Question

Raju an agriculture student visited his grandparents, who were living in a remote village of Bihar. There he saw many women making cow dung cakes and then burning these cakes to cook food. He suggested that the villagers should set up a gobar gas plant. His grandparents supported him and together they built a gobar gas plant.(a) What are the harmful effect of using cow dung cakes?
(b) Why do you think Raju insisted on setting up a gobar gas plant?
(c) What values are exhibited by Raju and his grand parents?
(d) Why is cowdung used in this?

Answer 1

(a) using cow dung as cooking fuel could expose people to arsenic.
(b) because of advantages of Biogas as it is a green energy source in form of electricity and heat for the local grid. Considerable environmental advantages - less emission of the greenhouse gasses methane, CO2 and nitrous oxide. Environmentally friendly recirculation of organic waste from industry and households.
(c) effective intelligence and concern abut his family as well as aware to save nature
(d) The waste generated from kitchen and sewage from the hostels is given as feedstock to produce 600 m3 ofbiogas per day with cow dung as byproduct. The methane gas generated from Biogas is purified and this is used for power generation. ... This power is used for backup power for girl's hostel lighting load.



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