Forward osmosis desalination using polymer hydrogels as a draw agent: Influence of draw agent, feed solution and membrane on process performance

D. Li; X. Zhang; G.P. Simon; H. Wang

doi:10.1016/j.watres.2012.09.049

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Forward osmosis desalination using polymer hydrogels as a draw agent: Influence of draw agent, feed solution and membrane on process performance

Journal article

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Forward osmosis desalination using polymer hydrogels as a draw agent: Influence of draw agent, feed solution and membrane on process performance

D. Li, X. Zhang, G.P. Simon and H. Wang

Water Research, Vol.47(1), pp.209-215

2013

DOI: https://doi.org/10.1016/j.watres.2012.09.049

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Abstract

We have previously reported the use of hydrogel particles as the draw agent for forward osmosis desalination. In the present work, the effects of draw agent, feed concentration and membrane on the process performance were systematically examined. Our results showed that the incorporation of carbon filler particles in polymer hydrogels led to enhanced swelling ratios of the draw agents and thus higher water fluxes in the FO process. The composite polymer hydrogel particles of sizes ranging from 100 μm to 200 μm as draw agents induced greater water fluxes in FO desalination as compared with those with larger particle sizes (500-700 μm). Similar to other types of draw solutes, as the salt concentration in the feed increased, the water flux created by the polymer hydrogel draw agent decreased; the use of a cellulose triacetate forward osmosis membrane resulted in higher water flux compared with the use of a polyamide composite reverse osmosis membrane.

Details

Title: Forward osmosis desalination using polymer hydrogels as a draw agent: Influence of draw agent, feed solution and membrane on process performance
Authors/Creators: D. Li (Author/Creator) - Monash University
X. Zhang (Author/Creator) - Monash University
G.P. Simon (Author/Creator) - Monash University
H. Wang (Author/Creator) - Monash University
Publication Details: Water Research, Vol.47(1), pp.209-215
Publisher: Elsevier BV
Identifiers: 991005540516307891
Copyright: © 2012 Elsevier Ltd.
Murdoch Affiliation: School of Environmental Science
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 2 Chemistry; 2.241 Membrane Science; 2.241.270 Nanofiltration
Web Of Science research areas: Engineering, Environmental; Environmental Sciences; Water Resources
ESI research areas: Environment/Ecology