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- Publisher Website: 10.1016/S1001-0742(09)60329-6
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- PMID: 21462699
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Article: Surface properties of bacteria from activated sludge in relation to bioflocculation
Title | Surface properties of bacteria from activated sludge in relation to bioflocculation |
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Authors | |
Keywords | Activated sludge Bioflocculation Hydrophobicity Pure culture ζ-potential |
Issue Date | 2010 |
Publisher | I 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? |
Abstract | Two 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 Identifier | http://hdl.handle.net/10722/179216 |
ISSN | 2023 Impact Factor: 5.9 2023 SCImago Journal Rankings: 1.422 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Xie, B | en_US |
dc.contributor.author | Gu, J | en_US |
dc.contributor.author | Lu, J | en_US |
dc.date.accessioned | 2012-12-19T09:53:00Z | - |
dc.date.available | 2012-12-19T09:53:00Z | - |
dc.date.issued | 2010 | en_US |
dc.identifier.citation | Journal Of Environmental Sciences, 2010, v. 22 n. 12, p. 1840-1845 | en_US |
dc.identifier.issn | 1001-0742 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/179216 | - |
dc.description.abstract | Two 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.language | eng | en_US |
dc.publisher | I O S Press. The Journal's web site is located at http://www.iospress.nl/html/10010742.php | en_US |
dc.relation.ispartof | Journal of Environmental Sciences | en_US |
dc.subject | Activated sludge | - |
dc.subject | Bioflocculation | - |
dc.subject | Hydrophobicity | - |
dc.subject | Pure culture | - |
dc.subject | ζ-potential | - |
dc.subject.mesh | Alcaligenes Faecalis - Chemistry - Physiology - Ultrastructure | en_US |
dc.subject.mesh | Bacterial Proteins - Chemistry | en_US |
dc.subject.mesh | Carbohydrates - Chemistry | en_US |
dc.subject.mesh | Cellulase | en_US |
dc.subject.mesh | Endopeptidase K | en_US |
dc.subject.mesh | Flocculation | en_US |
dc.subject.mesh | Hydrophobic And Hydrophilic Interactions | en_US |
dc.subject.mesh | Sewage - Microbiology | en_US |
dc.subject.mesh | Surface Properties | en_US |
dc.title | Surface properties of bacteria from activated sludge in relation to bioflocculation | en_US |
dc.type | Article | en_US |
dc.identifier.email | Gu, J: jdgu@hkucc.hku.hk | en_US |
dc.identifier.authority | Gu, J=rp00701 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1016/S1001-0742(09)60329-6 | en_US |
dc.identifier.pmid | 21462699 | - |
dc.identifier.scopus | eid_2-s2.0-78649963259 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-78649963259&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 22 | en_US |
dc.identifier.issue | 12 | en_US |
dc.identifier.spage | 1840 | en_US |
dc.identifier.epage | 1845 | en_US |
dc.identifier.isi | WOS:000285819400002 | - |
dc.publisher.place | Netherlands | en_US |
dc.identifier.scopusauthorid | Xie, B=15849776300 | en_US |
dc.identifier.scopusauthorid | Gu, J=7403129601 | en_US |
dc.identifier.scopusauthorid | Lu, J=26643231600 | en_US |
dc.identifier.issnl | 1001-0742 | - |