Biogas Plant Scheme

Biogas can be produced from raw materials such as animal or 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, biodigester or a bioreactor. According to the United Nations Food and Agriculture Organisation (FAO), the animal waste on this planet produces around 55–65 % methane, which upon release in the atmosphere can affect global warming 21 times higher than the rate CO₂ does. Biogas, a mixture of different gases produced by anaerobic fermentation of organic matter from methanogenic bacteria, mainly constitutes methane (50–65 %) and CO₂ (25–45 %). One kilogram of cow manure can produce 35–40 litres of biogas when mixed with equal amount of water with hydraulic retention time (HRT) of 55–60 days maintained at an ambient temperature of 24–26 °C. The biogas is then collected in balloons and further purified and compressed to produce CNG which may be used as a vehicle fuel. The digested slurry is subjected to solid liquid separation to get the solid and liquid fertilizers.

GUNI has planning to set-up a biogas plant behind KVK-Mehsana & Gaushala near village road. Biogas Plant will be set-up having 2000 m3 capacity of raw biogas which after purification and compression will yield approx. 800 kg BioCNG for use in vehicles.