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

Research output: Contribution to journalArticleResearchpeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)2583-2590
Number of pages8
JournalSeparation Science and Technology
Volume52
Issue number16
DOIs
Publication statusPublished - 2017

Keywords

  • Forward osmosis
  • hydrogel
  • membrane process
  • water treatment

Cite this

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abstract = "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.",
keywords = "Forward osmosis, hydrogel, membrane process, water treatment",
author = "Tu, {Kha L.} and Simon, {George P.} and Huanting Wang",
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Fast-responsive monolithic hydrogels as draw agent for forward osmosis membrane process. / Tu, Kha L.; Simon, George P.; Wang, Huanting.

In: Separation Science and Technology, Vol. 52, No. 16, 2017, p. 2583-2590.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Fast-responsive monolithic hydrogels as draw agent for forward osmosis membrane process

AU - Tu, Kha L.

AU - Simon, George P.

AU - Wang, Huanting

PY - 2017

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N2 - 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.

AB - 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.

KW - Forward osmosis

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KW - membrane process

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