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LANDFILL: Washing Landfill Gas

Published Saturday, April 01, 2000

An emerging technology may potentially provide a new way to slice and dice your landfill gas (LFG) into more marketable products. From Acrion Technologies Inc., Cleveland, the Carbon dioxide, (CO2) Wash removes landfill gas contaminants in a single-step process and produces clean, high-Btu methane (up to 800 Btu/ft[superscript]3) and non-combustible liquid CO2. Contaminated liquid CO2 solvent is not regenerated; it is vaporized and flared to eliminate solvent regeneration. The process converts LFG to various products, including electricity, methanol, pipeline or liquefied methane, or clean, high-Btu fuel. Merchant liquid CO2 can be produced along with the principal Btu product.

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