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Calculation of CH4 and CO2 Emission Rate in Kahrizak Landfill Site with Land GEM Mathematical Model
1 , 2 , * 3
1  Department of Energy Engineering, Graduate School of the Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran
2  Department of Mechanical Engineeringof Pardis Islamic Azad University
3  Department of Renewable Energies, Faculty of New Science and Technologies, University of Tehran, Tehran, Iran

Published: 03 November 2014 by MDPI in The 4th World Sustainability Forum session Energy Sustainability
Abstract: Emitted gasses from the landfills are one of thesignificant sources of air pollution in Iran. Meanwhile, the reduction, controland recycling of such gasses is of great importance from hygienic and globalperspectives. Kahrizak landfill site has been a dumping place for the past 40years. The average amount of wastes disposed at the site is approximately 7000 Tons per day. The purpose of this study iscalculation CH4 (Methane) and CO2 (Dioxide carbon) emissionsand estimate the carbon reduction potential using the Land GEM 3.02 model. Validationof this model was tested by comparing the model estimates with the methane andCO2 recovery rate compiled from the experimental results of Kahrizak landfill between 1994 and 2004. Based on the model results, theCH4 and CO2 emissions between 1992 and 2012 were determinedand sensitivity analysis was performed for various quantities of the decay rate. Through gas-recovery and extracting energy fromlandfills with 75 percent efficiency, the generation rate of greenhouse gaseswill reduce to around 557,633 tons of CO2 equivalent in Iran.
Keywords: Emission; landfill; gas recovery; land GEM; dioxide carbon