Paper 1 · People, Development and Environment
Biogas is a mixture of methane, carbon dioxide and small quantities of other gases produced by anaerobic digestion of organic matter in an oxygen-free environment. This process is called
APelletization
BBio-methanation ✓ Correct
CPyrolysis
DLeachate
Correct answer: (B) Bio-methanation — This process is bio-methanation, so that is the answer.
Explanation
★This process is bio-methanation, so that is the answer.
★Bio-methanation is the anaerobic digestion of organic matter without oxygen.
★It produces biogas, a mixture of methane and carbon dioxide.
★So the process that makes biogas is bio-methanation.
★Pelletization, pyrolysis and leachate are different things.
★So the answer is bio-methanation.
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