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- Publisher Website: 10.1016/S0045-6535(03)00491-0
- Scopus: eid_2-s2.0-0642313868
- PMID: 12867184
- WOS: WOS:000184563200023
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Article: Reduction of chromate (CrO4 2-) by an enrichment consortium and an isolate of marine sulfate-reducing bacteria
Title | Reduction of chromate (CrO4 2-) by an enrichment consortium and an isolate of marine sulfate-reducing bacteria |
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Authors | |
Keywords | Bioremediation Hexavalent chromium Marine enrichment consortium Metal reduction Sole electron acceptor Sulfate-reducing bacteria |
Issue Date | 2003 |
Publisher | Pergamon. 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? |
Abstract | An 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 Identifier | http://hdl.handle.net/10722/178844 |
ISSN | 2023 Impact Factor: 8.1 2023 SCImago Journal Rankings: 1.806 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Cheung, KH | en_US |
dc.contributor.author | Gu, JD | en_US |
dc.date.accessioned | 2012-12-19T09:50:05Z | - |
dc.date.available | 2012-12-19T09:50:05Z | - |
dc.date.issued | 2003 | en_US |
dc.identifier.citation | Chemosphere, 2003, v. 52 n. 9, p. 1523-1529 | en_US |
dc.identifier.issn | 0045-6535 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/178844 | - |
dc.description.abstract | An 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.language | eng | en_US |
dc.publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/chemosphere | en_US |
dc.relation.ispartof | Chemosphere | en_US |
dc.subject | Bioremediation | - |
dc.subject | Hexavalent chromium | - |
dc.subject | Marine enrichment consortium | - |
dc.subject | Metal reduction | - |
dc.subject | Sole electron acceptor | - |
dc.subject | Sulfate-reducing bacteria | - |
dc.subject.mesh | Adsorption | en_US |
dc.subject.mesh | Chromates - Chemistry - Metabolism | en_US |
dc.subject.mesh | Geologic Sediments - Chemistry | en_US |
dc.subject.mesh | Microscopy, Electron, Scanning | en_US |
dc.subject.mesh | Oxidation-Reduction | en_US |
dc.subject.mesh | Proteins - Analysis | en_US |
dc.subject.mesh | Sulfates - Chemistry | en_US |
dc.subject.mesh | Sulfur-Reducing Bacteria - Isolation & Purification - Metabolism | en_US |
dc.title | Reduction of chromate (CrO4 2-) by an enrichment consortium and an isolate of marine sulfate-reducing bacteria | en_US |
dc.type | Article | en_US |
dc.identifier.email | Gu, JD: jdgu@hkucc.hku.hk | en_US |
dc.identifier.authority | Gu, JD=rp00701 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1016/S0045-6535(03)00491-0 | en_US |
dc.identifier.pmid | 12867184 | - |
dc.identifier.scopus | eid_2-s2.0-0642313868 | en_US |
dc.identifier.hkuros | 86508 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0642313868&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 52 | en_US |
dc.identifier.issue | 9 | en_US |
dc.identifier.spage | 1523 | en_US |
dc.identifier.epage | 1529 | en_US |
dc.identifier.isi | WOS:000184563200023 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Cheung, KH=7402406659 | en_US |
dc.identifier.scopusauthorid | Gu, JD=7403129601 | en_US |
dc.identifier.issnl | 0045-6535 | - |