Question

Write the name of the main constituent of biogas. Also, state its percentage.

Answer 1

Biogas :

• Biogas is a renewable, ecological-favorable energy source.
• It is created when microbes break down organic matter, like food or animal manure, in the absence of oxygen, through a process known as anaerobic digestion.

Constituents of biogas:

• Biogas is primarily composed of methane(${\mathrm{CH}}_4$) and carbon dioxide$\left({\mathrm{CO}}_2\right)$.
• It may also contain trace levels of Hydrogen sulfide$\left({\mathrm{H}}_2\mathrm{S}\right)$, siloxanes, and moisture.
• The proportion amounts of these vary on the basis of the type of waste used in the biogas production process.
• The percentage of methane is around $50-75\%$ while the percentage of carbon dioxide is around $25-50\%$.