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Citation
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HERO ID
4742957
Reference Type
Journal Article
Title
Forward osmosis using draw solutions manifesting liquid-liquid phase separation
Author(s)
Darvishmanesh, S; Pethica, BA; Sundaresan, S
Year
2017
Is Peer Reviewed?
Yes
Journal
Desalination
ISSN:
0011-9164
Volume
421
Page Numbers
23-31
DOI
10.1016/j.desal.2017.05.036
Web of Science Id
WOS:000412608700004
Abstract
Desalination via forward osmosis using draw agents whose regeneration is aided via liquid-liquid phase separation has gained much attention in recent years. In the present study, mixtures of two different glycol ethers, tripropylene glycol methyl ether and tripropylene glycol n-butyl ether, have been studied as potential draw agents. Water activity, viscosity and diffusion coefficient of draw solutions have been measured at different mixture compositions, concentrations and temperatures. Osmotic pressures of these draw solutions decreases strongly with increasing temperature. Forward osmosis experiments performed with these draw solutions reveal appreciable initial loss of trans-membrane water flux, reverse solute flux and severe concentration polarization.
Keywords
Forward osmosis; Lower critical solution temperature; Glycol ethers; Liquid-liquid phase separation
Tags
OPPT
•
Glycols
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Human Health
WOS (private)
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WOS (private)
Environmental Hazard
WOS (private)
•
Propylene glycol ethers (88917-22-0 & 55934-93-5)
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Human Health
WOS (private)
Fate
WOS (private)
Environmental Hazard
WOS (private)
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