First slide

Microbes in Sewage Treatment

Question

During sewage treatment, biogas is produced which includes

Easy

A

hydrogen sulphide, methane, sulphur dioxide
B

hydrogen sulphide, nitrogen, methane
C

methane, hydrogen sulphide, carbon dioxide
D

methane, oxygen, hydrogen sulphide.

Solution

In anaerobic sludge digestor, bacteria produce a mixture of gases such as methane, hydrogen sulphide and carbon dioxide. These gases form biogas and can be used as source of energy as it is inflammable.

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