5477:
5473:
5463:
5461:
5451:
5447:
5437:
5435:
5431:
5424:
5420:
5419:
5415:
5405:
5403:
5390:
5389:
5385:
5375:
5373:
5360:
5359:
5355:
5347:
5343:
5338:Wayback Machine
5329:
5325:
5315:
5313:
5304:
5303:
5299:
5289:
5287:
5278:
5277:
5273:
5268:Wayback Machine
5259:
5255:
5245:
5243:
5239:
5231:
5230:
5226:
5216:
5214:
5205:
5204:
5200:
5192:
5185:
5175:
5173:
5164:
5163:
5159:
5149:
5147:
5117:
5113:
5103:
5101:
5096:
5095:
5091:
5081:
5079:
5070:
5069:
5065:
5055:
5053:
5049:
5048:
5044:
5034:
5032:
5028:
5020:
5019:
5015:
4972:
4968:
4925:
4921:
4890:
4886:
4855:
4848:
4838:
4836:
4831:
4830:
4826:
4797:
4790:
4751:
4747:
4737:
4735:
4734:on 6 April 2012
4731:
4724:
4720:
4719:
4715:
4676:
4669:
4659:
4657:
4652:
4651:
4647:
4637:
4635:
4631:
4624:
4620:
4619:
4615:
4605:
4603:
4599:
4595:
4594:
4587:
4577:
4575:
4566:
4565:
4561:
4551:
4549:
4545:
4534:
4530:
4529:
4522:
4517:Wayback Machine
4507:
4503:
4498:Wayback Machine
4488:
4484:
4476:
4472:
4460:
4454:
4450:
4440:
4438:
4430:
4429:
4425:
4420:Wayback Machine
4410:
4406:
4398:
4394:
4384:
4382:
4378:
4377:
4373:
4363:
4361:
4358:
4354:
4353:
4349:
4339:
4337:
4328:
4327:
4323:
4313:
4311:
4302:
4301:
4297:
4287:
4285:
4270:
4266:
4258:
4254:
4246:
4242:
4236:Wayback Machine
4226:
4222:
4209:
4205:
4195:
4193:
4183:
4179:
4132:
4128:
4118:
4116:
4108:
4107:
4103:
4093:
4091:
4088:
4082:
4078:
4068:
4066:
4056:
4052:
4042:
4040:
4031:
4030:
4026:
4008:
4004:
3993:
3989:
3944:
3940:
3930:
3928:
3915:
3914:
3910:
3865:
3861:
3846:
3834:
3833:
3829:
3823:Wayback Machine
3813:
3809:
3803:What is biogas?
3801:
3794:
3784:
3782:
3772:
3768:
3758:
3756:
3755:on 23 July 2013
3743:
3742:
3738:
3729:
3725:
3720:Wayback Machine
3711:
3707:
3697:
3695:
3691:
3680:
3676:
3675:
3671:
3661:
3659:
3650:
3649:
3645:
3635:
3633:
3624:
3623:
3619:
3614:Wayback Machine
3605:
3601:
3591:
3589:
3585:
3579:"Nyheter – SGC"
3577:
3576:
3572:
3562:
3560:
3551:Administrator.
3549:
3542:
3537:
3533:
3528:
3524:
3513:
3509:
3503:Wayback Machine
3494:
3490:
3479:
3477:
3466:
3462:
3439:10.1002/bbb.117
3423:
3410:
3369:
3365:
3324:
3320:
3310:
3308:
3299:
3298:
3294:
3282:
3276:
3272:
3266:Wayback Machine
3257:
3253:
3241:
3235:
3231:
3215:
3214:
3207:
3205:
3201:
3194:
3192:"Archived copy"
3190:
3189:
3185:
3179:Wayback Machine
3170:
3166:
3161:Wayback Machine
3152:
3148:
3138:
3136:
3127:
3126:
3122:
3112:
3110:
3106:
3105:
3101:
3048:
3044:
3007:
3003:
2971:
2965:
2961:
2946:
2942:
2932:
2930:
2929:. 14 March 2014
2921:
2920:
2916:
2865:
2861:
2822:
2818:
2813:on 31 May 2023.
2805:
2804:
2800:
2790:
2788:
2783:
2782:
2778:
2768:
2766:
2751:
2747:
2735:
2731:
2726:
2721:
2716:
2696:
2664:
2660:
2619:
2593:
2586:
2579:
2572:
2569:
2549:
2512:
2492:
2450:
2411:green house gas
2373:
2322:
2305:
2278:
2269:
2247:
2214:
2182:Hereford, Texas
2157:
2152:
2113:
2075:
2070:
2042:
2030:
2022:green house gas
1974:
1950:station, Sweden
1940:
1908:
1865:biogas upgrader
1855:
1852:
1851:
1850:
1848:
1842:
1839:
1838:
1837:
1835:
1830:
1827:
1826:
1825:
1823:
1820:
1774:
1759:
1756:
1755:
1754:
1752:
1743:High levels of
1737:
1523:
1490:
1485:
1484:
1483:
1479:
1474:
1473:
1472:
1470:
1461:
1458:
1457:
1456:
1454:
1431:
1420:
1417:
1416:
1415:
1413:
1399:
1396:
1395:
1394:
1392:
1386:
1376:
1373:
1372:
1371:
1367:
1364:
1363:
1362:
1360:
1351:
1348:
1347:
1346:
1344:
1330:
1327:
1326:
1325:
1323:
1316:
1311:
1298:of dry biogas.
1268:
1265:
1264:
1263:
1261:
1244:
1241:
1240:
1239:
1237:
1221:
1218:
1217:
1216:
1214:
1198:
1195:
1194:
1193:
1191:
1175:
1172:
1171:
1170:
1168:
1152:
1149:
1148:
1147:
1145:
1115:
1097:
1083:. In addition,
1074:explosive limit
1066:
1060:
1054:
1027:
1022:
1019:
1012:
1004:
999:
972:
948:
917:
881:
875:
859:
853:
837:
794:
791:
790:
789:
787:
778:
775:
774:
773:
771:
766:
763:
762:
761:
759:
712:municipal waste
689:
648:
647:
634:
627:
626:
466:
456:
455:
258:
248:
247:
233:Waste-to-energy
188:Microgeneration
118:Energy recovery
58:
17:
12:
11:
5:
8944:
8934:
8933:
8928:
8923:
8918:
8913:
8908:
8903:
8898:
8893:
8888:
8886:Biodegradation
8883:
8878:
8861:
8860:
8858:
8857:
8852:
8847:
8841:
8838:
8837:
8835:
8834:
8829:
8824:
8819:
8814:
8809:
8804:
8799:
8794:
8789:
8784:
8778:
8776:
8762:
8761:
8759:
8758:
8751:
8744:
8741:Mid-four-wheel
8737:
8730:
8723:
8716:
8709:
8702:
8695:
8688:
8686:
8676:
8675:
8673:
8672:
8667:
8662:
8656:
8654:
8648:
8647:
8645:
8644:
8639:
8634:
8629:
8624:
8619:
8614:
8609:
8603:
8601:
8595:
8594:
8592:
8591:
8586:
8581:
8576:
8571:
8566:
8556:
8551:
8541:
8536:
8531:
8526:
8521:
8511:
8505:
8496:
8491:
8486:
8481:
8476:
8471:
8466:
8461:
8455:
8453:
8447:
8446:
8444:
8443:
8438:
8433:
8428:
8423:
8418:
8413:
8408:
8403:
8398:
8393:
8388:
8383:
8377:
8375:
8369:
8368:
8366:
8365:
8360:
8355:
8350:
8345:
8340:
8335:
8330:
8328:Shooting brake
8325:
8320:
8318:Saloon / Sedan
8315:
8310:
8305:
8300:
8295:
8290:
8285:
8280:
8275:
8270:
8265:
8260:
8255:
8250:
8245:
8240:
8235:
8230:
8225:
8220:
8215:
8210:
8205:
8200:
8195:
8190:
8185:
8180:
8175:
8169:
8167:
8161:
8160:
8157:
8156:
8154:
8153:
8148:
8143:
8138:
8133:
8128:
8123:
8118:
8113:
8107:
8105:
8099:
8098:
8096:
8095:
8090:
8085:
8080:
8075:
8070:
8064:
8062:
8058:
8057:
8055:
8054:
8049:
8044:
8039:
8034:
8029:
8024:
8019:
8013:
8011:
8005:
8004:
8002:
8001:
7996:
7991:
7986:
7980:
7978:
7972:
7971:
7969:
7968:
7963:
7958:
7952:
7950:
7944:
7943:
7941:
7940:
7935:
7930:
7924:
7922:
7916:
7915:
7913:
7912:
7907:
7902:
7897:
7892:
7886:
7884:
7878:
7877:
7875:
7874:
7869:
7864:
7859:
7854:
7849:
7844:
7839:
7833:
7831:
7824:
7822:Classification
7818:
7817:
7809:
7808:
7801:
7794:
7786:
7777:
7776:
7774:
7773:
7768:
7763:
7758:
7753:
7748:
7743:
7737:
7735:
7731:
7730:
7728:
7727:
7720:
7713:
7705:
7703:
7699:
7698:
7696:
7695:
7690:
7685:
7684:
7683:
7678:
7668:
7666:Plug-in hybrid
7663:
7658:
7656:Hybrid vehicle
7653:
7648:
7643:
7638:
7632:
7630:
7626:
7625:
7623:
7622:
7617:
7612:
7607:
7602:
7596:
7594:
7590:
7589:
7587:
7586:
7581:
7576:
7574:Hydrogen train
7571:
7566:
7561:
7556:
7550:
7548:
7542:
7541:
7539:
7538:
7533:
7528:
7523:
7518:
7513:
7508:
7503:
7498:
7493:
7488:
7483:
7477:
7475:
7466:
7465:
7463:
7462:
7461:
7460:
7455:
7450:
7440:
7435:
7434:
7433:
7423:
7418:
7413:
7408:
7403:
7398:
7393:
7388:
7387:
7386:
7376:
7371:
7369:Electric truck
7366:
7365:
7364:
7354:
7353:
7352:
7342:
7337:
7332:
7327:
7322:
7317:
7311:
7309:
7298:
7297:
7295:
7294:
7289:
7284:
7278:
7276:
7268:
7267:
7265:
7264:
7259:
7254:
7253:
7252:
7251:
7250:
7240:
7235:
7230:
7219:
7217:
7211:
7210:
7208:
7207:
7202:
7196:
7194:
7188:
7187:
7185:
7184:
7178:
7176:
7170:
7169:
7162:
7161:
7154:
7147:
7139:
7130:
7129:
7127:
7126:
7121:
7116:
7111:
7110:
7109:
7099:
7094:
7089:
7084:
7079:
7073:
7071:
7067:
7066:
7064:
7063:
7058:
7053:
7048:
7043:
7038:
7033:
7028:
7023:
7017:
7015:
7014:Infrastructure
7011:
7010:
7003:
7001:
6998:
6997:
6995:
6994:
6988:
6986:
6982:
6981:
6979:
6978:
6973:
6968:
6962:
6960:
6954:
6953:
6951:
6950:
6949:
6948:
6938:
6933:
6928:
6923:
6918:
6913:
6907:
6905:
6899:
6898:
6896:
6895:
6890:
6885:
6880:
6878:Regasification
6875:
6870:
6865:
6860:
6855:
6850:
6845:
6840:
6835:
6834:
6833:
6828:
6817:
6815:
6802:
6798:
6797:
6790:
6789:
6782:
6775:
6767:
6758:
6757:
6755:
6754:
6743:
6740:
6739:
6737:
6736:
6731:
6726:
6721:
6716:
6711:
6706:
6701:
6696:
6690:
6688:
6684:
6683:
6681:
6680:
6675:
6670:
6669:
6668:
6663:
6653:
6648:
6643:
6638:
6633:
6628:
6622:
6620:
6616:
6615:
6613:
6612:
6607:
6602:
6597:
6590:
6579:
6572:
6567:
6565:Chinese tallow
6562:
6555:
6550:
6542:
6540:
6532:
6531:
6529:
6528:
6523:
6518:
6513:
6508:
6503:
6498:
6491:
6486:
6481:
6476:
6471:
6466:
6461:
6456:
6451:
6446:
6441:
6433:
6431:
6423:
6422:
6420:
6419:
6414:
6412:Water hyacinth
6409:
6404:
6403:
6402:
6392:
6387:
6386:
6385:
6380:
6370:
6369:
6368:
6358:
6353:
6348:
6343:
6338:
6333:
6328:
6323:
6318:
6313:
6307:
6305:
6299:
6298:
6291:
6290:
6283:
6276:
6268:
6261:
6260:
6248:
6236:
6224:
6212:
6191:
6190:
6185:
6180:
6175:
6169:
6167:
6166:External links
6164:
6163:
6162:
6155:
6153:978-0857094988
6142:
6136:
6121:
6115:
6110:
6102:
6099:
6096:
6095:
6073:
6052:
6031:
6010:
5988:
5947:
5912:(4): 549–550.
5896:
5861:(1): 545–549.
5845:
5802:
5795:
5767:
5756:
5749:
5724:
5694:
5683:on 24 May 2015
5668:
5638:
5627:on 10 May 2015
5621:GPS Renewables
5608:
5576:
5555:
5534:
5513:
5492:
5471:
5445:
5434:on 10 May 2017
5413:
5402:on 18 May 2015
5396:GPS Renewables
5383:
5353:
5341:
5323:
5297:
5271:
5253:
5224:
5198:
5183:
5157:
5111:
5089:
5063:
5042:
5013:
4966:
4919:
4884:
4846:
4824:
4811:(2): 142–156.
4788:
4745:
4713:
4667:
4645:
4613:
4585:
4559:
4520:
4501:
4482:
4470:
4448:
4423:
4404:
4392:
4371:
4347:
4321:
4310:on 6 July 2011
4295:
4264:
4252:
4240:
4220:
4203:
4177:
4126:
4101:
4076:
4050:
4039:on 7 July 2011
4024:
4002:
3987:
3938:
3908:
3859:
3844:
3827:
3807:
3792:
3766:
3736:
3723:
3705:
3669:
3643:
3617:
3599:
3570:
3540:
3531:
3522:
3507:
3488:
3460:
3408:
3363:
3334:(4): 275–282.
3318:
3292:
3270:
3251:
3229:
3183:
3164:
3146:
3120:
3099:
3042:
3001:
2959:
2940:
2914:
2879:(6): 755–781.
2859:
2816:
2798:
2776:
2765:on 10 May 2018
2759:www.simgas.com
2745:
2728:
2727:
2725:
2722:
2720:
2719:
2710:
2704:
2699:
2690:
2684:
2678:
2672:
2666:
2662:
2658:
2652:
2646:
2640:
2634:
2628:
2622:
2613:
2607:
2600:
2599:
2598:
2584:
2568:
2565:
2548:
2545:
2544:
2543:
2540:
2537:
2534:
2527:
2520:
2511:
2508:
2491:
2488:
2449:
2446:
2372:
2369:
2321:
2318:
2277:
2274:
2268:
2265:
2246:
2243:
2213:
2210:
2194:Oakley, Kansas
2166:kilowatt hours
2156:
2153:
2151:
2148:
2112:
2109:
2074:
2073:European Union
2071:
2069:
2066:
2041:
2038:
2029:
2026:
2013:eutrophication
1973:
1970:
1957:Sweet as a Nut
1939:
1936:
1907:
1904:
1877:Carbon dioxide
1853:
1840:
1828:
1819:
1816:
1773:
1770:
1757:
1739:
1738:
1736:
1735:
1728:
1721:
1713:
1710:
1709:
1708:
1707:
1702:
1694:
1693:
1692:
1691:
1683:
1682:
1681:
1680:
1675:
1670:
1669:
1668:
1658:
1653:
1648:
1643:
1638:
1633:
1628:
1623:
1622:
1621:
1616:
1611:
1601:
1600:
1599:
1589:
1584:
1579:
1574:
1569:
1564:
1559:
1554:
1546:
1545:
1537:
1536:
1530:
1529:
1522:
1519:
1486:
1475:
1459:
1447:combustion gas
1430:
1427:
1418:
1397:
1385:
1382:
1374:
1365:
1349:
1341:sulfur dioxide
1328:
1315:
1312:
1310:
1307:
1284:
1283:
1276:
1275:
1272:
1266:
1259:
1253:
1252:
1249:
1242:
1235:
1229:
1228:
1225:
1219:
1212:
1206:
1205:
1202:
1196:
1189:
1183:
1182:
1179:
1173:
1166:
1164:Carbon dioxide
1160:
1159:
1156:
1150:
1143:
1137:
1136:
1133:
1128:
1114:
1111:
1096:
1093:
1062:Main article:
1059:
1056:
1042:Biogas can be
1037:greenhouse gas
1025:
1017:
1010:
1002:
996:greenhouse gas
992:Carbon dioxide
971:
968:
947:
944:
916:
915:Bio-gas Plants
913:
904:
903:
896:
877:Main article:
874:
871:
852:
849:
836:
833:
824:motor vehicles
792:
776:
764:
716:plant material
691:
690:
688:
687:
680:
673:
665:
662:
661:
660:
659:
645:
629:
628:
625:
624:
623:
622:
612:
611:
610:
603:Rail transport
600:
595:
594:
593:
588:
583:
578:
576:Roller skating
573:
572:
571:
566:
561:
556:
551:
549:Cycle rickshaw
546:
536:
531:
521:
520:
519:
514:
513:
512:
505:Human-electric
500:Hybrid vehicle
497:
496:
495:
490:
485:
484:
483:
467:
462:
461:
458:
457:
454:
453:
452:
451:
446:
441:
436:
431:
426:
421:
416:
411:
406:
401:
391:
386:
381:
379:Renewable heat
376:
371:
366:
365:
364:
359:
354:
344:
339:
334:
333:
332:
327:
322:
317:
312:
302:
297:
292:
287:
282:
277:
272:
271:
270:
259:
254:
253:
250:
249:
246:
245:
240:
235:
230:
225:
220:
215:
210:
205:
200:
195:
190:
185:
180:
175:
170:
168:Green building
165:
160:
155:
150:
145:
140:
138:Energy storage
135:
130:
125:
120:
115:
110:
105:
100:
95:
90:
85:
80:
75:
70:
65:
59:
54:
53:
50:
49:
41:
40:
34:
33:
15:
9:
6:
4:
3:
2:
8943:
8932:
8929:
8927:
8924:
8922:
8919:
8917:
8914:
8912:
8909:
8907:
8904:
8902:
8899:
8897:
8894:
8892:
8889:
8887:
8884:
8882:
8879:
8877:
8874:
8873:
8871:
8856:
8853:
8851:
8848:
8846:
8843:
8842:
8839:
8833:
8830:
8828:
8825:
8823:
8820:
8818:
8815:
8813:
8810:
8808:
8805:
8803:
8802:Reciprocating
8800:
8798:
8795:
8793:
8790:
8788:
8785:
8783:
8780:
8779:
8777:
8773:
8767:
8763:
8756:
8752:
8749:
8745:
8742:
8738:
8735:
8731:
8728:
8724:
8721:
8720:Rear mid-rear
8717:
8714:
8710:
8707:
8703:
8700:
8696:
8693:
8690:
8689:
8687:
8681:
8677:
8671:
8668:
8666:
8663:
8661:
8658:
8657:
8655:
8653:
8649:
8643:
8640:
8638:
8635:
8633:
8630:
8628:
8625:
8623:
8620:
8618:
8615:
8613:
8610:
8608:
8605:
8604:
8602:
8600:
8596:
8590:
8587:
8585:
8582:
8580:
8577:
8575:
8572:
8570:
8567:
8564:
8560:
8557:
8555:
8552:
8549:
8545:
8542:
8540:
8537:
8535:
8532:
8530:
8527:
8525:
8522:
8519:
8515:
8512:
8509:
8506:
8504:
8500:
8497:
8495:
8492:
8490:
8487:
8485:
8482:
8480:
8477:
8475:
8472:
8470:
8467:
8465:
8462:
8460:
8457:
8456:
8454:
8452:
8448:
8442:
8439:
8437:
8434:
8432:
8429:
8427:
8424:
8422:
8419:
8417:
8414:
8412:
8409:
8407:
8404:
8402:
8399:
8397:
8394:
8392:
8389:
8387:
8384:
8382:
8379:
8378:
8376:
8370:
8364:
8361:
8359:
8356:
8354:
8351:
8349:
8346:
8344:
8341:
8339:
8336:
8334:
8333:Station wagon
8331:
8329:
8326:
8324:
8321:
8319:
8316:
8314:
8311:
8309:
8306:
8304:
8301:
8299:
8296:
8294:
8291:
8289:
8286:
8284:
8281:
8279:
8276:
8274:
8271:
8269:
8266:
8264:
8261:
8259:
8256:
8254:
8251:
8249:
8246:
8244:
8241:
8239:
8236:
8234:
8231:
8229:
8226:
8224:
8223:Coupé utility
8221:
8219:
8216:
8214:
8211:
8209:
8206:
8204:
8201:
8199:
8196:
8194:
8191:
8189:
8186:
8184:
8181:
8179:
8176:
8174:
8171:
8170:
8168:
8166:
8162:
8152:
8149:
8147:
8144:
8142:
8139:
8137:
8134:
8132:
8129:
8127:
8124:
8122:
8119:
8117:
8114:
8112:
8109:
8108:
8106:
8104:
8100:
8094:
8091:
8089:
8086:
8084:
8081:
8079:
8076:
8074:
8071:
8069:
8066:
8065:
8063:
8059:
8053:
8050:
8048:
8045:
8043:
8040:
8038:
8037:Sport compact
8035:
8033:
8030:
8028:
8025:
8023:
8020:
8018:
8015:
8014:
8012:
8010:
8006:
8000:
7997:
7995:
7992:
7990:
7987:
7985:
7982:
7981:
7979:
7977:
7973:
7967:
7964:
7962:
7959:
7957:
7954:
7953:
7951:
7949:
7948:Minivan / MPV
7945:
7939:
7936:
7934:
7931:
7929:
7926:
7925:
7923:
7921:
7917:
7911:
7908:
7906:
7903:
7901:
7898:
7896:
7893:
7891:
7888:
7887:
7885:
7883:
7879:
7873:
7870:
7868:
7865:
7863:
7860:
7858:
7855:
7853:
7850:
7848:
7845:
7843:
7840:
7838:
7835:
7834:
7832:
7828:
7825:
7823:
7819:
7814:
7807:
7802:
7800:
7795:
7793:
7788:
7787:
7784:
7772:
7769:
7767:
7764:
7762:
7761:Windmill ship
7759:
7757:
7754:
7752:
7749:
7747:
7744:
7742:
7739:
7738:
7736:
7732:
7726:
7725:
7721:
7719:
7718:
7714:
7712:
7711:
7707:
7706:
7704:
7702:Documentaries
7700:
7694:
7693:Electric boat
7691:
7689:
7686:
7682:
7679:
7677:
7674:
7673:
7672:
7671:Solar vehicle
7669:
7667:
7664:
7662:
7659:
7657:
7654:
7652:
7649:
7647:
7644:
7642:
7639:
7637:
7634:
7633:
7631:
7629:Multiple-fuel
7627:
7621:
7618:
7616:
7613:
7611:
7608:
7606:
7603:
7601:
7598:
7597:
7595:
7591:
7585:
7582:
7580:
7577:
7575:
7572:
7570:
7567:
7565:
7562:
7560:
7557:
7555:
7552:
7551:
7549:
7547:
7543:
7537:
7534:
7532:
7531:Methanol fuel
7529:
7527:
7524:
7522:
7519:
7517:
7514:
7512:
7509:
7507:
7504:
7502:
7499:
7497:
7494:
7492:
7489:
7487:
7484:
7482:
7479:
7478:
7476:
7474:
7471:
7467:
7459:
7456:
7454:
7451:
7449:
7446:
7445:
7444:
7443:Solar vehicle
7441:
7439:
7436:
7432:
7429:
7428:
7427:
7424:
7422:
7419:
7417:
7414:
7412:
7409:
7407:
7404:
7402:
7399:
7397:
7394:
7392:
7389:
7385:
7382:
7381:
7380:
7377:
7375:
7372:
7370:
7367:
7363:
7360:
7359:
7358:
7355:
7351:
7348:
7347:
7346:
7343:
7341:
7340:Electric boat
7338:
7336:
7333:
7331:
7328:
7326:
7323:
7321:
7318:
7316:
7313:
7312:
7310:
7308:
7303:
7299:
7293:
7292:Tesla turbine
7290:
7288:
7285:
7283:
7280:
7279:
7277:
7275:
7269:
7263:
7262:Electric boat
7260:
7258:
7255:
7249:
7246:
7245:
7244:
7241:
7239:
7236:
7234:
7231:
7229:
7226:
7225:
7224:
7223:Solar vehicle
7221:
7220:
7218:
7216:
7212:
7206:
7203:
7201:
7198:
7197:
7195:
7193:
7189:
7183:
7180:
7179:
7177:
7175:
7171:
7167:
7160:
7155:
7153:
7148:
7146:
7141:
7140:
7137:
7125:
7122:
7120:
7117:
7115:
7112:
7108:
7105:
7104:
7103:
7100:
7098:
7095:
7093:
7090:
7088:
7085:
7083:
7080:
7078:
7077:Bunsen burner
7075:
7074:
7072:
7068:
7062:
7059:
7057:
7054:
7052:
7049:
7047:
7044:
7042:
7039:
7037:
7034:
7032:
7029:
7027:
7024:
7022:
7019:
7018:
7016:
7012:
7007:
6993:
6990:
6989:
6987:
6983:
6977:
6974:
6972:
6969:
6967:
6964:
6963:
6961:
6959:
6955:
6947:
6944:
6943:
6942:
6939:
6937:
6934:
6932:
6929:
6927:
6924:
6922:
6919:
6917:
6914:
6912:
6909:
6908:
6906:
6904:
6900:
6894:
6891:
6889:
6886:
6884:
6881:
6879:
6876:
6874:
6871:
6869:
6866:
6864:
6861:
6859:
6856:
6854:
6851:
6849:
6846:
6844:
6841:
6839:
6836:
6832:
6829:
6827:
6824:
6823:
6822:
6819:
6818:
6816:
6813:
6806:
6803:
6799:
6795:
6788:
6783:
6781:
6776:
6774:
6769:
6768:
6765:
6753:
6745:
6744:
6741:
6735:
6732:
6730:
6727:
6725:
6724:Food vs. fuel
6722:
6720:
6717:
6715:
6712:
6710:
6707:
6705:
6702:
6700:
6697:
6695:
6692:
6691:
6689:
6685:
6679:
6676:
6674:
6671:
6667:
6664:
6662:
6659:
6658:
6657:
6654:
6652:
6649:
6647:
6644:
6642:
6639:
6637:
6634:
6632:
6629:
6627:
6624:
6623:
6621:
6617:
6611:
6608:
6606:
6603:
6601:
6598:
6596:
6595:
6591:
6589:
6588:
6584:
6580:
6578:
6577:
6573:
6571:
6568:
6566:
6563:
6561:
6560:
6556:
6554:
6551:
6549:
6548:
6544:
6543:
6541:
6539:
6533:
6527:
6524:
6522:
6519:
6517:
6514:
6512:
6509:
6507:
6504:
6502:
6499:
6497:
6496:
6492:
6490:
6487:
6485:
6482:
6480:
6477:
6475:
6472:
6470:
6467:
6465:
6462:
6460:
6457:
6455:
6452:
6450:
6447:
6445:
6442:
6440:
6439:
6435:
6434:
6432:
6430:
6424:
6418:
6415:
6413:
6410:
6408:
6405:
6401:
6398:
6397:
6396:
6393:
6391:
6388:
6384:
6381:
6379:
6376:
6375:
6374:
6371:
6367:
6366:vegetable oil
6364:
6363:
6362:
6359:
6357:
6354:
6352:
6349:
6347:
6344:
6342:
6339:
6337:
6334:
6332:
6329:
6327:
6324:
6322:
6319:
6317:
6314:
6312:
6309:
6308:
6306:
6304:
6300:
6296:
6289:
6284:
6282:
6277:
6275:
6270:
6269:
6266:
6259:
6249:
6247:
6242:
6237:
6235:
6225:
6223:
6218:
6213:
6211:
6206:
6201:
6200:
6197:
6189:
6186:
6184:
6181:
6179:
6176:
6174:
6171:
6170:
6160:
6156:
6154:
6150:
6147:
6143:
6139:
6133:
6129:
6128:
6122:
6119:
6116:
6114:
6111:
6108:
6105:
6104:
6091:
6087:
6083:
6077:
6062:
6056:
6041:
6035:
6020:
6014:
6006:
5999:
5992:
5983:
5978:
5974:
5970:
5967:(1): 012025.
5966:
5962:
5958:
5951:
5943:
5939:
5935:
5931:
5927:
5923:
5919:
5915:
5911:
5907:
5900:
5892:
5888:
5884:
5880:
5876:
5872:
5868:
5864:
5860:
5856:
5849:
5841:
5837:
5833:
5829:
5825:
5821:
5817:
5813:
5806:
5798:
5796:9789462520622
5792:
5787:
5782:
5778:
5771:
5765:
5760:
5752:
5746:
5742:
5738:
5731:
5729:
5712:
5708:
5704:
5698:
5682:
5678:
5672:
5656:
5652:
5648:
5642:
5626:
5622:
5618:
5612:
5593:
5586:
5580:
5565:
5559:
5544:
5538:
5523:
5517:
5502:
5496:
5481:
5475:
5460:
5459:New Scientist
5456:
5449:
5430:
5423:
5417:
5401:
5397:
5393:
5387:
5372:on 2 May 2015
5371:
5367:
5363:
5357:
5350:
5345:
5339:
5335:
5332:
5327:
5311:
5307:
5301:
5285:
5281:
5275:
5269:
5265:
5262:
5257:
5238:
5234:
5228:
5212:
5208:
5202:
5195:
5190:
5188:
5171:
5167:
5161:
5146:
5142:
5138:
5134:
5130:
5126:
5122:
5115:
5099:
5093:
5077:
5073:
5067:
5052:
5046:
5027:
5023:
5017:
5009:
5005:
5001:
4997:
4993:
4989:
4985:
4981:
4977:
4970:
4962:
4958:
4954:
4950:
4946:
4942:
4938:
4934:
4930:
4923:
4915:
4911:
4907:
4903:
4899:
4895:
4888:
4880:
4876:
4872:
4868:
4864:
4860:
4853:
4851:
4834:
4828:
4819:
4814:
4810:
4806:
4802:
4795:
4793:
4784:
4780:
4776:
4772:
4768:
4764:
4760:
4756:
4749:
4730:
4723:
4717:
4709:
4705:
4701:
4697:
4693:
4689:
4685:
4681:
4674:
4672:
4655:
4649:
4630:
4623:
4617:
4598:
4592:
4590:
4573:
4569:
4563:
4544:
4540:
4533:
4527:
4525:
4518:
4514:
4511:
4505:
4499:
4495:
4492:
4486:
4480:
4474:
4466:
4459:
4452:
4437:
4433:
4427:
4421:
4417:
4414:
4408:
4402:
4396:
4381:
4375:
4357:
4351:
4335:
4331:
4325:
4309:
4305:
4299:
4283:
4279:
4275:
4268:
4261:
4256:
4249:
4244:
4237:
4233:
4230:
4224:
4217:
4213:
4207:
4192:
4188:
4181:
4172:
4167:
4162:
4157:
4153:
4149:
4146:(3): 034002.
4145:
4141:
4137:
4130:
4115:
4111:
4105:
4087:
4080:
4065:
4061:
4054:
4038:
4034:
4028:
4019:
4014:
4006:
3998:
3991:
3983:
3979:
3974:
3969:
3965:
3961:
3957:
3953:
3949:
3942:
3926:
3922:
3918:
3912:
3904:
3900:
3895:
3890:
3886:
3882:
3878:
3874:
3870:
3863:
3855:
3851:
3847:
3841:
3837:
3831:
3824:
3820:
3817:
3811:
3804:
3799:
3797:
3781:
3777:
3770:
3754:
3750:
3746:
3740:
3733:
3727:
3721:
3717:
3714:
3709:
3690:
3686:
3679:
3673:
3657:
3653:
3647:
3631:
3627:
3621:
3615:
3611:
3608:
3603:
3584:
3580:
3574:
3558:
3554:
3547:
3545:
3535:
3526:
3519:
3517:
3511:
3504:
3500:
3497:
3492:
3486:(broken link)
3475:
3471:
3464:
3456:
3452:
3448:
3444:
3440:
3436:
3432:
3428:
3421:
3419:
3417:
3415:
3413:
3403:
3398:
3394:
3390:
3386:
3382:
3378:
3374:
3367:
3358:
3353:
3349:
3345:
3341:
3337:
3333:
3329:
3322:
3306:
3302:
3296:
3288:
3281:
3274:
3267:
3263:
3260:
3255:
3247:
3240:
3233:
3225:
3219:
3200:
3193:
3187:
3180:
3176:
3173:
3168:
3162:
3158:
3155:
3150:
3134:
3130:
3124:
3109:
3103:
3095:
3091:
3087:
3083:
3078:
3073:
3069:
3065:
3061:
3057:
3053:
3046:
3038:
3034:
3029:
3024:
3020:
3016:
3012:
3005:
2997:
2993:
2989:
2985:
2981:
2977:
2970:
2963:
2955:
2954:New Scientist
2951:
2944:
2928:
2924:
2918:
2910:
2906:
2902:
2898:
2894:
2890:
2886:
2882:
2878:
2874:
2870:
2863:
2855:
2851:
2847:
2843:
2839:
2835:
2831:
2827:
2820:
2812:
2808:
2802:
2786:
2780:
2764:
2760:
2756:
2749:
2742:
2738:
2733:
2729:
2714:
2711:
2708:
2705:
2703:
2700:
2694:
2691:
2688:
2685:
2682:
2679:
2676:
2673:
2670:
2667:
2656:
2653:
2650:
2647:
2644:
2641:
2638:
2635:
2632:
2629:
2626:
2623:
2617:
2614:
2611:
2608:
2605:
2602:
2601:
2596:
2595:Energy portal
2590:
2585:
2582:
2576:
2571:
2564:
2561:
2558:
2556:
2555:
2541:
2538:
2535:
2532:
2528:
2525:
2521:
2518:
2514:
2513:
2507:
2503:
2501:
2500:faecal sludge
2497:
2487:
2483:
2479:
2477:
2473:
2469:
2465:
2460:
2458:
2453:
2445:
2442:
2438:
2436:
2432:
2428:
2423:
2418:
2414:
2412:
2407:
2403:
2399:
2395:
2394:
2388:
2386:
2382:
2377:
2368:
2365:
2363:
2359:
2354:
2350:
2346:
2344:
2340:
2339:clean cooking
2330:
2326:
2317:
2313:
2309:
2303:
2299:
2295:
2289:
2287:
2282:
2273:
2264:
2262:
2257:
2255:
2250:
2242:
2238:
2236:
2232:
2223:
2218:
2209:
2206:
2201:
2199:
2195:
2190:
2187:
2186:ethanol power
2183:
2178:
2176:
2170:
2167:
2163:
2155:United States
2147:
2145:
2141:
2137:
2133:
2128:
2126:
2122:
2121:Clean Air Act
2118:
2111:United States
2108:
2106:
2102:
2098:
2094:
2090:
2085:
2082:
2080:
2065:
2061:
2057:
2055:
2051:
2046:
2045:Faecal Sludge
2037:
2035:
2034:nanoparticles
2025:
2023:
2018:
2014:
2010:
2009:acidification
2007:However, the
2005:
2003:
1999:
1995:
1991:
1990:co-generating
1986:
1983:
1979:
1969:
1965:
1961:
1958:
1949:
1944:
1935:
1931:
1929:
1925:
1921:
1917:
1913:
1903:
1899:
1897:
1892:
1890:
1886:
1882:
1878:
1874:
1870:
1866:
1861:
1815:
1813:
1809:
1805:
1801:
1800:water heating
1797:
1793:
1790:
1783:
1778:
1769:
1767:
1750:
1749:nitrous oxide
1746:
1734:
1729:
1727:
1722:
1720:
1715:
1714:
1712:
1711:
1706:
1703:
1701:
1698:
1697:
1696:
1695:
1690:
1687:
1686:
1685:
1684:
1679:
1676:
1674:
1671:
1667:
1664:
1663:
1662:
1659:
1657:
1654:
1652:
1649:
1647:
1644:
1642:
1641:Osmotic power
1639:
1637:
1636:Ocean thermal
1634:
1632:
1631:Marine energy
1629:
1627:
1624:
1620:
1617:
1615:
1612:
1610:
1607:
1606:
1605:
1602:
1598:
1595:
1594:
1593:
1590:
1588:
1585:
1583:
1580:
1578:
1575:
1573:
1570:
1568:
1565:
1563:
1560:
1558:
1555:
1553:
1550:
1549:
1548:
1547:
1543:
1539:
1538:
1535:
1532:
1531:
1527:
1526:
1518:
1515:
1513:
1512:white mineral
1509:
1505:
1501:
1497:
1489:
1478:
1468:
1452:
1448:
1444:
1440:
1436:
1426:
1424:
1410:
1406:
1390:
1381:
1358:
1357:sulfuric acid
1342:
1338:
1321:
1306:
1304:
1299:
1296:
1291:
1282:
1277:
1273:
1260:
1258:
1255:
1254:
1250:
1236:
1234:
1231:
1230:
1226:
1213:
1211:
1208:
1207:
1203:
1190:
1188:
1185:
1184:
1180:
1167:
1165:
1162:
1161:
1157:
1144:
1142:
1139:
1138:
1132:
1129:
1127:
1124:
1123:
1120:
1110:
1107:
1103:
1101:
1092:
1090:
1086:
1082:
1077:
1075:
1069:
1065:
1055:
1052:
1048:
1045:
1040:
1038:
1034:
1029:
1020:
1013:
1005:
997:
993:
989:
985:
981:
977:
976:air pollution
967:
965:
964:psychrophiles
961:
957:
953:
946:Key processes
943:
940:
938:
934:
930:
926:
922:
908:
901:
897:
894:
890:
886:
885:
884:
880:
870:
868:
864:
863:methanotrophs
858:
848:
846:
842:
832:
829:
825:
821:
817:
812:
810:
806:
802:
785:
757:
753:
749:
745:
741:
737:
733:
729:
725:
721:
717:
713:
709:
705:
701:
698:is a gaseous
697:
686:
681:
679:
674:
672:
667:
666:
664:
663:
657:
652:
646:
643:
633:
632:
631:
630:
621:
618:
617:
616:
615:Rapid transit
613:
609:
606:
605:
604:
601:
599:
596:
592:
589:
587:
584:
582:
581:Skateboarding
579:
577:
574:
570:
567:
565:
562:
560:
557:
555:
552:
550:
547:
545:
542:
541:
540:
537:
535:
532:
530:
527:
526:
525:
522:
518:
515:
511:
508:
507:
506:
503:
502:
501:
498:
494:
491:
489:
488:Solar vehicle
486:
482:
479:
478:
477:
474:
473:
472:
471:Green vehicle
469:
468:
465:
460:
459:
450:
447:
445:
442:
440:
437:
435:
432:
430:
427:
425:
422:
420:
417:
415:
412:
410:
407:
405:
402:
400:
397:
396:
395:
392:
390:
387:
385:
382:
380:
377:
375:
372:
370:
367:
363:
360:
358:
355:
353:
352:Tidal barrage
350:
349:
348:
345:
343:
342:Marine energy
340:
338:
335:
331:
328:
326:
323:
321:
318:
316:
313:
311:
308:
307:
306:
303:
301:
298:
296:
293:
291:
288:
286:
283:
281:
278:
276:
273:
269:
266:
265:
264:
261:
260:
257:
252:
251:
244:
241:
239:
236:
234:
231:
229:
226:
224:
221:
219:
216:
214:
211:
209:
206:
204:
201:
199:
196:
194:
193:Passive house
191:
189:
186:
184:
181:
179:
176:
174:
171:
169:
166:
164:
161:
159:
156:
154:
151:
149:
146:
144:
141:
139:
136:
134:
131:
129:
126:
124:
121:
119:
116:
114:
111:
109:
106:
104:
101:
99:
96:
94:
91:
89:
86:
84:
81:
79:
76:
74:
71:
69:
66:
64:
61:
60:
57:
52:
51:
47:
43:
42:
39:
36:
35:
31:
30:
23:
19:
8642:Twelve-wheel
8599:Drive wheels
8483:
8372:Specialized
8293:Pickup truck
8198:Cabrio coach
8042:Sports sedan
8017:Grand tourer
7722:
7715:
7708:
7651:Hybrid train
7516:Ethanol fuel
7496:Butanol fuel
7490:
7481:Alcohol fuel
7416:Hybrid train
7357:Electric car
7345:Electric bus
7102:Gas lighting
7087:Gas cylinder
6873:Producer gas
6858:Landfill gas
6853:Gasification
6837:
6592:
6586:
6582:
6574:
6557:
6553:Big bluestem
6545:
6538:energy crops
6493:
6436:
6340:
6145:
6126:
6106:
6090:the original
6085:
6076:
6064:. Retrieved
6055:
6043:. Retrieved
6034:
6022:. Retrieved
6013:
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5092:
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5026:the original
5016:
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4827:
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4729:the original
4716:
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4648:
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4629:the original
4616:
4604:. Retrieved
4576:. Retrieved
4572:the original
4562:
4550:. Retrieved
4543:the original
4539:EurObserv'ER
4504:
4485:
4473:
4464:
4451:
4439:. Retrieved
4435:
4426:
4413:Thames Water
4407:
4395:
4383:. Retrieved
4374:
4362:. Retrieved
4350:
4338:. Retrieved
4334:the original
4330:"About SEBE"
4324:
4312:. Retrieved
4308:the original
4298:
4286:. Retrieved
4282:the original
4277:
4267:
4255:
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4215:
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4190:
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4129:
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4079:
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4063:
4053:
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4037:the original
4027:
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3929:. Retrieved
3925:the original
3920:
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3783:. Retrieved
3779:
3769:
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3753:the original
3748:
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3689:the original
3684:
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3646:
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3630:the original
3620:
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3573:
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3557:the original
3534:
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3514:
3510:
3491:
3478:. Retrieved
3474:the original
3463:
3433:(1): 42–71.
3430:
3426:
3379:(2): 65–73.
3376:
3372:
3366:
3331:
3327:
3321:
3309:. Retrieved
3305:the original
3295:
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3232:
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3186:
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3123:
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3102:
3059:
3055:
3045:
3018:
3014:
3004:
2982:(6): 13–21.
2979:
2975:
2962:
2953:
2943:
2931:. Retrieved
2927:the Guardian
2926:
2917:
2876:
2872:
2862:
2832:(1): 25–50.
2829:
2825:
2819:
2811:the original
2801:
2789:. Retrieved
2779:
2767:. Retrieved
2763:the original
2758:
2748:
2732:
2562:
2559:
2552:
2550:
2510:Associations
2504:
2496:pit latrines
2493:
2484:
2480:
2461:
2454:
2451:
2443:
2439:
2435:vermiculture
2419:
2415:
2391:
2389:
2380:
2378:
2374:
2366:
2355:
2351:
2347:
2335:
2323:
2314:
2310:
2301:
2293:
2290:
2285:
2283:
2279:
2270:
2258:
2251:
2248:
2239:
2227:
2202:
2191:
2179:
2171:
2161:
2158:
2129:
2114:
2105:Zone 1 and 2
2091:centrifugal
2086:
2083:
2076:
2062:
2058:
2043:
2031:
2006:
1987:
1975:
1966:
1962:
1956:
1953:
1932:
1912:methane grid
1909:
1900:
1893:
1889:particulates
1872:
1862:
1821:
1794:, where the
1786:
1772:Applications
1742:
1646:Solar energy
1556:
1516:
1511:
1487:
1476:
1432:
1387:
1317:
1309:Contaminants
1300:
1290:Landfill gas
1287:
1280:
1118:
1108:
1104:
1098:
1078:
1070:
1067:
1064:Landfill gas
1058:Landfill gas
1053:
1049:
1041:
973:
956:thermophilic
949:
941:
921:biogas plant
920:
918:
889:landfill gas
882:
860:
838:
813:
695:
694:
554:Kick scooter
539:Land vehicle
274:
108:Energy audit
73:Cogeneration
18:
8792:Four-stroke
8692:Front-front
8632:Eight-wheel
8607:Front-wheel
8539:Natural gas
8524:Fossil fuel
8479:Biogasoline
8165:Body styles
8093:Vintage car
7501:Biogasoline
7215:Solar power
7192:Human power
7124:Pilot light
7119:Gas turbine
7026:Gas carrier
6903:Natural gas
6868:Pintsch gas
6709:Energy crop
6656:Pellet fuel
6641:Biorefinery
6605:Switchgrass
6449:Coconut oil
6427:Energy from
6361:Cooking oil
6346:Biogasoline
6321:Babassu oil
5818:: 294–303.
5739:. Seattle:
5569:22 February
5548:20 February
5233:"SNV World"
5217:21 February
5176:21 February
5104:21 February
5022:"SNV World"
4986:: 846–859.
4288:16 November
4196:11 November
4064:www.epa.gov
4043:21 February
3958:: 109–119.
3931:5 September
3879:: 181–193.
3248:(5): 11–24.
3208:22 December
3139:21 February
3062:: 321–329.
3021:(1): 7–18.
2791:21 November
2675:Natural gas
2655:Methanation
2637:Biohydrogen
2468:Qing county
2457:agriculture
2406:algaculture
2385:ferrocement
2381:Deenabandhu
2068:Legislation
2017:fossil fuel
2002:fossil fuel
1982:Caterpillar
1869:natural gas
1661:Tidal power
1651:Solar power
1619:Small hydro
1609:Micro hydro
1425:emissions.
1405:amino acids
1113:Composition
980:natural gas
841:methanogens
820:natural gas
752:biodigester
744:methanogens
724:green waste
559:Quadracycle
414:Forecasting
347:Tidal power
330:Small hydro
315:Micro hydro
268:Sustainable
133:Energy Star
8870:Categories
8817:Two-stroke
8713:Front-rear
8706:Rear-front
8622:Four-wheel
8612:Rear-wheel
8451:Propulsion
8441:Voiturette
8426:Flying car
8421:Police car
8386:Amphibious
8298:Quad coupé
8188:Berlinetta
7905:Street rod
7847:Subcompact
7107:Gas mantle
7097:Gas heater
7092:Gas engine
7082:Gas burner
7031:Gas holder
6619:Technology
6600:Salicornia
6583:Miscanthus
6506:Sugar beet
6378:cellulosic
6351:Bioliquids
6331:Biobutanol
5485:31 January
5464:31 January
5438:31 January
4939:: 122257.
4839:5 November
4738:5 November
4638:7 November
4606:5 November
4578:7 November
4552:7 November
4171:2152/20290
4119:19 October
4094:19 October
3845:0946121168
3698:20 October
3402:1813/60787
3357:1813/60790
2724:References
2427:wastewater
2261:Ecotricity
2231:MT-Energie
2097:2014–34/EU
2050:composting
1873:biomethane
1812:fuel cells
1796:waste heat
1792:gas engine
1678:Wind power
1673:Wave power
1614:Pico hydro
1604:Hydropower
1508:phosphorus
952:mesophilic
873:Industrial
855:See also:
835:Production
816:compressed
809:fuel cells
756:bioreactor
746:inside an
732:food waste
728:wastewater
591:Watercraft
569:Velomobile
529:Helicopter
357:Tidal farm
320:Pico hydro
305:Hydropower
88:Eco-cities
8727:Rear-rear
8637:Ten-wheel
8627:Six-wheel
8617:Two-wheel
8529:Fuel cell
8469:Biodiesel
8436:Tow truck
8411:Pedal car
8391:Connected
8363:Vis-à-vis
8338:Targa top
8283:Panel van
8278:Notchback
8258:Limousine
8248:Landaulet
8238:Hatchback
8183:Barchetta
8151:S-segment
8146:M-segment
8141:J-segment
8136:F-segment
8131:E-segment
8126:D-segment
8121:C-segment
8116:B-segment
8111:A-segment
8022:Hot hatch
7999:Coupe SUV
7933:Executive
7895:Lead sled
7872:Full-size
7852:Supermini
7681:Solar bus
7676:Solar car
7661:Multifuel
7486:Biodiesel
7458:Solar bus
7453:Solar car
7243:Solar car
7238:Solar bus
7174:Fuel cell
7114:Gas stove
7036:Gas meter
6888:Water gas
6694:Agflation
6587:giganteus
6516:Sunflower
6511:Sugarcane
6429:foodstock
6336:Biodiesel
6295:Bioenergy
5934:0956-053X
5891:154461345
5883:1364-0321
5840:1364-0321
5316:3 January
5290:3 January
5008:1364-0321
4961:0959-6526
4900:: 90–94.
4441:2 January
3999:: 81–100.
3982:0921-3449
3903:0360-5442
3734:, p. F17.
3447:1932-104X
3301:"Juniper"
3094:254174784
3037:208716124
2933:5 October
2901:0360-1285
2625:Bioenergy
2402:spirulina
2398:algae oil
2224:, Finland
2052:or in an
1978:Jenbacher
1948:Linköping
1467:silicates
1435:siloxanes
1429:Siloxanes
1095:Technical
1044:explosive
937:digestate
857:Marsh gas
801:siloxanes
534:Hydrofoil
399:Community
173:Heat pump
83:Eco hotel
8911:Fuel gas
8881:Biofuels
8850:Category
8827:W engine
8812:Straight
8569:Hydrogen
8534:Fuel gas
8499:Electric
8374:vehicles
8313:Runabout
8263:Microvan
8253:Liftback
8243:Kammback
8228:Fastback
8203:Cab over
8193:Brougham
7938:Personal
7910:T-bucket
7900:Lowrider
7867:Mid-size
7751:Vactrain
7734:See also
7546:Hydrogen
7536:Wood gas
7448:aircraft
7056:Odorizer
7041:Gasworks
6992:Hydrogen
6893:Wood gas
6863:Mond gas
6848:Blau gas
6821:Coal gas
6794:Fuel gas
6752:Category
6687:Concepts
6570:Duckweed
6559:Camelina
6536:Non-food
6484:Rapeseed
6474:Palm oil
6417:Wood gas
6390:Methanol
6383:mixtures
6303:Biofuels
6246:Cheshire
5942:20089392
5334:Archived
5264:Archived
5150:20 April
4783:54685767
4700:12794299
4568:"Biogas"
4513:Archived
4494:Archived
4416:Archived
4314:13 April
4232:Archived
4191:NPR News
3854:59190792
3819:Archived
3716:Archived
3610:Archived
3499:Archived
3480:30 April
3455:84907789
3262:Archived
3218:cite web
3175:Archived
3157:Archived
3086:36592586
2996:67849856
2909:95588169
2854:62815957
2567:See also
2101:Combimac
1409:proteins
1279:Source:
1210:Hydrogen
1187:Nitrogen
1126:Compound
990:source,
982:as when
642:Category
564:Tricycle
449:Windpump
444:Windbelt
419:Industry
98:Ecolabel
93:Ecohouse
63:Arcology
8916:Methane
8896:Biomass
8822:V (Vee)
8797:H-block
8563:plug-in
8561: (
8546: (
8516: (
8514:Ethanol
8503:battery
8501: (
8474:Biofuel
8464:Autogas
8431:Taxicab
8406:Gyrocar
8401:Go-kart
8348:Touring
8343:Torpedo
8288:Phaeton
8268:Minibus
8233:Hardtop
8078:Economy
8073:Classic
8068:Antique
8052:Go-kart
7984:Compact
7961:Leisure
7956:Compact
7890:Hot rod
7862:Compact
7830:By size
7620:Propane
7600:Autogas
7470:Biofuel
7335:Pedelec
7205:Pedelec
6976:Propane
6966:Autogas
6946:Bio-SNG
6812:History
6501:Soybean
6495:Sorghum
6444:Cassava
6373:Ethanol
6356:Biomass
6326:Bagasse
6311:Alcohol
6234:Ecology
6196:Portals
6130:. FAO.
5969:Bibcode
5914:Bibcode
5863:Bibcode
5820:Bibcode
5601:20 June
5527:20 June
5133:Bibcode
4988:Bibcode
4941:Bibcode
4902:Bibcode
4867:Bibcode
4763:Bibcode
4708:9468552
4364:17 June
4148:Bibcode
4069:17 June
3960:Bibcode
3881:Bibcode
3636:17 June
3381:Bibcode
3336:Bibcode
3064:Bibcode
2881:Bibcode
2834:Bibcode
2669:MSW/LFG
2631:Biofuel
2276:Germany
2222:Mikkeli
1745:methane
1562:Biomass
1552:Biofuel
1510:. Such
1496:calcium
1443:silicon
1389:Ammonia
1384:Ammonia
1295:in-situ
1141:Methane
1131:Formula
984:methane
970:Dangers
851:Natural
586:Walking
544:Bicycle
517:Plug-in
481:Bicycle
439:Turbine
429:Outline
280:Biomass
263:Biofuel
8845:Portal
8832:Wankel
8757:
8753:
8750:
8746:
8743:
8739:
8736:
8732:
8729:
8725:
8722:
8718:
8715:
8711:
8708:
8704:
8701:
8697:
8694:
8680:Layout
8559:Hybrid
8494:Diesel
8484:Biogas
8178:Baquet
8027:Muscle
8009:Sports
7920:Luxury
7882:Custom
7857:Family
7815:design
7741:Maglev
7593:Others
7491:Biogas
7274:engine
6971:Butane
6883:Syngas
6838:Biogas
6547:Arundo
6479:Potato
6395:Stover
6341:Biogas
6210:Energy
6151:
6134:
6066:15 May
6045:15 May
6024:15 May
5940:
5932:
5889:
5881:
5838:
5793:
5747:
5717:15 May
5687:15 May
5661:15 May
5631:15 May
5506:29 May
5406:15 May
5376:15 May
5246:15 May
5207:"Home"
5082:15 May
5056:15 May
5035:15 May
5006:
4959:
4781:
4706:
4698:
4660:6 June
4385:15 May
4340:15 May
3980:
3901:
3873:Energy
3852:
3842:
3785:15 May
3780:NFB.ca
3759:15 May
3662:15 May
3592:15 May
3563:15 May
3453:
3445:
3311:15 May
3113:15 May
3092:
3084:
3035:
2994:
2907:
2899:
2852:
2769:16 May
2490:Zambia
2431:Sintex
2422:manure
2306:
2212:Europe
2142:, and
1887:, and
1557:Biogas
1500:sulfur
1451:silica
1355:) and
1337:thiols
1274:0–2.5
1257:Oxygen
1251:0–0.5
1181:15–50
1158:50–80
988:energy
929:silage
730:, and
720:sewage
708:manure
696:Biogas
640:
434:Rights
275:Biogas
8782:Boxer
8660:Front
8589:Steam
8358:T-top
8213:Coupe
8061:Other
8047:Super
7837:Micro
7307:motor
7233:boats
6985:Other
6801:Types
6666:stove
6521:Wheat
6464:Maize
6454:Grape
6407:Straw
6316:Algae
6001:(PDF)
5887:S2CID
5595:(PDF)
5588:(PDF)
5432:(PDF)
5425:(PDF)
5240:(PDF)
5029:(PDF)
4835:. FNR
4779:S2CID
4732:(PDF)
4725:(PDF)
4704:S2CID
4632:(PDF)
4625:(PDF)
4600:(PDF)
4546:(PDF)
4535:(PDF)
4461:(PDF)
4359:(PDF)
4089:(PDF)
3692:(PDF)
3681:(PDF)
3586:(PDF)
3451:S2CID
3283:(PDF)
3242:(PDF)
3202:(PDF)
3195:(PDF)
3090:S2CID
3033:S2CID
2992:S2CID
2972:(PDF)
2905:S2CID
2850:S2CID
2476:straw
2472:Hebei
2448:China
2404:from
2371:India
2294:StrEG
2267:Italy
1881:water
1465:) or
1204:0–10
754:or a
738:with
510:Twike
384:Solar
8787:Flat
8670:Rear
8032:Pony
7994:Mini
7966:Mini
7431:List
7362:List
7305:and
7070:Uses
6926:HCNG
6661:mill
6610:Wood
6489:Rice
6459:Hemp
6400:corn
6258:Cars
6149:ISBN
6132:ISBN
6068:2015
6047:2017
6026:2017
5938:PMID
5930:ISSN
5879:ISSN
5836:ISSN
5791:ISBN
5745:ISBN
5719:2015
5689:2015
5663:2015
5633:2015
5603:2017
5571:2018
5550:2018
5529:2017
5508:2017
5487:2018
5466:2018
5440:2018
5408:2015
5378:2015
5318:2015
5292:2015
5248:2015
5219:2010
5178:2010
5152:2023
5106:2010
5084:2015
5058:2015
5037:2015
5004:ISSN
4957:ISSN
4841:2011
4740:2011
4696:PMID
4662:2018
4640:2011
4608:2011
4580:2011
4554:2011
4443:2024
4387:2015
4366:2016
4342:2015
4316:2011
4290:2019
4198:2022
4121:2022
4096:2022
4071:2022
4045:2010
3978:ISSN
3933:2017
3899:ISSN
3850:OCLC
3840:ISBN
3787:2015
3761:2015
3700:2017
3664:2015
3638:2016
3594:2015
3565:2015
3482:2009
3443:ISSN
3313:2015
3287:CRAN
3224:link
3210:2018
3141:2010
3115:2015
3082:PMID
2935:2021
2897:ISSN
2793:2011
2771:2018
2464:haze
2356:The
2123:and
2117:VOCs
2089:ATEX
2011:and
1504:zinc
1227:0–1
974:The
954:and
843:and
805:fuel
608:Tram
424:Lens
404:Farm
394:Wind
389:Wave
8665:Mid
8518:E85
8508:NEV
8173:2+2
8088:Van
8083:Ute
7976:SUV
7842:Kei
7813:Car
7511:E85
7473:ICE
6958:LPG
6941:SNG
6936:NGC
6931:LNG
6921:CNG
6916:CBM
6911:APG
6526:Yam
6469:Oat
5977:doi
5922:doi
5871:doi
5828:doi
5781:doi
5141:doi
5129:115
4996:doi
4949:doi
4937:270
4910:doi
4875:doi
4863:112
4813:doi
4771:doi
4688:doi
4684:109
4214:."
4166:hdl
4156:doi
4013:doi
3968:doi
3956:104
3889:doi
3749:BFI
3435:doi
3397:hdl
3389:doi
3352:hdl
3344:doi
3072:doi
3060:157
3023:doi
2984:doi
2889:doi
2842:doi
2400:or
2362:SNV
2302:EEG
2192:In
2180:In
2093:fan
1994:CHP
1980:or
1810:or
1789:CHP
1455:SiO
1407:in
1021:+ 2
1007:+ 2
931:or
887:As
742:or
8872::
8103:EU
6585:×
6084:.
6003:.
5975:.
5965:60
5963:.
5959:.
5936:.
5928:.
5920:.
5910:30
5908:.
5885:.
5877:.
5869:.
5859:14
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