Biogas, which may be called renewable natural gas (RNG) or biomethane, is an energy-rich gas produced by anaerobic decomposition or thermochemical conversion of biomass. Biogas is composed mostly of methane (CH 4) (the main compound in fossil natural gas) and carbon dioxide (CO 2). The methane. . Biogas is a gaseous renewable energy source [1] produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste, wastewater, and food waste. Biogas is produced by anaerobic digestion with anaerobic organisms or methanogens inside an anaerobic. . biogas, naturally occurring gas that is generated by the breakdown of organic matter by anaerobic bacteria and is used in energy production.
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