File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Surface properties of bacteria from activated sludge in relation to bioflocculation

TitleSurface properties of bacteria from activated sludge in relation to bioflocculation
Authors
Issue Date2010
PublisherI O S Press. The Journal's web site is located at http://www.iospress.nl/html/10010742.php
Citation
Journal Of Environmental Sciences, 2010, v. 22 n. 12, p. 1840-1845 How to Cite?
AbstractTwo bacterial stains were isolated from the activated sludge and identified as Leucobacter sp. and Alcaligenes faecalis by 16S rDNA sequencing. Pure cultures of these two strains, representing well or poorly settled bacteria, were used to investigate the mechanism of bioflocculation in activated sludge. Based on the analyses of the characteristics of cells hydrophobicity, ζ-potential, flocculation ability and extracellular polymeric substance (EPS) composition under different growth stages, it was found that the ratio of cell EPS protein had the highly influence on ζ-potential and hydrophobicity, which were important factors to bioflocculation. Cellulase and Proteinase K could destroy the extracellular biopolymer and resulted in a decrease in the hydrophobicity and ζ-potential. However, in our study, the flocculation characteristics exhibited differently in relation to cellulase and Proteinase K. Flocculation of cells treated with cellulase and Proteinase K decreased sharply, and then recovered quickly in cellulase treatment, while cells treated with Proteinase K showed no sign of recovery. This reveals that the presence of protein in extracellular biopolymer plays an important role to the bioflocculation of cells. © 2010 The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences.
Persistent Identifierhttp://hdl.handle.net/10722/179216
ISSN
2015 Impact Factor: 2.208
2015 SCImago Journal Rankings: 0.832
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXie, Ben_US
dc.contributor.authorGu, Jen_US
dc.contributor.authorLu, Jen_US
dc.date.accessioned2012-12-19T09:53:00Z-
dc.date.available2012-12-19T09:53:00Z-
dc.date.issued2010en_US
dc.identifier.citationJournal Of Environmental Sciences, 2010, v. 22 n. 12, p. 1840-1845en_US
dc.identifier.issn1001-0742en_US
dc.identifier.urihttp://hdl.handle.net/10722/179216-
dc.description.abstractTwo bacterial stains were isolated from the activated sludge and identified as Leucobacter sp. and Alcaligenes faecalis by 16S rDNA sequencing. Pure cultures of these two strains, representing well or poorly settled bacteria, were used to investigate the mechanism of bioflocculation in activated sludge. Based on the analyses of the characteristics of cells hydrophobicity, ζ-potential, flocculation ability and extracellular polymeric substance (EPS) composition under different growth stages, it was found that the ratio of cell EPS protein had the highly influence on ζ-potential and hydrophobicity, which were important factors to bioflocculation. Cellulase and Proteinase K could destroy the extracellular biopolymer and resulted in a decrease in the hydrophobicity and ζ-potential. However, in our study, the flocculation characteristics exhibited differently in relation to cellulase and Proteinase K. Flocculation of cells treated with cellulase and Proteinase K decreased sharply, and then recovered quickly in cellulase treatment, while cells treated with Proteinase K showed no sign of recovery. This reveals that the presence of protein in extracellular biopolymer plays an important role to the bioflocculation of cells. © 2010 The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences.en_US
dc.languageengen_US
dc.publisherI O S Press. The Journal's web site is located at http://www.iospress.nl/html/10010742.phpen_US
dc.relation.ispartofJournal of Environmental Sciencesen_US
dc.subject.meshAlcaligenes Faecalis - Chemistry - Physiology - Ultrastructureen_US
dc.subject.meshBacterial Proteins - Chemistryen_US
dc.subject.meshCarbohydrates - Chemistryen_US
dc.subject.meshCellulaseen_US
dc.subject.meshEndopeptidase Ken_US
dc.subject.meshFlocculationen_US
dc.subject.meshHydrophobic And Hydrophilic Interactionsen_US
dc.subject.meshSewage - Microbiologyen_US
dc.subject.meshSurface Propertiesen_US
dc.titleSurface properties of bacteria from activated sludge in relation to bioflocculationen_US
dc.typeArticleen_US
dc.identifier.emailGu, J: jdgu@hkucc.hku.hken_US
dc.identifier.authorityGu, J=rp00701en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S1001-0742(09)60329-6en_US
dc.identifier.pmid21462699-
dc.identifier.scopuseid_2-s2.0-78649963259en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78649963259&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume22en_US
dc.identifier.issue12en_US
dc.identifier.spage1840en_US
dc.identifier.epage1845en_US
dc.identifier.isiWOS:000285819400002-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridXie, B=15849776300en_US
dc.identifier.scopusauthoridGu, J=7403129601en_US
dc.identifier.scopusauthoridLu, J=26643231600en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats