Host: Japan Society of Material Cycles and Waste Management
Part of methane generated in waste layer is oxidized at cover soil. Threre were increasing doubt on IPCC default value (0 or 0.1). Oxidation of methane in cover soil is affected by various environmental factors. Therefore, it is recommended to develope site specific oxidation factor. In this study, oxidation factor is estimated using field monitoring results. 14 and 42 samples are collected at vent-pipes and surface, respectively in one MSW landfill in Korea at Apr. 2011. The oxidation factor is estimated based on CH4/CO2 ratio by volume. The oxidation factor showed 0.043 and 0.966 when means and medians are used, respectively. When the one extreme value is ignored, the oxidation factor changed into 0.634 and 0.988 when means and medians are used, respectively. For more accurate oxidation factor, seasonal and temporal variations are needed to be characterized.
