Biogas is a mixture of gases, primarily consisting of methane, carbon dioxide and hydrogen sulphide, produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste and food waste.
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Biogas is produced by anaerobic digestion with anaerobic organisms or methanogen inside an anaerobic digester, biodigester or a bioreactor.
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Biogas can be compressed after removal of carbon dioxide and hydrogen sulphide, the same way as natural gas is compressed to CNG, and used to power motor vehicles.
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Biogas can be cleaned and upgraded to natural gas standards, when it becomes bio-methane.
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Biogas is considered to be a renewable resource because its production-and-use cycle is continuous, and it generates no net carbon dioxide.
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Biogas is produced by microorganisms, such as methanogens and sulfate-reducing bacteria, performing anaerobic respiration.
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Biogas plant is the name often given to an anaerobic digester that treats farm wastes or energy crops.
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Biogas can be used for electricity production on sewage works, in a CHP gas engine, where the waste heat from the engine is conveniently used for heating the digester; cooking; space heating; water heating; and process heating.
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Biogas is part of the wet gas and condensing gas category that includes mist or fog in the gas stream.
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Biogas environments include wastewater digesters, landfills, and animal feeding operations .
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Biogas can be used in different types of internal combustion engines, such as the Jenbacher or Caterpillar gas engines.
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Biogas can be used as the fuel in the system of producing biogas from agricultural wastes and co-generating heat and electricity in a combined heat and power plant.
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Biogas can be generated through anaerobic digestion in the treatment of faecal sludge.
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Biogas production is providing nowadays new opportunities for skilled employment, drawing on the development of new technologies.
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