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

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,...

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Published in:Separation science and technology 2017-11, Vol.52 (16), p.2583-2590
Main Authors: Tu, Kha L., Simon, George P., Wang, Huanting
Format: Article
Language:English
Subjects:
Chemical synthesis
Fluctuations
Flux
Forward osmosis
hydrogel
Hydrogels
Isopropylacrylamide
membrane process
Osmosis
Sodium
Swelling pressure
Water
Water transport
water treatment
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description 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°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.
doi_str_mv 10.1080/01496395.2017.1310237
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source Taylor and Francis Science and Technology Collection
subjects Chemical synthesis
Fluctuations
Flux
Forward osmosis
hydrogel
Hydrogels
Isopropylacrylamide
membrane process
Osmosis
Sodium
Swelling pressure
Water
Water transport
water treatment
title Fast-responsive monolithic hydrogels as draw agent for forward osmosis membrane process
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