What gases are produced in anaerobic sludge digesters?

What gases are produced in anaerobic sludge digesters?

Options

(a) Methane and CO2
(b) Methane, Hydrogen Sulphide and CO2
(c) Methane, Hydrogen Sulphide and C0
(d) Hydrogen Sulphide and C0 2

Correct Answer:

Methane, Hydrogen Sulphide and CO2

Explanation:

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