Abstract

Landfill gas is an interesting source of prime energy since it contains about 50–55% volume methane. Utilization, however, must take into account the traces of halogenated hydrocarbons and H 2S, which are present in the gas. The paper reports of two years experience with a pilot plant for the production of a gas with natural gas quality. Essentially the process consists of two stages, an adsorption for the separation of the trace components and a membrane unit for the separation of CO 2. The process is discussed in detail and compared with alternatives for the utilization of landfill gas such as power generation by gas engines/generator, eventually in combination with a waste heat boiler.

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