微塑料对城市生活垃圾有机组分降解产甲烷的影响  

Solid waste disposal,risk and management-Effect of microplastics on methane production from organic components of municipal solid waste(MSW)

作　　者：倪仁杰 洪文清 郑子豪 孙安逸 宋立岩 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)

机构地区：[1]安徽大学资源与环境工程学院,安徽合肥230601

出　　处：《中国环境科学》2024年第10期5687-5695,共9页China Environmental Science

基　　金：国家自然科学基金资助项目(51878642)。

摘　　要：通过实验室反应器模拟实验分析了不同化学组分(聚乙烯和聚丙烯)和浓度(20,40,80个/g聚乙烯)的微塑料暴露水平对填埋场生活垃圾有机组分降解产甲烷(CH_(4))的影响.结果表明:微塑料暴露会显著(P<0.01)影响降解过程中总有机碳含量,其变化范围为-18.03%~22.65%;微塑料暴露会显著(P<0.01)促进降解过程水解酸化阶段乙酸的积累,平均增加了19.09%;微塑料暴露显著(P<0.01)抑制CH_(4)的产生和积累,累积产量减少21.38%~46.56%;不同化学组分的微塑料暴露均显著(P<0.01)影响CH_(4)的产量,聚乙烯微塑料浓度对CH_(4)的产量无显著影响.The effects of microplastic exposure levels of different chemical components(polyethylene and polypropylene)and concentrations(20,40,80/g polyethylene)on the methane(CH_(4))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 CH_(4),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 CH_(4)production,and the concentration of polyethylene microplastics had no significant effect on the CH_(4)production.

关 键 词：微塑料 生活垃圾填埋场 甲烷 影响 

分 类 号：X705[环境科学与工程—环境工程]