文献类型：期刊文献

英文题名：Removal of antibiotics and estrogens by nanofiltration and reverse osmosis membranes

作者：Yang, Linyan[1,2,3];Xia, Caiping[3];Jiang, Jielun[3];Chen, Xueming[4];Zhou, Yanbo[1,2,3];Yuan, Cheng[3];Bai, Lichun[5];Meng, Shujuan[6];Cao, Guomin[1,2,3]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[3]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[4]Fuzhou Univ, Coll Environm & Resources, Fujian Prov Engn Res Ctr Rural Waste Recycling Tec, Fuzhou 350116, Fujian, Peoples R China;[5]Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Peoples R China;[6]Beihang Univ, Sch Space & Environm, Beijing 100191, Peoples R China

年份：2024

卷号：461

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20234014830775);WOS:【SCI-EXPANDED(收录号:WOS:001092030100001)】；

基金：This study was sponsored by National Key R &D Program [grant number 2019YFC0408202] , National Natural Science Foundation of China [grant number 52100085] , and Natural Science Foundation of Shanghai [grant number 21ZR1418000] .

语种：英文

外文关键词：Antibiotics; Estrogens; Nanofiltration; Reverse osmosis; Rejection mechanism

摘要：The separation behavior of a variety of emerging contaminants, including nine antibiotics and six estrogens commonly reported in natural environment, by four commercial nanofiltration and reverse osmosis (NF/RO) membranes at various water conditions (pH, concentration) was investigated. The contaminant rejection at pH 6.0 followed a decreasing trend of XLE (94%-100%) approximate to NF90 (88%-100%) > NF270 (25%-85%) > DL (16%-75%). The dense structures of NF90 and XLE reflected by their small effective pore radii (0.30-0.31 nm) contributed mainly to their high rejection, demonstrating the important role of size exclusion. For the negatively charged loose NF270 and DL membranes (0.40-0.45 nm), charge repulsion made additional contribution, which is markedly reflected by their greater rejection to charged antibiotics than neutral estrogens (45%-85% vs. 25%-60% by NF270). The correlation between rejection data and normalized molecular sizes at pH 4.0 and 9.0 intuitively demonstrated the individual role of size exclusion and charge repulsion. The adsorption by membranes was mainly responsible for the initial compound reduction in feedwater by 6%-25% within 3 h, while only 0.3%-5.6% was attributed to self-degradation. The adsorption capacity was determined, which might be mainly governed by hydrophobic interaction. The resolved controlling factors and mechanisms will contribute to the accurate prediction and membrane selection for trace contaminant removal by membrane process.