文献类型：期刊文献

英文题名：Improving the chlorine-tolerant ability of polypiperazine-amide nanofiltration membrane by adding NH2-PEG-NH2 in the aqueous phase

作者：Tang, Yong-Jian[1];Xu, Zhen-Liang[1];Xue, Shuang-Mei[1];Wei, Yong-Ming[1];Yang, Hu[1]

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

年份：2017

卷号：538

起止页码：9

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20172203699225);WOS:【SCI-EXPANDED(收录号:WOS:000402509500002)】；

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) 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：Nanofiltration preparation; alpha,omega-diamino poly(ethylene glycol); Interfacial polymerization; Chlorine tolerant

摘要：A novel polypiperazine-amide nanofiltration (NF) membrane with very high salt rejection was successfully developed in this work. The NF membrane chlorine-tolerant ability were improved greatly after mixing a small amount of a,omega-diamino poly(ethylene glycol) (NH2-PEG-NH2) with piperazine (PIP) in the aqueous phase. The XPS result demonstrated that the polymerization degree of the NF membrane was notably enhanced with the addition of NH2-PEG-NH2. The solute rejections and chlorine tolerance were improved remarkably, while the permeate flux remained almost at the same level. When the NH2-PEG-NH2 (2 kDa) content in the total amine was 1%w/w (0.01% w/v in the aqueous solution), NF membrane performance was optimal. This membrane exhibited a pure water flux (PWF) of 34.9 Lm(-2)h(-1) along with Na2SO4, MgSO4, MgCl2 and NaCl rejections of 99.5%, 99.2%, 90.9% and 58.3% (2000 ppm, 6 bar, 25 degrees C), respectively. Moreover, the NF membrane performance was maintained after being treated by 14,000 ppm NaClO for 1 h. Therefore, adding a small amount of NH2-PEG-NH2 in the aqueous phase could be considered to be an effective way to improve the polypiperazine-amide NF membrane chlorine-tolerant ability.