File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Reduction of chromate (CrO4 2-) by an enrichment consortium and an isolate of marine sulfate-reducing bacteria

TitleReduction of chromate (CrO4 2-) by an enrichment consortium and an isolate of marine sulfate-reducing bacteria
Authors
Issue Date2003
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/chemosphere
Citation
Chemosphere, 2003, v. 52 n. 9, p. 1523-1529 How to Cite?
AbstractAn enrichment consortium and an isolate (isolate TKW) of sulfate-reducing bacteria (SRB) have been obtained from metal-contaminated marine sediments of Tokwawan, Hong Kong SAR. These bacteria are capable of reducing highly toxic and soluble hexavalent chromium (Cr6+) enzymatically into less toxic and insoluble trivalent chromium (Cr3+) under anaerobic conditions. The enrichment consortium almost completely (98.5%) reduced 0.6 mM Cr6+ in 168 h and the rate of reduction was 0.5 g (Cr6+) g (protein) -1 h-1. In comparison, with Cr6+ as the sole electron acceptor (as a surrogate for SO4 2-), isolate TKW reduced 94.5% of the initially added Cr6+ (0.36 mM) in 288 h, with the rate of 0.26 g (Cr6+) g (protein)-1 h-1. Adsorption by these bacteria was not the major mechanism contributing to the transformation or removal of Cr6+. The biomass and Cr3+ in the cultures increased simultaneously with the reduction of Cr6+. These indigenous SRB might have potential application in bioremediation of metal contaminated sediments. © 2003 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/178844
ISSN
2015 Impact Factor: 3.698
2015 SCImago Journal Rankings: 1.536
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCheung, KHen_US
dc.contributor.authorGu, JDen_US
dc.date.accessioned2012-12-19T09:50:05Z-
dc.date.available2012-12-19T09:50:05Z-
dc.date.issued2003en_US
dc.identifier.citationChemosphere, 2003, v. 52 n. 9, p. 1523-1529en_US
dc.identifier.issn0045-6535en_US
dc.identifier.urihttp://hdl.handle.net/10722/178844-
dc.description.abstractAn enrichment consortium and an isolate (isolate TKW) of sulfate-reducing bacteria (SRB) have been obtained from metal-contaminated marine sediments of Tokwawan, Hong Kong SAR. These bacteria are capable of reducing highly toxic and soluble hexavalent chromium (Cr6+) enzymatically into less toxic and insoluble trivalent chromium (Cr3+) under anaerobic conditions. The enrichment consortium almost completely (98.5%) reduced 0.6 mM Cr6+ in 168 h and the rate of reduction was 0.5 g (Cr6+) g (protein) -1 h-1. In comparison, with Cr6+ as the sole electron acceptor (as a surrogate for SO4 2-), isolate TKW reduced 94.5% of the initially added Cr6+ (0.36 mM) in 288 h, with the rate of 0.26 g (Cr6+) g (protein)-1 h-1. Adsorption by these bacteria was not the major mechanism contributing to the transformation or removal of Cr6+. The biomass and Cr3+ in the cultures increased simultaneously with the reduction of Cr6+. These indigenous SRB might have potential application in bioremediation of metal contaminated sediments. © 2003 Elsevier Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/chemosphereen_US
dc.relation.ispartofChemosphereen_US
dc.subject.meshAdsorptionen_US
dc.subject.meshChromates - Chemistry - Metabolismen_US
dc.subject.meshGeologic Sediments - Chemistryen_US
dc.subject.meshMicroscopy, Electron, Scanningen_US
dc.subject.meshOxidation-Reductionen_US
dc.subject.meshProteins - Analysisen_US
dc.subject.meshSulfates - Chemistryen_US
dc.subject.meshSulfur-Reducing Bacteria - Isolation & Purification - Metabolismen_US
dc.titleReduction of chromate (CrO4 2-) by an enrichment consortium and an isolate of marine sulfate-reducing bacteriaen_US
dc.typeArticleen_US
dc.identifier.emailGu, JD: jdgu@hkucc.hku.hken_US
dc.identifier.authorityGu, JD=rp00701en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S0045-6535(03)00491-0en_US
dc.identifier.pmid12867184-
dc.identifier.scopuseid_2-s2.0-0642313868en_US
dc.identifier.hkuros86508-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0642313868&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume52en_US
dc.identifier.issue9en_US
dc.identifier.spage1523en_US
dc.identifier.epage1529en_US
dc.identifier.isiWOS:000184563200023-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridCheung, KH=7402406659en_US
dc.identifier.scopusauthoridGu, JD=7403129601en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats