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Article: Enhanced anoxic bioremediation of PAHs-contaminated sediment

TitleEnhanced anoxic bioremediation of PAHs-contaminated sediment
Authors
Issue Date2012
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/biortech
Citation
Bioresource Technology, 2012, v. 104, p. 51-58 How to Cite?
AbstractIn this study, the biodegradation of 16 polycyclic aromatic hydrocarbons (PAHs) in marine sediment was investigated under three different anoxic conditions, i.e. sulfate-only, nitrate-only and mixed nitrate/sulfate as electron acceptors. All two-, three- and four-ring PAHs showed significant biodegradation with the removal efficiencies ranging from 42% to 77%, while five- and six-ring PAHs showed little degradation. The results illustrated that two- to three-ring PAHs could be degraded at a rate of 4.01×10 -2-6.42×10 -2d -1 under nitrate-reducing condition, faster than that of under sulfate-reducing condition. Biodegradation of two- and three-ring PAHs followed first-order model well with the rate constants of 1.62×10 -2-6.42×10 -2d -1. The biodegradation of four ring PAHs followed the zero-order kinetic model with the rate constants of 1.26×10 -2-2.22×10 -2mg/kg/d. Molecular analysis indicated that nahAc gene increased by two orders of magnitude during the biodegradation and served as a good indicator of PAHs-degrading bacterial population and biodegradation process. © 2011 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/150636
ISSN
2015 Impact Factor: 4.917
2015 SCImago Journal Rankings: 2.303
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong Research Grants CouncilHKU7122/10E
HKU
Funding Information:

The authors wish to thank the Hong Kong Research Grants Council for the financial support of this study (HKU7122/10E), and Xiao-Ying Lu wishes to thank HKU for the postgraduate studentship.

References

 

DC FieldValueLanguage
dc.contributor.authorLu, XYen_US
dc.contributor.authorLi, Ben_US
dc.contributor.authorZhang, Ten_US
dc.contributor.authorFang, HHPen_US
dc.date.accessioned2012-06-26T06:06:20Z-
dc.date.available2012-06-26T06:06:20Z-
dc.date.issued2012en_US
dc.identifier.citationBioresource Technology, 2012, v. 104, p. 51-58en_US
dc.identifier.issn0960-8524en_US
dc.identifier.urihttp://hdl.handle.net/10722/150636-
dc.description.abstractIn this study, the biodegradation of 16 polycyclic aromatic hydrocarbons (PAHs) in marine sediment was investigated under three different anoxic conditions, i.e. sulfate-only, nitrate-only and mixed nitrate/sulfate as electron acceptors. All two-, three- and four-ring PAHs showed significant biodegradation with the removal efficiencies ranging from 42% to 77%, while five- and six-ring PAHs showed little degradation. The results illustrated that two- to three-ring PAHs could be degraded at a rate of 4.01×10 -2-6.42×10 -2d -1 under nitrate-reducing condition, faster than that of under sulfate-reducing condition. Biodegradation of two- and three-ring PAHs followed first-order model well with the rate constants of 1.62×10 -2-6.42×10 -2d -1. The biodegradation of four ring PAHs followed the zero-order kinetic model with the rate constants of 1.26×10 -2-2.22×10 -2mg/kg/d. Molecular analysis indicated that nahAc gene increased by two orders of magnitude during the biodegradation and served as a good indicator of PAHs-degrading bacterial population and biodegradation process. © 2011 Elsevier Ltd.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/biortechen_US
dc.relation.ispartofBioresource Technologyen_US
dc.subject.meshBacteria, Anaerobic - Metabolismen_US
dc.subject.meshBiodegradation, Environmentalen_US
dc.subject.meshGeologic Sediments - Chemistry - Microbiologyen_US
dc.subject.meshPolycyclic Hydrocarbons, Aromatic - Isolation & Purification - Metabolismen_US
dc.subject.meshWater Microbiologyen_US
dc.subject.meshWater Pollutants, Chemical - Isolation & Purification - Metabolismen_US
dc.subject.meshWater Purification - Methodsen_US
dc.titleEnhanced anoxic bioremediation of PAHs-contaminated sedimenten_US
dc.typeArticleen_US
dc.identifier.emailZhang, T:zhangt@hkucc.hku.hken_US
dc.identifier.emailFang, HHP:hrechef@hkucc.hku.hken_US
dc.identifier.authorityZhang, T=rp00211en_US
dc.identifier.authorityFang, HHP=rp00115en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.biortech.2011.10.011en_US
dc.identifier.pmid22104099-
dc.identifier.scopuseid_2-s2.0-84655167294en_US
dc.identifier.hkuros208091-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84655167294&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume104en_US
dc.identifier.spage51en_US
dc.identifier.epage58en_US
dc.identifier.isiWOS:000301155800008-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridLu, XY=39561357500en_US
dc.identifier.scopusauthoridLi, B=36072052100en_US
dc.identifier.scopusauthoridZhang, T=24470677400en_US
dc.identifier.scopusauthoridFang, HHP=7402542625en_US
dc.identifier.citeulike9935593-

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