Introduction of compost as landfill cover soil with vegetation practice successfully promoted
and maintained methane oxidation efficiency of 80-90% for long-term operation (over 16
months). Compost clearly encouraged for higher methane oxidation according to the beneficial
properties of compost, high porosity and water holding capacity. Furthermore, vegetation was
also revealed its advantage on sustaining methane oxidation almost throughout soil depth.
Plant roots helped transport action of oxygen from the atmosphere into the deeper zone, and
also produced and then released exudates to the root zone which beneficially supported as
nutrient supplement for methanotrophic bacteria and their activity as evidenced by
determination of methanotrophic population. Moreover, leachate irrigation was also practiced
for minimizing methane from landfill as well as contaminants in leachate. However some
ammonium in leachate inhibited methane oxidation in sandy loam, but some stimulatory effect
was found in the compost. These operations were the alternative approach for controlling
emission, methane gas mainly, from the landfill especially in developing countries.