Fast-responsive monolithic hydrogels as draw agent for forward osmosis membrane process

被引：16
|
作者：
Tu, Kha L. [1 ]
Simon, George P. [2 ]
Wang, Huanting [1 ]
机构：
[1] Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia
[2] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic, Australia
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2017年 / 52卷 / 16期
基金：
澳大利亚研究理事会;
关键词：
Forward osmosis; hydrogel; membrane process; water treatment; POLYMER HYDROGELS; POLY(N-ISOPROPYLACRYLAMIDE) HYDROGELS; POLY(VINYL ALCOHOL); PROCESS PERFORMANCE; SWELLING BEHAVIOR; DESALINATION; METHACRYLATE); TEMPERATURE; TRANSITION; NETWORKS;
D O I：
10.1080/01496395.2017.1310237
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A monolithic copolymer hydrogel was synthesised by polymerising n-isopropylacrylamide and sodium acrylate in the presence of poly(sodium 4-styrenesulfonate) (PSSS) chains and studied as potential draw agent for forward osmosis (FO) process. The monolithic hydrogel synthesised from 19% NIPAM, 1% SA, and 15% PSSS at 60 degrees C generated higher FO water flux and higher recovery rate than other hydrogels, due to improved membrane-hydrogel contact and water transport. In particular, the synthesised hydrogel draw agent achieved twice water flux compared with the particles. The monolithic hydrogel containing a smaller amount of water produced a higher water flux due to its high swelling pressure.
引用
收藏
页码：2583 / 2590
页数：8
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