What is biomass? In the context of energy production, biomass is any organic matter from which we can get energy on a renewable basis.
It includes agricultural residues, wood, animal excreta, wastes from food processing and municipal wastes. Agricultural residues include straw, hay and husk. Waste from food processing includes bagasse, which is the residue left after extracting the juice from sugar cane. Cow dung (gobar) has been a traditional biomass fuel in our country. Since plants trap solar energy in the form of food, and animals eat plants, the ultimate source of biomass energy is the sun
Wood has been a major source of energy since man discovered fire. It is still used widely as a fuel for cooking and heating. In many Indian homes, food is cooked on stoves that use biomass fuels such as wood. Such a stove is called a chulha. A traditional chulha operates at a very low efficiency. Hardly 10% of the energy contained in the wood is utilized. Also, it does not burn the wood completely, which causes a lot of smoke. Indian scientists have designed several 'smokeless' chulhas. These produce much less smoke, and the fuel is more efficiently utilized.
Which of the following are correct ? (a) The bacteria decomposes wet biomass in an oxygen-free anaerobic environment to produce a combustible mixture of gases, called biogas. (b) Biogas can contain up to 75% methane, 23% carbon dioxide and 2% other gases, including hydrogen and hydrogen sulphide. (c) Charcoal produces much less smoke than wood. | |||
Right Option : D | |||
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Biogas can be produced in a biogas plant by using ________________. | |||
Right Option : D | |||
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The reason why charcoal is a better fuel than wood ______________ | |||
Right Option : D | |||
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A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.