文献类型：期刊文献

英文题名：Rainfall Influences Occurrence of Pharmaceutical and Personal Care Products in Landfill Leachates: Evidence from Seasonal Variations and Extreme Rainfall Episodes

作者：Yu, Xia[1];Sui, Qian[1,5];Lyu, Shuguang[1,5];Zhao, Wentao[2];Wu, Dongquan[1];Yu, Gang[3];Barcelo, Damia[4]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China;[3]Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China;[4]Catalan Inst Water Res ICRA, Girona 17003, Spain;[5]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2021

卷号：55

期号：8

起止页码：4822

外文期刊名：ENVIRONMENTAL SCIENCE & TECHNOLOGY

收录：;EI(收录号：20211810291770);WOS:【SCI-EXPANDED(收录号:WOS:000643546400062)】；

基金：This work was partly supported by the National Natural Science Foundation of China (21777042, 22076045, 21577033), the Major Science and Technology Program for Water Pollution Control and Treatment in China (2017ZX07202006), the Fundamental Research Funds for the Central Universities, and Beijing Key Laboratory for Emerging Organic Contaminants Control, the project supported by Shanghai talent development funding.

语种：英文

外文关键词：Leachate treatment - Municipal solid waste - Hydrophilicity

摘要：Unused or expired pharmaceutical and personal care products (PPCPs) are usually discharged into municipal solid wastes, then travel to landfills, and eventually percolate into leachates. However, knowledge of their occurrence and temporal dynamics in leachates is limited, making landfill leachate an underappreciated emission source of PPCPs. Furthermore, the differences in PPCP variations in landfill leachates emphasize the necessity for identifying the influencing factors and elucidating the mechanisms for PPCP fluctuations. In this study, successive monthly monitoring of PPCPs in leachates throughout an entire year was performed to determine their seasonal variations and identify their influencing factors. Furthermore, five pairs of additional sampling campaigns were conducted before and after rainfall events during wet seasons to elucidate the influencing mechanisms. The results showed that there was a distinct seasonal variation in PPCPs in landfill leachates-elevated levels during the wet period (from April to September, with a mean concentration of 17.0 mu g/L for total monitored PPCPs)-when compared to other months (mean concentration of 3.8 mu g/L). Rainfall played a considerable role in mediating PPCP concentrations in leachates. The PPCP responses to five rainfall episodes further verified the influence of rainfall and demonstrated that the tendency to PPCP concentration increase was related to rainfall precipitation. Torrential rain events (i.e., 24 h cumulative precipitation of 50-99.9 mm) led to the most significant increases in PPCP concentrations in landfill leachates. In addition, the hydrophilicity of PPCPs contributed to the different fluctuations during the 1 year investigation and different responses to rainfall. To the best of our knowledge, this study provides the first direct evidence supporting the influence of rainfall on PPCPs in landfill leachates, which can help better understand the occurrence and behavior of emerging contaminants in this underappreciated emission source.