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Article: Effect of biopolymer clusters on the fouling property of sludge from a membrane bioreactor (MBR) and its control by ozonation

TitleEffect of biopolymer clusters on the fouling property of sludge from a membrane bioreactor (MBR) and its control by ozonation
Authors
KeywordsBiopolymer clusters (BPC)
Membrane bioreactor (MBR)
Membrane fouling
Microfiltration
Ozonation
Soluble microbial products (SMP)
Issue Date2011
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/procbio
Citation
Process Biochemistry, 2011, v. 46 n. 1, p. 162-167 How to Cite?
AbstractOrganic substances in the liquid phase of the sludge in a membrane bioreactor (MBR) have a profound impact on membrane fouling. In this study, a single-fibre microfiltration apparatus was developed to investigate the fouling propensity of MBR sludge and the effectiveness of ozonation in membrane fouling mitigation. The results show that biopolymer clusters (BPC) in the MBR suspension had a significant influence on the fouling potential of the sludge. An increase in BPC concentration by 20% and 60% from around 3.5 mg/l in the mixed sludge liquor drastically increased the fouling rate by 120% and 300%, respectively. Ozonation of the BPC solution greatly reduced the detrimental role of BPC in membrane fouling. An ozone dose of 0.03 mg/mg TOC of BPC could reduce the mean BPC size from 38 to 27 μm, which was further reduced to 12 μm at 0.3 mg O3/mg TOC of BPC. In addition to BPC destruction, ozonation apparently also modified the surface properties of BPC, resulting in an increase in the filterable fraction and a decrease in the liquid viscosity. Based on the experimental findings, an approach for MBR membrane fouling control is proposed that applies ozonation to the supernatant containing BPC in a side-stream application. © 2010 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/132394
ISSN
2015 Impact Factor: 2.529
2015 SCImago Journal Rankings: 0.937
ISI Accession Number ID
Funding AgencyGrant Number
University Grants Council (UGC)SEG_HKU10
Research Grants Council (RGC) of the Hong Kong SAR GovernmentHKU7144/E07
Funding Information:

This research was supported by URC funding from the University of Hong Kong, Special Equipment Grant SEG_HKU10 from the University Grants Council (UGC) and Grant HKU7144/E07 from the Research Grants Council (RGC) of the Hong Kong SAR Government. The technical assistance of Mr. Keith C.H. Wong is greatly appreciated.

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorSun, FYen_HK
dc.contributor.authorWang, XMen_HK
dc.contributor.authorLi, XYen_HK
dc.date.accessioned2011-03-28T09:24:06Z-
dc.date.available2011-03-28T09:24:06Z-
dc.date.issued2011en_HK
dc.identifier.citationProcess Biochemistry, 2011, v. 46 n. 1, p. 162-167en_HK
dc.identifier.issn1359-5113en_HK
dc.identifier.urihttp://hdl.handle.net/10722/132394-
dc.description.abstractOrganic substances in the liquid phase of the sludge in a membrane bioreactor (MBR) have a profound impact on membrane fouling. In this study, a single-fibre microfiltration apparatus was developed to investigate the fouling propensity of MBR sludge and the effectiveness of ozonation in membrane fouling mitigation. The results show that biopolymer clusters (BPC) in the MBR suspension had a significant influence on the fouling potential of the sludge. An increase in BPC concentration by 20% and 60% from around 3.5 mg/l in the mixed sludge liquor drastically increased the fouling rate by 120% and 300%, respectively. Ozonation of the BPC solution greatly reduced the detrimental role of BPC in membrane fouling. An ozone dose of 0.03 mg/mg TOC of BPC could reduce the mean BPC size from 38 to 27 μm, which was further reduced to 12 μm at 0.3 mg O3/mg TOC of BPC. In addition to BPC destruction, ozonation apparently also modified the surface properties of BPC, resulting in an increase in the filterable fraction and a decrease in the liquid viscosity. Based on the experimental findings, an approach for MBR membrane fouling control is proposed that applies ozonation to the supernatant containing BPC in a side-stream application. © 2010 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_US
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/procbioen_HK
dc.relation.ispartofProcess Biochemistryen_HK
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Process Biochemistry. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Process Biochemistry, 2011, v. 46 n. 1, p. 162-167. DOI: http://dx.doi.org/10.1016/j.procbio.2010.08.003-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectBiopolymer clusters (BPC)en_HK
dc.subjectMembrane bioreactor (MBR)en_HK
dc.subjectMembrane foulingen_HK
dc.subjectMicrofiltrationen_HK
dc.subjectOzonationen_HK
dc.subjectSoluble microbial products (SMP)en_HK
dc.subject.meshFouling mitigation-
dc.subject.meshLiquid viscosity-
dc.subject.meshMembrane bioreactor (MBR)-
dc.subject.meshOrganic substances-
dc.subject.meshSoluble microbial products-
dc.titleEffect of biopolymer clusters on the fouling property of sludge from a membrane bioreactor (MBR) and its control by ozonationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0960-8524&volume=46&issue=1&spage=162&epage=167&date=2011&atitle=Effect+of+biopolymer+clusters+on+the+fouling+property+of+sludge+from+a+membrane+bioreactor+(MBR)+and+its+control+by+ozonation-
dc.identifier.emailWang, XM: wangxm@hku.hken_HK
dc.identifier.emailLi, XY: xlia@hkucc.hku.hken_HK
dc.identifier.authorityWang, XM=rp01452en_HK
dc.identifier.authorityLi, XY=rp00222en_HK
dc.description.naturepostprinten_US
dc.identifier.doi10.1016/j.procbio.2010.08.003en_HK
dc.identifier.scopuseid_2-s2.0-78650245039en_HK
dc.identifier.hkuros188281-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78650245039&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume46en_HK
dc.identifier.issue1en_HK
dc.identifier.spage162en_HK
dc.identifier.epage167en_HK
dc.identifier.isiWOS:000286538300022-
dc.publisher.placeUnited Kingdomen_HK
dc.relation.projectEnvironmental Bio-Nano Interface (EBNI) Characterization System-
dc.identifier.scopusauthoridSun, FY=16064782300en_HK
dc.identifier.scopusauthoridWang, XM=23092524200en_HK
dc.identifier.scopusauthoridLi, XY=26642887900en_HK

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