Catalog Home Page

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

Li, D., Zhang, X., Simon, G.P. and Wang, H. (2013) Forward osmosis desalination using polymer hydrogels as a draw agent: Influence of draw agent, feed solution and membrane on process performance. Water Research, 47 (1). pp. 209-215.

[img]
Preview
PDF - Authors' Version
Download (965kB) | Preview
    Link to Published Version: http://dx.doi.org/10.1016/j.watres.2012.09.049
    *Subscription may be required

    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.

    Publication Type: Journal Article
    Murdoch Affiliation: School of Environmental Science
    Publisher: Elsevier BV
    Copyright: © 2012 Elsevier Ltd.
    URI: http://researchrepository.murdoch.edu.au/id/eprint/12256
    Item Control Page

    Downloads

    Downloads per month over past year