Question

Mixture of biogas contains

• A. Carbon dioxide, nitrogen and methane
• B. Nitrogen, methane and hydrogen
• C. Methane, carbon dioxide and carbon monoxide
• D. Hydrogen, butane and carbon dioxide

Answer 1

The correct option is A Carbon dioxide, nitrogen and methane

Biogas consists primarily of methane (the source of energy within the fuel) and carbon dioxide. It also may contain small amounts of nitrogen or hydrogen. Contaminants in the biogas can include sulphur or siloxanes but this will depend upon the digester feedstock.