Question

Why is biogas considered a clean fuel?

Answer 1

Biogas: Biogas is produced by the degradation of biomass like animal waste, plant waste, and human waste in a container in the absence of air.

Constituents: Biogas comprises two major gases: methane and carbon dioxide. Carbon dioxide usually constitutes 25%, and methane constitutes 75% of the biogas. The other constituents are the gases like hydrogen and nitrogen.

Explanation: The reasons behind considering biogas a clean fuel are listed below.

• Biogas is a clean fuel and does not emit any smoke when burnt.
• Unlike coal which produces ash in large amounts, biogas is ash-free and is clean.
• The biogas plant uses waste to produce energy. Thus, there is proper waste management.