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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
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.
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页码:2583 / 2590
页数:8
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