Question

The biomass can be used to

• A. Obtain alcohol
• B. Generate biogas
• C. Generate producer gas
• D. All of the above

Answer 1

The correct option is B Generate biogas

Certain kinds of bacteria break down biomass in the absence of oxygen and produce biogas as a waste product. This biological process is called anaerobic digestion. This process occurs naturally in city dumps or landfill sites containing organic wastes. When these materials are buried, they are digested by bacteria, resulting in biogas (landfill gas) rich in methane. This gas can be collected and used to heat buildings, run engines or generate electricity. Biogas can also be produced by mixing plant and animal wastes with water in oxygen-free tanks.