文献类型：期刊文献

英文题名：Interfacial polymerization on PES hollow fiber membranes using mixed diamines for nanofiltration removal of salts containing oxyanions and ferric ions

作者：Zhou, Bing-Wu[1];Zhang, Hai-Zhen[1];Xu, Zhen-Liang[1];Tang, Yong-Jian[1]

机构：[1]E China Univ Sci & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Membrane Sci & Engn R&D Lab, 130 Meitong Rd, Shanghai 200237, Peoples R China

年份：2016

卷号：394

起止页码：176

外文期刊名：DESALINATION

收录：;EI(收录号：20162102418397);WOS:【SCI-EXPANDED(收录号:WOS:000379564600018)】；

基金：The authors are thankful for the financial support received from 2013 Special Project of the Development and Industrialization of New Materials of National Development and Reform Commission in China (GX1301), the National Science and Technology Support Project of China (2014BAB07B01 and 2015BAB09B01), Project of National Energy Administration of China (2011-1635 and 2013-117) and the Key Technology R&D Program of Jiangsu Committee of Science and Technology in China (BE2013031).

语种：英文

外文关键词：Hollow fiber nanofiltration membrane; Interfacial polymerization; Mixed diamine monomer; Long-term desalination stability; Preparation

摘要：Thin film composite (TFC) hollow fiber nanofiltration (NF) membranes were fabricated via interfacial polymerization, with mixed diamines of piperazine (PIP) and 2,2'-bis(1-hydroxyl-1-trifluoromethyl-2,2,2-triflutoethyl)-4,4'-methylenedianiline (BHTTM) as water phase and trimesoyl chloride (TMC) as organic phase. Fabricated membranes were characterized for ATR-FTIR, SEM, AFM, and water contact angle. Formation conditions of the selective polyamide layer have been optimized for a good NF membrane performance. The pure water flux of NF membrane prepared under optimized conditions was 31.2 L.m(-2).h(-1) and the rejection for Na2SO4 was 99.7% at 6 bar. The rejections of NF membranes for different salts followed the order: Na2SO4>MgSO4>NaCl>MgCl2. The molecular weight cut-off of NF membrane was around 300 Da. The performance of NF membranes was stable during a 7-day filtration process for rejecting different species ions including heavy metal ferric ion (FeCl3 and Fe-2(SO4)(3)) and oxyanions (SO42- and HPO42-), in addition to different inorganic salts. Also, the NF membranes exhibited chlorine tolerant property. This work demonstrates the potential of PES outer-selective TFC hollow fiber membranes for desalination or water softening process, provides database to fabricate suitable NF membranes for long-term salts removal and raise a simple technique to form a thin chlorine-tolerant polyamide layer. (C) 2016 Elsevier B.V. All rights reserved.