Question

Landfill Gas Recovery is a technology of recovering gas from waste dumps wherein the waste slowly decomposes to produce ‘Landfill gas’.Which of the following statements is/are correct about Landfill Gas?

• A. 1 & 2 only
• B. 1 & 3 only.
• C. 2 & 3 only.
• D. 1, 2 & 3 only

Answer 1

The correct option is C

2 & 3 only.

Landfill gas is a complex mix of different gases created by the action of microorganisms within a landfill. Landfill gas is approximately forty to sixty percent methane, with the remainder being mostly carbon dioxide.

Landfill gases are the result of three processes.

• evaporation of volatile organic compounds (e.g., solvents)
• chemical reactions between waste components
• microbial action, especially methanogenesis.
• The landfill gas can be utilized directly on site by a boiler or any type of combustion system, providing heat. Electricity can also be generated on site through the use of microturbines, steam turbines, or fuel cells