Effective natural organic matter removal in pond water by carbon nanotube membrane with flocculation/adsorption

Lee, J; Vigneswaran, S; Zhang, Y; Reddy, RSPR; Liu, Z

Effective natural organic matter removal in pond water by carbon nanotube membrane with flocculation/adsorption

Lee, J Vigneswaran, S

Zhang, Y Reddy, RSPR Liu, Z

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Publication Type:: Journal Article
Citation:: Water Science and Technology: Water Supply, 2017, 17 (4), pp. 1080 - 1087
Issue Date:: 2017-07-01

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Field	Value	Language
dc.contributor.author	Lee, J	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.contributor.author	Zhang, Y	en_US
dc.contributor.author	Reddy, RSPR	en_US
dc.contributor.author	Liu, Z	en_US
dc.date.issued	2017-07-01	en_US
dc.identifier.citation	Water Science and Technology: Water Supply, 2017, 17 (4), pp. 1080 - 1087	en_US
dc.identifier.issn	1606-9749	en_US
dc.identifier.uri	http://hdl.handle.net/10453/125898
dc.description.abstract	© 2017 IWA Publishing. A carbon nanotube (CNT) ultrafiltration (UF) membrane was applied to natural organic matter (NOM) removal in pond water treatment. The source water was pretreated by flocculation and/or adsorption prior to the UF process to alleviate permeate flux decline and improve NOM removal efficiency. The performance of a commercial polyethersulfone (PES) UF membrane was compared to evaluate that of the CNT membrane. The CNTmembrane outperformed the PES-UF membrane. The permeate flux, total organic carbon and humic acid (HA) removal rate of the CNT membrane was observed to be 230 LMH/ bar, 60%, and 80% when 30mg/L poly aluminium chloride (PACI) flocculation was applied. This highlights that the permeate flux was three times higher with slightly higher rejection efficiency than the PES-UF membrane. In particular, severe permeate flux decline was completely overcome by the CNT membrane with 30mg/L PACI coagulation. For powder activated carbon (PAC) adsorption, even though there was a severe permeate flux decline in the CNT membrane, almost complete HA removal (98%) was achieved when 0.5 g/L PAC adsorption was coupled. Based on the superior performance of the CNT membrane with pretreatment, the CNT membrane is suggested to be a robust system for a high concentration of organic matter pond water treatment without membrane flux decline.	en_US
dc.relation.ispartof	Water Science and Technology: Water Supply	en_US
dc.relation.isbasedon	10.2166/ws.2017.005	en_US
dc.subject.classification	Environmental Engineering	en_US
dc.title	Effective natural organic matter removal in pond water by carbon nanotube membrane with flocculation/adsorption	en_US
dc.type	Journal Article
utslib.citation.volume	4	en_US
utslib.citation.volume	17	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0905 Civil Engineering	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	closed_access
pubs.issue	4	en_US
pubs.publication-status	Published	en_US
pubs.volume	17	en_US

Abstract:

© 2017 IWA Publishing. A carbon nanotube (CNT) ultrafiltration (UF) membrane was applied to natural organic matter (NOM) removal in pond water treatment. The source water was pretreated by flocculation and/or adsorption prior to the UF process to alleviate permeate flux decline and improve NOM removal efficiency. The performance of a commercial polyethersulfone (PES) UF membrane was compared to evaluate that of the CNT membrane. The CNTmembrane outperformed the PES-UF membrane. The permeate flux, total organic carbon and humic acid (HA) removal rate of the CNT membrane was observed to be 230 LMH/ bar, 60%, and 80% when 30mg/L poly aluminium chloride (PACI) flocculation was applied. This highlights that the permeate flux was three times higher with slightly higher rejection efficiency than the PES-UF membrane. In particular, severe permeate flux decline was completely overcome by the CNT membrane with 30mg/L PACI coagulation. For powder activated carbon (PAC) adsorption, even though there was a severe permeate flux decline in the CNT membrane, almost complete HA removal (98%) was achieved when 0.5 g/L PAC adsorption was coupled. Based on the superior performance of the CNT membrane with pretreatment, the CNT membrane is suggested to be a robust system for a high concentration of organic matter pond water treatment without membrane flux decline.

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http://hdl.handle.net/10453/125898