Utilisation of Municipal Solid Waste Compost as landfill cover soil for reducing greenhouse gas emission
Municipal Solid Waste Compost (MSW-C) was introduced for improving landfill cover soil properties and enhancing methane oxidation. The landfill cover soil was irrigated with leachate for maintaining appropriate moisture content for methane oxidation reaction. It was found that MSW-C was an effective landfill cover material for landfill gas emission control exhibiting the highest Methane Oxidation Rate (MOR). It gave upto 90% methane oxidation efficiency over 260 days under leachate irrigation. MSW-C provided the proper environment for methanotrophic activity through adequate oxygen diffusion into the cover soil due to its loose texture while also supplementing nutrients for methane-oxidising bacteria.
Keywords: municipal solid waste, solid waste compost, composting, MSW-C, landfill cover soil, methane oxidation, greenhouse gas, landfill gas, gas emission control, leachate irrigation