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Publisher DOI: 10.3390/su13010151
Title: Environmental sustainability enhancement of waste disposal sites in developing countries through controlling greenhouse gas emissions
Language: English
Authors: Ihsanullah, Sohoo  
Ritzkowski, Marco 
Kuchta, Kerstin 
Önen Cinar, Senem 
Keywords: environmental sustainability; greenhouse gas; waste disposal sites; methane; landfill; in-situ aeration; MSW; developing countries; Karachi
Issue Date: 1-Jan-2021
Publisher: Multidisciplinary Digital Publishing Institute
Source: Sustainability 13 (1): 151 (2021-0101)
Abstract (english): 
Sustainable management of municipal solid waste is one of the major challenges for authorities in developing countries. Current waste disposal methods in Pakistan and other developing countries are not meeting standards of any proper waste management system opted for in the developed world. This mismanagement of waste is leading to serious environmental problems at local as well as global levels. This study aims to investigate the methane emissions from waste dumpsites in the city of Karachi, Pakistan, and to propose an effective approach to enhance their environmental sustainability. The methane emissions from waste disposal sites were assessed by simulating four different landfill situations during the landfill simulation reactor experiment. The residual methane reduction potential of each waste disposal approach was assessed by a biochemical methane test of waste after the experiment. It is estimated that in the present situation, about 11,500 tons of CO2-eq methane is released annually from waste disposal sites in Karachi. The convectional anaerobic landfill with methane capturing facilities and post-aeration operation was found to be the most environmentally sustainable approach with controlling 65% of residual methane emissions in comparison with the present scenario. For the development of new landfill sites, we recommend the bioreactor landfill approach with methane recovery and post-care (in-situ aeration).
DOI: 10.15480/882.3252
ISSN: 2071-1050
Journal: Sustainability 
Other Identifiers: doi: 10.3390/su13010151
Institute: Umwelttechnik und Energiewirtschaft V-9 
Document Type: Article
Project: Publikationsfonds 2020 
Funded by: Higher Education Commission 
License: CC BY 4.0 (Attribution) CC BY 4.0 (Attribution)
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