Exploring an innovative surfactant and phosphate-based draw solution for forward osmosis desalination

Nguyen, HT; Chen, SS; Nguyen, NC; Ngo, HH; Guo, W; Li, CW

Exploring an innovative surfactant and phosphate-based draw solution for forward osmosis desalination

Nguyen, HT Chen, SS Nguyen, NC Ngo, HH

Guo, W

Li, CW

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Publication Type:: Journal Article
Citation:: Journal of Membrane Science, 2015, 489 pp. 212 - 219
Issue Date:: 2015-09-01

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Field	Value	Language
dc.contributor.author	Nguyen, HT	en_US
dc.contributor.author	Chen, SS	en_US
dc.contributor.author	Nguyen, NC	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858	en_US
dc.contributor.author	Li, CW	en_US
dc.date.issued	2015-09-01	en_US
dc.identifier.citation	Journal of Membrane Science, 2015, 489 pp. 212 - 219	en_US
dc.identifier.issn	0376-7388	en_US
dc.identifier.uri	http://hdl.handle.net/10453/36471
dc.description.abstract	© 2015 Elsevier B.V. The reverse salt flux phenomenon of forward osmosis affects the quality of the feed water, reduces water flux, and increases the cost for replenishing lost draw solute. In this study, a novel draw solution comprising a mixture of Triton X100 and Na<inf>3</inf>PO<inf>4</inf> for minimizing the reverse salt flux during forward osmosis (FO) was explored. The results indicated that the reverse salt flux caused by coupling 0.5mM Triton X100 to 0.55M Na<inf>3</inf>PO<inf>4</inf> draw solution was only 0.13g/m<sup>2</sup>h, and the specific reverse salt flux was 0.03g/L using DI water as the feed solution, which are the lowest recorded values among all forward osmosis studies. Hydrophobic attractive interactions between tail groups of Triton X100 with the FO membrane are believed to be the main mechanism for minimizing salt leakage. Results from desalination experiments demonstrated that using 0.55M Na<inf>3</inf>PO<inf>4</inf> coupled with 0.5mM Triton X100 as the draw solution and brackish water and seawater as the feed solution with total dissolved solids of 4090 and 36,800ppm achieved water fluxes of 4.89L/m<sup>2</sup>h and 1.15L/m<sup>2</sup>h, respectively. Furthermore, using a two-stage ultrafiltration-nanofiltration system for the draw solution recovery enabled 98% recovery of solutes.	en_US
dc.relation.ispartof	Journal of Membrane Science	en_US
dc.relation.isbasedon	10.1016/j.memsci.2015.03.085	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Exploring an innovative surfactant and phosphate-based draw solution for forward osmosis desalination	en_US
dc.type	Journal Article
utslib.citation.volume	489	en_US
utslib.for	0907 Environmental Engineering	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	489	en_US

Abstract:

© 2015 Elsevier B.V. The reverse salt flux phenomenon of forward osmosis affects the quality of the feed water, reduces water flux, and increases the cost for replenishing lost draw solute. In this study, a novel draw solution comprising a mixture of Triton X100 and Na3PO4 for minimizing the reverse salt flux during forward osmosis (FO) was explored. The results indicated that the reverse salt flux caused by coupling 0.5mM Triton X100 to 0.55M Na3PO4 draw solution was only 0.13g/m²h, and the specific reverse salt flux was 0.03g/L using DI water as the feed solution, which are the lowest recorded values among all forward osmosis studies. Hydrophobic attractive interactions between tail groups of Triton X100 with the FO membrane are believed to be the main mechanism for minimizing salt leakage. Results from desalination experiments demonstrated that using 0.55M Na3PO4 coupled with 0.5mM Triton X100 as the draw solution and brackish water and seawater as the feed solution with total dissolved solids of 4090 and 36,800ppm achieved water fluxes of 4.89L/m²h and 1.15L/m²h, respectively. Furthermore, using a two-stage ultrafiltration-nanofiltration system for the draw solution recovery enabled 98% recovery of solutes.

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http://hdl.handle.net/10453/36471