Abstract
Solid waste characteristics and landfill gas emission rate in tropical landfill was investigated in this study. The experiment was conducted at a pilot landfill cell in Thailand where fresh and two-year-old wastes in the cell were characterized at various depths of 1.5, 3, 4.5 and 6 m. Incoming solid wastes to the landfill were mainly composed of plastic and foam (24.05%). Other major components were food wastes (16.8%) and paper (13.3%). The determination of material components in disposed wastes has shown that the major identifiable components in the wastes were plastic and foam which are resistant to biodegradation. The density of solid waste increased along the depth of the landfill from 240 kg m−3 at the top to 1,260 kg m−3 at the bottom. Reduction of volatile solids content in waste samples along the depth of landfill suggests that biodegradation of solid waste has taken place to a greater extent at the bottom of the landfill. Gas production rates obtained from anaerobic batch experiment were in agreement with field measurements showing that the rates increased along the depth of the landfill cell. They were found in range between 0.05 and 0.89 l kg−1 volatile solids day−1. Average emission rate of methane through the final cover soil layer was estimated as 23.95 g−2day−1 and 1.17 g−2day−1 during the dry and rainy seasons, respectively.
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Chiemchaisri, C., Chiemchaisri, W., Kumar, S. et al. Solid waste characteristics and their relationship to gas production in tropical landfill. Environ Monit Assess 135, 41–48 (2007). https://doi.org/10.1007/s10661-007-9706-2
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DOI: https://doi.org/10.1007/s10661-007-9706-2