文献类型：期刊文献

英文题名：Ion exchange resin blended membrane: Enhanced water transfer and retained salt rejection for forward osmosis

作者：Zuo, Hao-Ran[1];Lu, Hui[1];Cao, Gui-Ping[1];Wang, Meng[1];Wang, Yi-Ying[1];Liu, Jing-Man[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, UNILAB, Shanghai 200237, Peoples R China

年份：2017

卷号：421

起止页码：12

外文期刊名：DESALINATION

收录：;EI(收录号：20171803636593);WOS:【SCI-EXPANDED(收录号:WOS:000412608700003)】；

基金：This research was supported by the Key Innovation Program of Shanghai Municipal Education Commission (14ZZ062), National University Student Innovation Program (121025104) and University Student Research Plan (20130363).

语种：英文

外文关键词：Ion exchange resin; Forward osmosis; Mass transfer; Extra charged passageway

摘要：To improve the efficiency of forward osmosis (FO) process, Na type ion exchange resin (IER-Na) powders were successfully blended into the support layer of FO membrane, which could introduce extra charged passageway. Consequently, the water flux of 5wt%IER-Na (with 5 wt% IER-Na loading) was 1.75 times as large as that of Owt %IER-Na (with 0 wt% IER-Na loading), under the condition for evaluating FO performance (1.5 mol/L NaCI as draw solution and de-ionized water as feed solution in AL-DS mode). Notably, the salt rejection was retained above 95.0%. By multi -techniques such as SEM, EDS, ATR-FTIR and the analysis of diffusion coefficients in both polysulfone and IER-Na, it was proved that the enhanced water flux was mainly attributed to the extra charged passageway introduced by IER-Na. Meanwhile, the retained salt rejection was ascribed to the considerable salt rejection of extra charged passageway in IER-Na. This work sheds light on a new perspective in promoting the mass transfer in FO membranes.