Question

Which of the following is a use of biogas produced in anaerobic sludge digesters?

Options

• Source of energy

• Direct release into water bodies

• Fertilizer for plants

• Disinfectant for treated effluent

Answer 1

During digestion in anaerobic sludge digesters, a mixture of gases including methane (CH₄), hydrogen sulphide (H₂S), and carbon dioxide (CO₂) is produced. These gases collectively form biogas, which can be utilized as a source of energy.