Minimisation of N2O emissions from a plant-soil system under landfill leachate irrigation

A comparison of CH4, N2O and CO2 emissions from three different cover types in a municipal solid waste landfill

“…The extensive studies that have been done on GHG release from soils have shown that CH 4 fluxes varied temporally and spatially (Raco et al, 2010;Monster et al, 2015), while the cover soils at some closed landfills can become CH 4 sinks (Boeckx et al, 1996). Landfill gas (LFG) that escapes through the soil layer is the result of complex biochemical processes, including methane oxidation, nitrification, and denitrification (Zhang et al, 2008;Zhang et al, 2009). Therefore, both environmental factors and intrinsic soil properties exert interrelated effects on the production and reduction of LFG emitted from the landfill surface (Zhang et al, 2013).…”

N2O emission from a combined ex-situ nitrification and in-situ denitrification bioreactor landfill

“…Landfill is one of the major anthropogenic sources of N 2 O emission, which makes up about 3% of the total greenhouse warming potential (Rinne et al, 2005). Previous studies by Zhang et al (2008Zhang et al ( , 2009) indicated that leachate irrigation would promote N 2 O emission from landfill cover soil, owing to the regulation of soil moisture and the supply of organic carbon and mineral nitrogen for nitrifier and denitrifier activities. The biodegradation degree of MSW would influence the N 2 O production, as Chen et al (2009) reported that aged refuse produced more N 2 O than fresh refuse when nitrate was added into the waste mass due to the relatively low denitrification capacity of aged refuse.…”