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Article: Retention of soluble microbial products in submerged membrane bioreactors

TitleRetention of soluble microbial products in submerged membrane bioreactors
Authors
KeywordsActivated sludge
Free eps
Proteinase
Size fractionation
Wastewater treatment
Issue Date2009
Citation
Desalination And Water Treatment, 2009, v. 6 n. 1-3, p. 131-137 How to Cite?
AbstractThe retention of soluble microbial products (SMP) is significant for the operation of membrane bioreactors (MBRs) from the aspect of both effluent quality and membrane fouling. Constant flux stirred dead-end filtration of a MBR sludge supernatant was conducted. The SMP retention by the membrane is dynamic rather than consistent during filtration. Polysaccharides and proteins are the major components of SMP that are most easily retained by the membrane. The framework of the gel layer is mainly formed from polysaccharides, which controls its permeability. The SMP proteins appear to be trapped in the gel layer by steric and/or adsorptive effects but play little structural role. The underlying mechanism for adsorptive retention may arise from intermolecular electrostatic attraction or chemical complexation involving metal ions. © 2009 Desalination Publications.
Persistent Identifierhttp://hdl.handle.net/10722/132400
ISSN
2015 Impact Factor: 1.272
2015 SCImago Journal Rankings: 0.392
References

 

DC FieldValueLanguage
dc.contributor.authorWang, XMen_HK
dc.contributor.authorDavid Waite, Ten_HK
dc.date.accessioned2011-03-28T09:24:08Z-
dc.date.available2011-03-28T09:24:08Z-
dc.date.issued2009en_HK
dc.identifier.citationDesalination And Water Treatment, 2009, v. 6 n. 1-3, p. 131-137en_HK
dc.identifier.issn1944-3994en_HK
dc.identifier.urihttp://hdl.handle.net/10722/132400-
dc.description.abstractThe retention of soluble microbial products (SMP) is significant for the operation of membrane bioreactors (MBRs) from the aspect of both effluent quality and membrane fouling. Constant flux stirred dead-end filtration of a MBR sludge supernatant was conducted. The SMP retention by the membrane is dynamic rather than consistent during filtration. Polysaccharides and proteins are the major components of SMP that are most easily retained by the membrane. The framework of the gel layer is mainly formed from polysaccharides, which controls its permeability. The SMP proteins appear to be trapped in the gel layer by steric and/or adsorptive effects but play little structural role. The underlying mechanism for adsorptive retention may arise from intermolecular electrostatic attraction or chemical complexation involving metal ions. © 2009 Desalination Publications.en_HK
dc.languageengen_US
dc.relation.ispartofDesalination and Water Treatmenten_HK
dc.subjectActivated sludgeen_HK
dc.subjectFree epsen_HK
dc.subjectProteinaseen_HK
dc.subjectSize fractionationen_HK
dc.subjectWastewater treatmenten_HK
dc.titleRetention of soluble microbial products in submerged membrane bioreactorsen_HK
dc.typeArticleen_HK
dc.identifier.emailWang, XM: wangxm@hku.hken_HK
dc.identifier.authorityWang, XM=rp01452en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-77954185942en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77954185942&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume6en_HK
dc.identifier.issue1-3en_HK
dc.identifier.spage131en_HK
dc.identifier.epage137en_HK
dc.identifier.eissn1944-3986-
dc.identifier.scopusauthoridWang, XM=23092524200en_HK
dc.identifier.scopusauthoridDavid Waite, T=7004869232en_HK

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