Abstract: Estimates of methane (CH4) oxidation rates (Rg) in biocovers are
crucial for development of abatement strategies. Rg values were estimated
in a landfill biocover with a simple approach based on gas diffusion theory.
Rg 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 O2
concentration > 0.1 kg m–3. Rg was correlated to oxidation efficiency measured
by stable isotopes and surface emissions. The approach allows for affordable
continuous monitoring of Rg, but only gives a rough estimate of CH4 oxidation