Modeling gaseous emissions and dispersion of two major greenhouse gases from landfill sites in arid hot environment
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RESEARCH ARTICLE
Modeling gaseous emissions and dispersion of two major greenhouse gases from landfill sites in arid hot environment Abdirashid Elmi 1 & Meshari Al-Harbi 1 & Mohamed F. Yassin 2 & Mosaab M. Al-Awadhi 3 Received: 27 May 2020 / Accepted: 18 November 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020, corrected publication 2020
Abstract As waste production exponentially increases, landfill continues to be the common method of waste disposal. Landfills represent significant anthropogenic sources of methane (CH4) and carbon dioxide (CO2); the main constituents of greenhouse gases (GHGs) resultant from microbial decomposition of organic waste. In the present study, ISC-AERMOD dispersion model was employed to estimate the release and dispersion rates of CH4 and CO2 from major landfill sites across Kuwait under different seasonal conditions. Results revealed that dispersions of CH4 and CO2 were influenced by the dominant northwestern and southeastern wind directions and thus, the dispersion of CH4 and CO2 extended predominantly toward northeastern direction. In terms of seasonal variation, the maximum concentrations of CH4 and CO2 were detected in winter and spring seasons, close to the landfill zone, and the dispersion of CH4 and CO2 fluxes during winter and spring seasons was longer than that during summer and fall seasons. Consequently, residential areas close to the disposal sites were exposed to higher concentrations of CH4 and CO2 gases during winter and spring. The findings of this study can serve as the basis for selecting suitable landfill locations under desert climatic conditions as determined by the distances over which gaseous emissions can diffuse. Keywords Air dispersion model . Greenhouse gas emission . Landfill sites . Municipal solid waste
Introduction Due to the ever-growing population in urban areas, and the corresponding increase in waste production, evaluation of waste contribution to greenhouse gases (GHGs) and, consequently, climate change has become a pressing environmental concern. The original article was revised: The correct 2nd sentence of the Abstract is “Landfills represent significant anthropogenic sources of methane (CH4) and carbon dioxide (CO2); the main constituents of greenhouse gases (GHGs) resultant from microbial decomposition of organic waste.”. Responsible Editor: Gerhard Lammel * Abdirashid Elmi [email protected] 1
Department of Environmental Technology Management, College of Life Sciences, Kuwait University, P.O. Box 5969, 13060 Safat, Kuwait
2
Environment & Life Sciences Research Center (ELSRC), Kuwait Institute for Scientific Research (KISR), P.O. Box 24885, 13109 Safat, Kuwait
3
The Public Authority for Applied Education and Training, P.O. Box 23167, 13092 Safat, Kuwait
Global climate change (GCC) can be described as the most serious environmental challenge of the twenty-first century and beyond, with catastrophic environmental and public health impacts. Landfills are a major source of anthropogenic GHGs, chiefly methane (CH4) and carbon
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