The common gases released in biogas plant and anaerobic sludge digester of sewage treatment plants areA. CO2 B. H2 C. H2S D. CH4
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a
B and C
b
C and D
c
A and D
d
A and C
answer is C.
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Detailed Solution
In anaerobic sludge digester of sewage treatment plant there is release of carbon dioxide, hydrogen sulphide and methane. In Biogas plant there is release of carbon dioxide, hydrogen and methane.