Question:
A sudden drop in methane content with increased \(H_2S\) in biogas suggests dominance of
A sudden drop in methane content with increased \(H_2S\) in biogas suggests dominance of
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Competition in anaerobic digesters:
\[
\boxed{
\text{Sulphate reducers}
\rightarrow
H_2S \uparrow
\rightarrow
CH_4 \downarrow
}
\]
An increase in \(H_2S\) generally indicates dominance of sulphate-reducing bacteria.
Updated On: Jul 18, 2026
- Methanogens
- Sulphur oxidizers
- Sulphate reducers
- Nitrifiers
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Sulphate-reducing bacteria compete with methanogens for substrates in anaerobic digesters.
They reduce sulphate to hydrogen sulphide \((H_2S)\), leading to increased \(H_2S\) production and decreased methane yield.
Hence,
\[
\boxed{\text{Sulphate reducers}}
\]
is the correct answer.
Therefore,
\[
\boxed{(C)}
\]
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