Journal
SUSTAINABILITY
Volume 15, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/su15097125
Keywords
Bangalore; biodegradable; carbon stored; municipal solid waste; landfill
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Quantities of waste are increasing daily, with most disposed through open dumps and landfilling. Landfills produce major greenhouse gases, with methane having a global-warming potential 21 times higher than carbon dioxide. This study aims to estimate carbon storage in municipal solid waste (MSW) burial at Mavallipura landfill, finding an increase in carbon stored with depth. Additionally, the study quantifies methane-gas production from the ward levels and the Mavallipura landfill site in India.
Quantities of waste generation are drastically increasing every day, and most of the waste is disposed of through open dumps and landfilling. Methane, carbon dioxide, and nitrous oxide are major greenhouse gases (GHGs) produced from landfill sites. However, the global-warming potential of methane is 21 times higher than that of carbon dioxide. Hence, there is immense concern for its utilization from landfill sites. In developing countries, the composition of municipal solid waste (MSW) has high amounts of biodegradable waste (50-60%). This leads to higher emissions of GHGs a per ton of MSW compared to the developed world. In this study, the attempt will be made to estimate the amount of carbon stored in MSW burial in landfills. Tests were conducted in two different locations at the Mavallipura landfill. MSW samples were collected for every meter interval (1-2 m, 2-3 m and so on) up to 6 m. The result shows that carbon stored in organic matter increases with depth from approximately 2.2% at 1.0 m depth to 4.8% at 6 m depth. Based on MSW's carbon storage factor and data on MSW generation, global carbon sequestration from MSW burial in the Mavallipura landfill is estimated to be at least 10 million metric tons per year. In additional, the study aims to quantify methane-gas production from the ward levels and the Mavallipura landfill site in India.
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