Effects of water matrix on the rejection of neutral pharmaceutically active compound by thin-film composite nanofiltration and reverse osmosis membranes

被引:9
作者
Shah, Izaz Ali [1 ]
Ali, Sharafat [1 ,2 ]
Yang, Zhe [3 ]
Ihsanullah, Ihsanullah [4 ]
Huang, Haiou [1 ,5 ]
机构
[1] Beijing Normal Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, 19 Xinjiekouwai St, Beijing 100875, Peoples R China
[2] Univ Waterloo, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada
[3] Univ Hong Kong, Dept Civil Engn, Pokfulam Rd, Hong Kong, Peoples R China
[4] King Fahd Univ Petr & Minerals, Ctr Environm & Water, Res Inst, Dhahran 31261, Saudi Arabia
[5] Johns Hopkins Univ, Bloomberg Sch Publ Hlth, Dept Environm Hlth & Engn, 615 North Wolfe St, Baltimore, MD 21205 USA
关键词
Membrane-based separations; Reverse osmosis; Nanofiltration; Pharmaceuticals; Polyamide membranes; Thin-film composites; ENDOCRINE DISRUPTING COMPOUNDS; ORGANIC CONTAMINANTS; COMPOUNDS PHACS; REMOVAL; MICROPOLLUTANTS; RO; NF; ULTRAFILTRATION; MECHANISM;
D O I
10.1016/j.chemosphere.2022.135211
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Thin-film composite (TFC) nanofiltration (NF) and reverse osmosis (RO) membranes have been widely used to remove pharmaceutically active compounds (PhACs) from water and wastewater. However, limited information is available to present the rejection of neutral PhACs under complex water matrices. In this study, we used acetaminophen (AAP) as a representative neutral pollutant to study the effects of feedwater matrices on the rejection of neutral PhACs by NF and RO membranes. The results showed that the permeation of solutes and water through NF and RO membranes followed the classical solution-diffusion model. The corresponding permeability coefficients of AAP for the RO membrane showed good consistency, with average values ranging between (6.19-7.56) x 10-6 mu m s- 1 in fresh and brackish feedwater. Meanwhile, the NF membrane exhibited stable AAP and NaCl fluxes as the applied pressure increased from 4.8 to 7.6 bar, suggesting an insignificant influence of convection on solute transport. In addition, a 10-fold increase in NaCl concentration reduced the average AAP permeability coefficient of the NF membrane by 57% (i.e. from 2.8 x 10-5 m s-1 to 1.2 x 10-5 m s-1), highlighting the relevance of co-existing ions to AAP transport. Furthermore, organic fouling resulted in enhanced AAP rejection by both NF and RO membranes at neutral pH level and medium applied pressure (i.e.
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页数:11
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