Biofouling mitigation by chloramination during forward osmosis filtration of wastewater

Fujioka, T; Nguyen, KH; Hoang, AT; Ueyama, T; Yasui, H; Terashima, M; Nghiem, LD

Biofouling mitigation by chloramination during forward osmosis filtration of wastewater

Fujioka, T Nguyen, KH Hoang, AT Ueyama, T Yasui, H Terashima, M Nghiem, LD

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Publication Type:: Journal Article
Citation:: International Journal of Environmental Research and Public Health, 2018, 15 (10)
Issue Date:: 2018-09-27

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Field	Value	Language
dc.contributor.author	Fujioka, T	en_US
dc.contributor.author	Nguyen, KH	en_US
dc.contributor.author	Hoang, AT	en_US
dc.contributor.author	Ueyama, T	en_US
dc.contributor.author	Yasui, H	en_US
dc.contributor.author	Terashima, M	en_US
dc.contributor.author	Nghiem, LD https://orcid.org/0000-0002-9039-5792	en_US
dc.date.available	2018-09-24	en_US
dc.date.issued	2018-09-27	en_US
dc.identifier.citation	International Journal of Environmental Research and Public Health, 2018, 15 (10)	en_US
dc.identifier.issn	1661-7827	en_US
dc.identifier.uri	http://hdl.handle.net/10453/130182
dc.description.abstract	© 2018 by the authors. Licensee MDPI, Basel, Switzerland. Pre-concentration is essential for energy and resource recovery from municipal wastewater. The potential of forward osmosis (FO) membranes to pre-concentrate wastewater for subsequent biogas production has been demonstrated, although biofouling has also emerged as a prominent challenge. This study, using a cellulose triacetate FO membrane, shows that chloramination of wastewater in the feed solution at 3–8 mg/L residual monochloramine significantly reduces membrane biofouling. During a 96-h pre-concentration, flux in the chloraminated FO system decreased by only 6% and this flux decline is mostly attributed to the increase in salinity (or osmotic pressure) of the feed due to pre-concentration. In contrast, flux in the non-chloraminated FO system dropped by 35% under the same experimental conditions. When the feed was chloraminated, the number of bacterial particles deposited on the membrane surface was significantly lower compared to a non-chloraminated wastewater feed. This study demonstrated, for the first time, the potential of chloramination to inhibit bacteria growth and consequently biofouling during pre-concentration of wastewater using a FO membrane.	en_US
dc.relation.ispartof	International Journal of Environmental Research and Public Health	en_US
dc.relation.isbasedon	10.3390/ijerph15102124	en_US
dc.subject.classification	Toxicology	en_US
dc.subject.mesh	Chloramines	en_US
dc.subject.mesh	Membranes, Artificial	en_US
dc.subject.mesh	Filtration	en_US
dc.subject.mesh	Water Purification	en_US
dc.subject.mesh	Osmosis	en_US
dc.subject.mesh	Hydrogen-Ion Concentration	en_US
dc.subject.mesh	Japan	en_US
dc.subject.mesh	Biofouling	en_US
dc.subject.mesh	Waste Water	en_US
dc.title	Biofouling mitigation by chloramination during forward osmosis filtration of wastewater	en_US
dc.type	Journal Article
utslib.citation.volume	10	en_US
utslib.citation.volume	15	en_US
utslib.for	1117 Public Health and Health Services	en_US
utslib.for	0907 Environmental 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	open_access
pubs.issue	10	en_US
pubs.publication-status	Published	en_US
pubs.volume	15	en_US

Abstract:

© 2018 by the authors. Licensee MDPI, Basel, Switzerland. Pre-concentration is essential for energy and resource recovery from municipal wastewater. The potential of forward osmosis (FO) membranes to pre-concentrate wastewater for subsequent biogas production has been demonstrated, although biofouling has also emerged as a prominent challenge. This study, using a cellulose triacetate FO membrane, shows that chloramination of wastewater in the feed solution at 3–8 mg/L residual monochloramine significantly reduces membrane biofouling. During a 96-h pre-concentration, flux in the chloraminated FO system decreased by only 6% and this flux decline is mostly attributed to the increase in salinity (or osmotic pressure) of the feed due to pre-concentration. In contrast, flux in the non-chloraminated FO system dropped by 35% under the same experimental conditions. When the feed was chloraminated, the number of bacterial particles deposited on the membrane surface was significantly lower compared to a non-chloraminated wastewater feed. This study demonstrated, for the first time, the potential of chloramination to inhibit bacteria growth and consequently biofouling during pre-concentration of wastewater using a FO membrane.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/130182