Question

 

 Explain the various methods for the treatment of landfill gases.

17 Aug 2025
Answer :
Word Count : 1251
Landfill gas (LFG) is produced during the anaerobic decomposition of organic waste in landfills, primarily consisting of methane (CH₄), carbon dioxide (CO₂), and trace amounts of other gases such as nitrogen, oxygen, hydrogen sulfide, and volatile organic compounds. Since methane is a potent greenhouse gas with a global warming potential many times higher than CO₂, proper management of landfill gases is essential for environmental protection, public health, and safety. The treatment and disposal of landfill gases aim to minimize their harmful impacts, recover energy, and comply with regulatory standards. Various methods are employed for the treatment of landfill gases, each with specific mechanisms, advantages, and limitations. One of the most commonly used methods for landfill gas management is gas collection and flaring. In this process, gas is extracted from the landfill using a network of wells and pipes. Vertical or horizontal wells are installed throughout the landfill to collect the gas generated in the waste mass. These wells are connected to a vacuum system or blower that ensures continuous extraction of the gases. Once collected, the landfill gas can be combusted in a flare system. Flaring converts methane to carbon dioxide and water, significantly reducing the greenhouse effect since CO₂ has a lower global warming potential than methane. _________ ____ __________ ____ ____ ________ ___ _____ ________.
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