Performance of a seawater-driven forward osmosis process for pre-concentrating digested sludge centrate: Organic enrichment and membrane fouling

Vu, MT; Ansari, AJ; Hai, FI; Nghiem, LD

Performance of a seawater-driven forward osmosis process for pre-concentrating digested sludge centrate: Organic enrichment and membrane fouling

Vu, MT Ansari, AJ Hai, FI Nghiem, LD

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Publication Type:: Journal Article
Citation:: Environmental Science: Water Research and Technology, 2018, 4 (7), pp. 1047 - 1056
Issue Date:: 2018-07-01

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Field	Value	Language
dc.contributor.author	Vu, MT	en_US
dc.contributor.author	Ansari, AJ	en_US
dc.contributor.author	Hai, FI	en_US
dc.contributor.author	Nghiem, LD https://orcid.org/0000-0002-9039-5792	en_US
dc.date.available	2020-05-25T19:25:51Z
dc.date.issued	2018-07-01	en_US
dc.identifier.citation	Environmental Science: Water Research and Technology, 2018, 4 (7), pp. 1047 - 1056	en_US
dc.identifier.issn	2053-1400	en_US
dc.identifier.uri	http://hdl.handle.net/10453/132473
dc.description.abstract	© 2018 The Royal Society of Chemistry. This study demonstrated the potential of seawater-driven forward osmosis for enriching organic matter in digested sludge centrate. The results indicated that the cellulose triacetate membrane offered better performance than the polyamide membrane in terms of organic materials enrichment, fouling resistance and membrane cleaning efficiency. Membrane fouling decreased the enrichment efficiency of organic matter since the deposition of suspended particulate matter on the membrane surface caused fouling and loss of organic matter from the concentrated sludge centrate. The results showed that increasing the draw solution concentration increased flux but did not aggravate membrane fouling, however, it could reduce the efficiency of physical flushing to recover the flux. Seawater showed comparable forward osmosis performance to that of analytical grade NaCl as draw solutes in terms of flux and organic enrichment. The results also showed that seawater as the draw solution resulted in more membrane fouling and lower flux recovery compared to NaCl.	en_US
dc.relation.ispartof	Environmental Science: Water Research and Technology	en_US
dc.relation.isbasedon	10.1039/c8ew00132d	en_US
dc.title	Performance of a seawater-driven forward osmosis process for pre-concentrating digested sludge centrate: Organic enrichment and membrane fouling	en_US
dc.type	Journal Article
utslib.citation.volume	7	en_US
utslib.citation.volume	4	en_US
utslib.for	0907 Environmental Engineering	en_US
utslib.for	0399 Other Chemical Sciences	en_US
utslib.for	0905 Civil 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
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	open_access
pubs.issue	7	en_US
pubs.publication-status	Published	en_US
pubs.volume	4	en_US

Abstract:

© 2018 The Royal Society of Chemistry. This study demonstrated the potential of seawater-driven forward osmosis for enriching organic matter in digested sludge centrate. The results indicated that the cellulose triacetate membrane offered better performance than the polyamide membrane in terms of organic materials enrichment, fouling resistance and membrane cleaning efficiency. Membrane fouling decreased the enrichment efficiency of organic matter since the deposition of suspended particulate matter on the membrane surface caused fouling and loss of organic matter from the concentrated sludge centrate. The results showed that increasing the draw solution concentration increased flux but did not aggravate membrane fouling, however, it could reduce the efficiency of physical flushing to recover the flux. Seawater showed comparable forward osmosis performance to that of analytical grade NaCl as draw solutes in terms of flux and organic enrichment. The results also showed that seawater as the draw solution resulted in more membrane fouling and lower flux recovery compared to NaCl.

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http://hdl.handle.net/10453/132473