Question

What is biomass explane the principle and working of a biogas plant

Answer 1

Biomass is biological material obtained from living or recently living organisms that can be processed into electricity, fuel and heat. Biomass has been used for thousands of years and there are many forms available which are used in a number of ways. For example, in a wood fire the wood that is burning is a biomass fuel. Biomass is also used in building materials, composting and as in Drax’s case in the electricity industry. The materials that Drax use include sustainable wood-based products, forestry residues and residual agricultural products, such as sunflower seed husks and peanut husks.

Principle:

Biogas is produced as a result of anaerobic fermentation of biomass in the presence of water.

Construction Back to Top

The biogas plant is a brick and cement structure having the following five sections:

Mixing tank present above the ground level.Inlet chamber: The mixing tank opens underground into a sloping inlet chamber.Digester: The inlet chamber opens from below into the digester which is a huge tank with a dome like ceiling. The ceiling of the digester has an outlet with a valve for the supply of biogas.Outlet chamber: The digester opens from below into an outlet chamber.Overflow tank: The outlet chamber opens from the top into a small over flow tank.