Question
Describe a biogas plant.
✓
Answer
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.
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