Abstract
The first investigations on anthropogenic methane (CH4) oxidation and nitrous oxide (N2O) emissions from mineralised refuse after wastewater treatment are reported. The maximum methane oxidation rate (MOR) in the incubated material was 15.48 μmol/g dry weight/h, which was substantially higher than those for the original mineralised refuse or soil. A correlation analysis (P > 0.05) showed that the mean particle size (D50) value, organic matter content, NH4+–N nitrification, and NO3−–N generation rates (P 0.05). Following the addition of distilled water, N2O emissions from the incubated mineralised refuse were almost two times and 1 order of magnitude greater than those of the MOR (P > 0.05) and soil (P > 0.05). The stimulation of N2O emissions from the mineralised refuse could be neglected under the much higher MOR of a municipal solid waste landfill. Because of its high tolerance for environmental factor variations (i.e., soil temperature and water content) and heavy metal addition, mineralised refuse could be used to filter a wide variety of wastewaters to increase the MOR.
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