Transport mechanisms and emission of landfill gas through various cover soil configurations in an MSW landfill using a static flux chamber technique.

This study evaluated the transport mechanisms and emission rates of landfill gas (LFG) from 200- (vegetated with short grass), 300- (vegetated with short grass), and 450-mm-thick (non-vegetated) interim cover soils within a municipal solid waste landfill. LFG emission and diffusion mechanisms were evaluated using static flux chambers and laboratory-scale diffusion columns. Overall, the greatest CH and CO emissions were consistently observed from the 200-mm-thick cover soil with an average flux rate of 39.