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| Solid waste disposal, risk and management —Effect of microplastics on methane production from organic components of municipal solid waste (MSW) |
| NI Ren-jie, HONG Wen-qing, ZHENG Zi-hao, SUN An-yi, SONG Li-yan |
| School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China |
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Abstract The effects of microplastic exposure levels of different chemical components (polyethylene and polypropylene) and concentrations (20, 40, 80/g polyethylene) on the methane (CH4) production through organic fractions of solid waste decomposition were investigated in batch series of simulated bioreactors. Results show that microplastic exposure significantly (P<0.01) affected the total organic carbon content in the degradation process, which varied from -18.03% to 22.65%; microplastics exposure significantly (P<0.01) promoted the accumulation of acetic acid in the hydrolysis and acidification stage of the degradation process, with an average increase of 19.09%; microplastic exposure significantly (P<0.01) inhibited the production and accumulation of CH4, and the cumulative yield decreased by 21.38% to 46.56%; the exposure of different chemical components of microplastics significantly (P<0.01) affected the CH4 production, and the concentration of polyethylene microplastics had no significant effect on the CH4 production.
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Received: 05 March 2024
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