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Emitted gasses from the landfills are one of the significant sources of air pollution in Iran. Meanwhile, the reduction, control and recycling of such gasses is of great importance from hygienic and global perspectives. Kahrizak landfill site has been a dumping place for the past 40 years. The average amount of wastes disposed at the site is approximately 7000 Tons per day. The purpose of this study is calculation CH4 (Methane) and CO2 (Dioxide carbon) emissions and estimate the carbon reduction potential using the Land GEM 3.02 model. Validation of this model was tested by comparing the model estimates with the methane and CO2 recovery rate compiled from the experimental results of Kahrizak landfill between 1994 and 2004. Based on the model results, the CH4 and CO2 emissions between 1992 and 2012 were determined and sensitivity analysis was performed for various quantities of the decay rate. Through gas-recovery and extracting energy from landfills with 75 percent efficiency, the generation rate of greenhouse gases will reduce to around 557,633 tons of CO2 equivalent in Iran.

Calculation of CH4 and CO2 Emission Rate in Kahrizak Landfill Site with Land GEM Mathematical Model