Biogas is an alternate source of renewable energy. A mixture of gases like methane plus carbon dioxide in a proportion of 60: 40 is produced from the organic matter and is popularly known as biogas.
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It is supplied for household use as LPG (Liquefied petroleum Gas) and also used for running vehicles as CNG (Compressed Natural Gas). It is obtained from shrubs, farm wastes, animal and human wastes.
The mixture of combustible gases obtained by the bacterial degradation of cattle dung (or any other suitable biomass) in the absence of air is called biogas. Biogas is obtained by the anaerobic fermentation of animal and agricultural wastes such as cattle dung kitchen waste etc.
Dung and any domestic / agriculture waste are mixed with water in the mixing tank. The slury so obtained is fed into the digester through the inlet chamber. Gradually, an anaerobic fermentation sets in and the biogas is produced.
Biogas is a mixture of methane (CH4), carbon dioxide (CO2), hydrogen (H2) and hydrogen sulphide (H2S). It contains about 65% methane which as an excellent fuel. Biogas is obtained by the anaerobic fermentation of animal and plant wastes in the presence of water.