A novel loose-NF membrane based on the phosphorylation and cross-linking of polyethyleneimine layer on porous PAN UF membranes
A novel loose-NF membrane based on the phosphorylation and cross-linking of polyethyleneimine layer on porous PAN UF membranes
复制标题
一种基于多孔 PAN UF 膜上聚乙烯亚胺层磷酸化和交联的新型松散 NF 膜
DOI：
10.1016/j.memsci.2018.03.018
复制
发表时间：
2018-06-01
影响因子：
9.5
通讯作者：
Khan, Bushra
中科院分区：
文献类型：
--
作者：
Li, Ping;Wang, Zhan;Khan, Bushra
在本研究中，一种新型的松散纳滤膜制备的聚乙烯亚胺（PEI）层的水解聚丙烯腈（HPAN）超滤膜，然后与肌醇六磷酸（IP 6）磷酸化和交联过程。该交联网络是通过Fe（III）离子与PEI的配位交联以及PEI与IP 6的静电吸引作用而形成的。在优化的制备条件下，所制备的松式纳滤膜对染料具有较高的截留率，对不同的盐具有良好的透过率。对0.1g/L的甲基蓝（MB）、刚果红（GR）、酸性品红（AF）和结晶紫（CV）水溶液的截留率分别为99.92%、99.53%、98.99%和92.86%，相应的通量分别为11.54、10.96、在0.2 MPa的操作压力下，11.40和11.76 Lm（-2）h（-1）。膜对不同盐溶液的截留率依次为MgCl_2（30.51%）> MgSO_4（20.57%）> NaCl（7.46%）> Na_2SO_4（5.89%），在0.2MPa下膜通量约为19 Lm（-2）h（-1）。该膜对印染废水的生物处理具有良好的稳定性（100 h）。
In this study, a novel loose-NF membrane was fabricated by coating the polyethyleneimine (PEI) layer on a hydrolyzed polyacrylonitrile (HPAN) ultrafiltration membrane, followed by phosphorylation with inositol hexaphosphate (IP6) and cross-linking process. The cross-linked network was constructed by the coordinative cross-linking of Fe (III) ion and phos-(PEI), and the electrostatic attraction of PEI and IP6. At the optimized fabricating conditions, the loose-NF membrane exhibited both high rejection to dyes and transmission to different salts. The rejections of 0.1 g/L methyl blue (MB), congo red (GR), acid fuchsin (AF) and crystal violet (CV) aqueous solutions respectively were 99.92%, 99.53%, 98.99% and 92.86%, and the corresponding fluxes were 11.54, 10.96, 11.40 and 11.76 Lm(-2) h(-1) at operating pressure of 0.2 MPa. Meanwhile, the membrane exhibited low rejections to different salt solutions with the order of MgCl2 (30.51%) > MgSO4 (20.57%) > NaCl (7.46%) > Na2SO4 (5.89%) and fluxes around 19 Lm(-2) h(-1) at 0.2 MPa. Moreover, the prepared membrane possessed high stability for dealing with biologically treated textile effluent (100 h).