Quantification of methane emissions from 15 Danish landfills using the mobile tracer dispersion method

摘要: Abstract Whole-site methane emissions from 15 Danish landfills were assessed using a mobile tracer dispersion method with either Fourier transform infrared spectroscopy (FTIR), nitrous oxide as gas, or cavity ring-down spectrometry (CRDS), acetylene gas. The chosen to represent the different stages of lifetime landfill, including open, active, and closed covered landfills, well those without gas extraction for utilisation flaring. Measurements also included biocover oxidizing any fugitive methane. Methane emission rates ranged 2.6 60.8 kg h−1, corresponding 0.7–13.2 g m−2 d−1, largest per area coming malfunctioning systems installed, smallest decades ago an engineered installed. Landfills collection recovery had efficiency 41–81%. where shredder waste was deposited showed significant emissions, newly waste. average 154 tons y−1. This obtained few measurement campaigns conducted at each extrapolating annual requires more measurements. Assuming that these are representative total calculated 20,600 tons y−1, which is significantly lower than 33,300 tons y−1 estimated national greenhouse inventory 2011.