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Title: Landfill Gas Recovery With Membrane Technology
Author: John Van Bladeren
Source: American Gas Association 1986
Year Published: 1986
Abstract: BioGas Technology, Inc., a wholly-owned subsidiary of Northwest Natural Gas Company, was organized in 1984. Its business is to develop landfill gas recovery projects on a nationwide basis. Essentially, the operation consists of collecting the methane being generated in a landfill through a gathering system. The methane is then compressed, cleaned up, and the CO2 is separated out through the use of membrane technology. For general information, one may assume that for every million (ons of garbage in place, one can recover approximately 0.1 to 0.15 BCF per year of pipeline quality gas, The recently developed semi-permeable membrane process technology requires less maintenance and has lower first costs than other process alternatives. The membranes are designed to efficiently remove some 95% of the CO, from the collected gas, leaving a product with 90-95% methane, the plants are designed for semi-automatic and remotely controlled operation, the compact design requires less than one acre of space, compressors are slow-speed, heavy duly models designed to operate continuously for years at minimum expense, an overall layout is shown in Figure 1.

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