Mechanism of Biogas or Gobar Gas Production
▪ The raw material for biogas production is excreta (dung) of cattle.
▪ The biogas plant has a concrete tank (10–15 feet deep) in which bio-wastes and slurry of dung is collected.
▪ The tank has a floating cover which rises on production of gas in the tank.
▪ Methanobacterium in the dung act on the bio-wastes to produce biogas.
▪ The gas produced is supplied to nearby houses by an outlet.
▪ Through another outlet, the spent slurry is removed to be used as fertiliser.
▪ Biogas is used as fuel for cooking and lighting.
