Question

Name two constituents of biogas.

Answer 1

Hint: Biogas refers to a mixture of different gases produced by the breakdown of organic matter in the absence of oxygen.

Complete step-by-step answer:

Biogas can be produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste or food waste. Biogas is a renewable energy source. Biogas is produced by anaerobic digestion with methanogen or anaerobic organisms, which digest material inside a closed system, or fermentation of biodegradable materials. This closed system is called an anaerobic digester, bio digester or a bioreactor.


Biogas is primarily methane (CH4​) and carbon dioxide (CO2​) and may have small amounts of hydrogen sulphide (H2​S), moisture and siloxanes. The gases methane, hydrogen, and carbon monoxide (CO) can be combusted or oxidized with oxygen.

This energy release allows biogas to be used as a fuel; it can be used for any heating purpose, such as cooking. It can also be used in a gas engine to convert the energy in the gas into electricity and heat.

Note: Whenever we come up with this type of problem then we should remember that biogas is also considered an ideal fuel because It burns without smoke and leaves no residue and Its heat capacity is high. Therefore, biogas is included in the category of renewable energy sources because till humans and animals exist on the planet, biogas will go on being produced.