文献类型：期刊文献

英文题名：Degradation of forward osmosis (FO) membrane in multi-effect distillation (MED) brine: change of transport, physicochemical and anti-fouling properties

作者：Yang, Ye[1];Tang, Rui[1];Sun, Yuzhu[1,2,3];Song, Xingfu[1,3];Yu, Jianguo[1]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[3]Hebei Desalinat Technol Innovat Ctr, Tangshan 063200, Hebei, Peoples R China

年份：2020

卷号：496

外文期刊名：DESALINATION

收录：;EI(收录号：20203809185007);WOS:【SCI-EXPANDED(收录号:WOS:000602420500009)】；

基金：The authors would like to thank the financial support from National Key Research and Development Program (No. 2016YFC0401203, 2019YFC0408204), and Program of Shanghai Academic/Technology Research Leader (No. 18XD1424600).

语种：英文

外文关键词：Forward osmosis; Degradation; Brine; Membrane fouling; XDLVO

摘要：This study investigated the chemical stability of various forward osmosis (FO) after static exposure to multi effect distillation (MED) brine. The water flux, forward salt flux (FSF), and specific reverse salt flux (SRSF) were evaluated to evaluate the membrane performance degradation. The changes in the physicochemical properties of FO membranes were elucidated via characterization techniques including Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), goniometer, and zeta potential analyzer. Moreover, the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) approach was used to predict the changes in the membrane fouling propensity. The results showed that the cellulose triacetate (CTA) membrane suffered deacetylation and chain cleavage due to hydrolysis, whereas the thin-film composite (TFC) membrane experienced degrafting due to oxidation. The selectivity reductions of both membranes were observed according to the increase in FSF and SRSF. Furthermore, the decreasing attractive XDLVO interaction energies of the degraded CTA membrane indicated the improvement of anti-fouling properties. In contrast, the anti-fouling properties of the TFC membrane were severely reduced since the attractive XDLVO interaction energies increased.