Dear Aspirant,

Biogas is produced using organic material, which is broken down with the help of bacteria in an anaerobic (oxygen-free) environment. The anaerobic digestion process is a natural process that often occurs in nature. ... However, waste water, manure, energy crops and organic industrial waste are the most common feedstocks.

Animal and plant wastes can be used to produce biogas. They are processed in anaerobic digesters as a liquid or as a slurry mixed withwater . Anaerobic digesters are generally composed of a feedstock source holder, a digestion tank, a biogas recovery unit, and heat exchangers to maintain the temperature necessary for bacterial digestion. Small-scale household digesters containing as little as 757 litres (200 gallons) can be used to provide cooking fuel or electric lighting in rural homes. Millions of homes in less-developed regions, including China and parts of Africa, are estimated to use household digesters as a renewable energy source.

Thanks
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