文献类型：期刊文献

英文题名：Poly(styrene sulfonic acid) sodium modified nanofiltration membranes with improved permeability for the softening of highly concentrated seawater

作者：Hu, Deng[1];Xu, Zhen-Liang[1];Wei, Yong-Ming[1];Liu, Yi-Fei[1]

机构：[1]E China Univ Sci & Technol, Chem Engn Res Ctr, Membrane Sci & Engn R&D Lab, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：336

期号：1

起止页码：179

外文期刊名：DESALINATION

收录：;EI(收录号：20140617282214);WOS:【SCI-EXPANDED(收录号:WOS:000332431300021)】；

基金：The authors thank the Key Technology R&D Program of Shanghai Committee of Science and Technology in China (11DZ1205201) for its financial support.

语种：英文

外文关键词：Nanofiltration membrane; Interfacial polymerization; Poly(styrene sulfonic acid) sodium salt; Highly concentrated seawater

摘要：Poly(styrene sulfonic acid) sodium salt (PSSS)/polypiperazine-amide nanofiltration (NF) membrane and PSSS/SiO2/polypiperazine-amide NF membrane were prepared by interfacial polymerization of piperazine (PIP) and trimesoyl chloride (TMC) on polyethersulfone (PES) supporting membrane. Effect of PSSS and silica concentrations were discussed. The active surface of the membrane was characterized by using SEM and AFM. The results showed that PSSS/polypiperazine-amide NF membrane prepared under the optimum conditions exhibited Na2SO4 rejection of 96.1% and water flux with 55.7 L m(-2) h(-1) at operation pressure of 0.6 MPa. The rejection of Na2SO4, MgSO4, MgCl2 and NaCI follows a decreasing in order of 96.1%, 85.2% 45.4% and 21.1% respectively. After addition of 0.2% (w/v) silica in the aqueous phase, the water flux increased 42.7% compared with only polypiperazine-amide NF membrane. The PSSS/polypiperazine-amide NF membrane shows a promising capability for softening highly concentrated seawater from 8-20 wt.%. (C) 2013 Elsevier B.V. All rights reserved.