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Article: The effect of nitrate concentration on sulfide-driven autotrophic denitrification in marine sediment

TitleThe effect of nitrate concentration on sulfide-driven autotrophic denitrification in marine sediment
Authors
KeywordsAutotrophic denitrification
Nitrate concentration
Sediment
Sulfurimonas denitrificans
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/chemosphere
Citation
Chemosphere, 2011, v. 83 n. 1, p. 1-6 How to Cite?
AbstractThe effect of nitrate concentration on denitrification rate, microbial community and byproduct accumulation in sulfide-driven autotrophic denitrification, one of the dominant processes during anoxic marine sediment remediation, was investigated in this study. Microorganisms which were phylogenetically closely related with Sulfurimonas denitrificans of ε-Proteobacteria and Thiohalomonas denitrificans of γ-Proteobacteria were the major autotrophic denitrifiers in this study. Nitrate concentration was demonstrated to have selective effect on denitrifying microbial community as revealed by denaturing gradient gel electrophoresis. Denitrifiers enriched at 30mM NO3- have higher diversity than other two groups (10, and 80mM NO3-) according to Shannon index. Denitrification showed zero-order reaction kinetics when nitrate concentration was higher than 4mM. Neither absolute nitrate concentration nor overall nitrate/sulfide ratio acted as the determinant for denitrification byproduct (i.e. N2O and NO2-) accumulation. The limitation of sulfide due to low mass transfer might be the reason for the byproduct accumulation. © 2011 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/139040
ISSN
2015 Impact Factor: 3.698
2015 SCImago Journal Rankings: 1.536
ISI Accession Number ID
Funding AgencyGrant Number
RGC of Hong KongHKU7122/10E
Funding Information:

This study was partially supported by RGC (HKU7122/10E) of Hong Kong. Dr. Ming-Fei Shao wishes to thank HKU for the postdoctoral fellowship.

References

 

DC FieldValueLanguage
dc.contributor.authorShao, MFen_HK
dc.contributor.authorZhang, Ten_HK
dc.contributor.authorFang, HHPen_HK
dc.contributor.authorLi, Xen_HK
dc.date.accessioned2011-09-23T05:44:32Z-
dc.date.available2011-09-23T05:44:32Z-
dc.date.issued2011en_HK
dc.identifier.citationChemosphere, 2011, v. 83 n. 1, p. 1-6en_HK
dc.identifier.issn0045-6535en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139040-
dc.description.abstractThe effect of nitrate concentration on denitrification rate, microbial community and byproduct accumulation in sulfide-driven autotrophic denitrification, one of the dominant processes during anoxic marine sediment remediation, was investigated in this study. Microorganisms which were phylogenetically closely related with Sulfurimonas denitrificans of ε-Proteobacteria and Thiohalomonas denitrificans of γ-Proteobacteria were the major autotrophic denitrifiers in this study. Nitrate concentration was demonstrated to have selective effect on denitrifying microbial community as revealed by denaturing gradient gel electrophoresis. Denitrifiers enriched at 30mM NO3- have higher diversity than other two groups (10, and 80mM NO3-) according to Shannon index. Denitrification showed zero-order reaction kinetics when nitrate concentration was higher than 4mM. Neither absolute nitrate concentration nor overall nitrate/sulfide ratio acted as the determinant for denitrification byproduct (i.e. N2O and NO2-) accumulation. The limitation of sulfide due to low mass transfer might be the reason for the byproduct accumulation. © 2011 Elsevier Ltd.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/chemosphereen_HK
dc.relation.ispartofChemosphereen_HK
dc.subjectAutotrophic denitrificationen_HK
dc.subjectNitrate concentrationen_HK
dc.subjectSedimenten_HK
dc.subjectSulfurimonas denitrificansen_HK
dc.subject.meshBacteria - classification - genetics - metabolism-
dc.subject.meshGeologic Sediments - chemistry - microbiology-
dc.subject.meshNitrates - analysis - metabolism-
dc.subject.meshSulfides - metabolism-
dc.subject.meshWater Pollutants, Chemical - analysis - metabolism-
dc.titleThe effect of nitrate concentration on sulfide-driven autotrophic denitrification in marine sedimenten_HK
dc.typeArticleen_HK
dc.identifier.emailZhang, T:zhangt@hkucc.hku.hken_HK
dc.identifier.emailFang, HHP:hrechef@hkucc.hku.hken_HK
dc.identifier.authorityZhang, T=rp00211en_HK
dc.identifier.authorityFang, HHP=rp00115en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.chemosphere.2011.01.042en_HK
dc.identifier.pmid21316076-
dc.identifier.scopuseid_2-s2.0-79951852805en_HK
dc.identifier.hkuros192705en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79951852805&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume83en_HK
dc.identifier.issue1en_HK
dc.identifier.spage1en_HK
dc.identifier.epage6en_HK
dc.identifier.eissn1879-1298-
dc.identifier.isiWOS:000288734900001-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridShao, MF=36656379800en_HK
dc.identifier.scopusauthoridZhang, T=24470677400en_HK
dc.identifier.scopusauthoridFang, HHP=7402542625en_HK
dc.identifier.scopusauthoridLi, X=38461413700en_HK

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