Questions:- (1)A farmer with 50 pigs proposed to use biogas generated from their wastes to power his motor car that uses 4 litres of petrol per day. (a) Discuss the feasibility of doing this. You should calculate both the energy content of gas and the energy used in compressing the gas to a usable volume, and compare these with the energy required to run the car. (b) Briefly comment on what other benefits (if any) he might gain by installing a digester. You may assume that a 100 kg pig excretes about 0.5kg of volatile solids (VS) per day (plus 6 kg water), and that 1 kg of VS yields 0.4m3 of biogas at STP.

General Chemistry - Standalone book (MindTap Course List)
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
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Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.142QP
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ENRUT/p
9.65 m3. (9.31)
Questions:-
(1)A farmer with 50 pigs proposed to use biogas generated from their wastes to power his motor car that uses 4 litres of petrol per day.
(a) Discuss the feasibility of doing this. You should calculate both the energy content of gas and the energy used in compressing the gas
to a usable volume, and compare these with the energy required to run the car. (b) Briefly comment on what other benefits (if any) he
might gain by installing a digester. You may assume that a 100 kg pig excretes about 0.5kg of volatile solids (VS) per day (plus 6 kg
water), and that 1 kg of VS yields 0.4m3 of biogas at STP.
Transcribed Image Text:ENRUT/p 9.65 m3. (9.31) Questions:- (1)A farmer with 50 pigs proposed to use biogas generated from their wastes to power his motor car that uses 4 litres of petrol per day. (a) Discuss the feasibility of doing this. You should calculate both the energy content of gas and the energy used in compressing the gas to a usable volume, and compare these with the energy required to run the car. (b) Briefly comment on what other benefits (if any) he might gain by installing a digester. You may assume that a 100 kg pig excretes about 0.5kg of volatile solids (VS) per day (plus 6 kg water), and that 1 kg of VS yields 0.4m3 of biogas at STP.
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