Inderscience Publishers

Evaluation of methane oxidation in a landfill cover material using a simple indicator approach

0
Estimates of methane (CH
4
) oxidation rates (R
g
) in biocovers are crucial for development of abatement strategies. R
g
values were estimated in a landfill biocover with a simple approach based on gas diffusion theory. R
g
varied from 0 to 1.1 × 10
−6
kg m
−3
s
−1
. Highest oxidation efficiencies reached 80-100% when soil water content < 40%, temperature > 20°C and O
2
concentration > 0.1 kg m
−3
. R
g
was correlated to oxidation efficiency measured by stable isotopes and surface emissions. The approach allows for affordable continuous monitoring of R
g
, but only gives a rough estimate of CH
4
oxidation rate.

Keywords: gas diffusion, gas movement, oxygen, waste management, temporal variation, compost, landfill biocover, methanotrophic oxidation, landfill cover, methane oxidation, moisture content

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