5.Biogas is produced in............
areas.
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It occurs naturally in compost heaps, as swamp gas, and as a result of enteric fermentation in cattle and other ruminants. Biogas can also be produced in anaerobic digesters from plant or animal waste or collected from landfills. It is burned to generate heat or used in combustion engines to produce electricity.
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stages in biogas production
Microbes need warm conditions, so the biowaste is heated to around 37 °C. The actual biogas production takes place through anaerobic digestion in large tanks for about three weeks. In the final stage, the gas is purified (upgraded) by removing impurities and carbon dioxide.
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