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Journal of Applied Sciences
Year: 2010  |  Volume: 10  |  Issue: 15  |  Page No.: 1603 - 1609

Estimation of Methane Emission from Landfills in Malaysia using the IPCC 2006 FOD Model

M.F.M. Abushammala, N.E.A. Basri, H. Basri, A.A.H. Kadhum and A.H. El-Shafie    

Abstract: Decomposition of municipal solid waste in landfills under anaerobic conditions produces gas containing approximately 50-60% methane (CH4) and 30-40% carbon dioxide (CO2) by volume. CH4 is one of the most important greenhouse gases because its global warming potential is more than 21 times CO2, which has adverse effects on the environment and human life. The CH4 emission from landfills is continually increasing due to increasing population growth and per capita waste generation. This study attempted to assess, in quantitative terms, the amount of CH4 that would be emitted from landfills in Malaysia over the years 1981-2024 using the Inter-governmental Panel on Climate Change 2006 First Order Decay Model. Furthermore, it tends to assess the effects of landfill gas collection system and waste recycling on CH4 emission. In order to attain accurate CH4 emission estimation, waste generation estimation over the years 1981-2024 were performed in two scenarios. Each scenario was used by the model to estimate CH4 emission either taken into account CH4 capturing amounts and increasing waste recycling over the study period or not, to evaluate their effect on CH4 emission reductions. Based on this, global CH4 emission in 2024, included 1,078 and 1,365 Gg CH4 emission reduction from the emission estimated using the first and the second waste generation scenarios, respectively, which indicated that increasing landfill gas collection system projects and amount of waste recycling provide greatest potential for controlling CH4 emission from landfills.

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