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Article: Mössbauer hyperfine parameters of iron species in the course of Geobacter-mediated magnetite mineralization

TitleMössbauer hyperfine parameters of iron species in the course of Geobacter-mediated magnetite mineralization
Authors
KeywordsBiomineralization
Green rust
Iron-reducing bacteria
Lepidocrocite
Magnetite
Mössbauer spectroscopy
Issue Date2011
PublisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00269/index.htm
Citation
Physics And Chemistry Of Minerals, 2011, v. 38 n. 9, p. 701-708 How to Cite?
AbstractAmorphous ferric iron species (ferrihydrite or akaganeite of <5 nm in size) is the only known solid ferric iron oxide that can be reductively transformed by dissimilatory iron-reducing bacteria to magnetite completely. The lepidocrocite crystallite can be transformed into magnetite in the presence of abiotic Fe(II) at elevated pH or biogenic Fe(II) with particular growth conditions. The reduction of lepidocrocite by dissimilatory iron-reducing bacteria has been widely investigated showing varying results. Vali et al. (Proc Natl Acad Sci USA 101:16121-16126, 2004) captured a unique biologically mediated mineralization pathway where the amorphous hydrous ferric oxide transformed to lepidocrocite was followed by the complete reduction of lepidocrocite to single-domain magnetite. Here, we report the 57Fe Mössbauer hyperfine parameters of the time-course samples reported in Vali et al. (Proc Natl Acad Sci USA 101:16121-16126, 2004). Both the quadrupole splittings and linewidths of Fe(III) ions decrease consistently with the change of aqueous Fe(II) and transformations of mineral phases, showing the Fe(II)-mediated gradual regulation of the distorted coordination polyhedrons of Fe 3+ during the biomineralization process. The aqueous Fe(II) catalyzes the transformations of Fe(III) minerals but does not enter the mineral structures until the mineralization of magnetite. The simulated abiotic reaction between Fe(II) and lepidocrocite in pH-buffered, anaerobic media shows the simultaneous formation of green rust and its gradual transformation to magnetite plus a small fraction of goethite. We suggested that the dynamics of Fe(II) supply is a critical factor for the mineral transformation in the dissimilatory iron-reducing cultures. © 2011 The Author(s).
Persistent Identifierhttp://hdl.handle.net/10722/144865
ISSN
2015 Impact Factor: 1.585
2015 SCImago Journal Rankings: 0.612
ISI Accession Number ID
Funding AgencyGrant Number
National Science Grant of the United States
Institute for Rock Magnetism, University of Minnesota
State Key Laboratory of Oil and Gas Reservoir Geology ExploitationPLC200903
Funding Information:

We thank Drs Mike Jackson, Peter Solheid, Bruce Moskowitz, Qingsong Liu and Brian Carter-Stiglitz for their kind help in experiments. Mossbauer spectroscopic measurements were supported by the National Science Grant of the United States and the Institute for Rock Magnetism, University of Minnesota. Geobacter metallireducens strain GS-15 was kindly provided by John Coates of the University of California, Berkeley. This study is supported by the State Key Laboratory of Oil and Gas Reservoir Geology & Exploitation (PLC200903).

References

 

DC FieldValueLanguage
dc.contributor.authorLi, YLen_HK
dc.contributor.authorZhu, SYen_HK
dc.contributor.authorDeng, Ken_HK
dc.date.accessioned2012-02-21T05:44:40Z-
dc.date.available2012-02-21T05:44:40Z-
dc.date.issued2011en_HK
dc.identifier.citationPhysics And Chemistry Of Minerals, 2011, v. 38 n. 9, p. 701-708en_HK
dc.identifier.issn0342-1791en_HK
dc.identifier.urihttp://hdl.handle.net/10722/144865-
dc.description.abstractAmorphous ferric iron species (ferrihydrite or akaganeite of <5 nm in size) is the only known solid ferric iron oxide that can be reductively transformed by dissimilatory iron-reducing bacteria to magnetite completely. The lepidocrocite crystallite can be transformed into magnetite in the presence of abiotic Fe(II) at elevated pH or biogenic Fe(II) with particular growth conditions. The reduction of lepidocrocite by dissimilatory iron-reducing bacteria has been widely investigated showing varying results. Vali et al. (Proc Natl Acad Sci USA 101:16121-16126, 2004) captured a unique biologically mediated mineralization pathway where the amorphous hydrous ferric oxide transformed to lepidocrocite was followed by the complete reduction of lepidocrocite to single-domain magnetite. Here, we report the 57Fe Mössbauer hyperfine parameters of the time-course samples reported in Vali et al. (Proc Natl Acad Sci USA 101:16121-16126, 2004). Both the quadrupole splittings and linewidths of Fe(III) ions decrease consistently with the change of aqueous Fe(II) and transformations of mineral phases, showing the Fe(II)-mediated gradual regulation of the distorted coordination polyhedrons of Fe 3+ during the biomineralization process. The aqueous Fe(II) catalyzes the transformations of Fe(III) minerals but does not enter the mineral structures until the mineralization of magnetite. The simulated abiotic reaction between Fe(II) and lepidocrocite in pH-buffered, anaerobic media shows the simultaneous formation of green rust and its gradual transformation to magnetite plus a small fraction of goethite. We suggested that the dynamics of Fe(II) supply is a critical factor for the mineral transformation in the dissimilatory iron-reducing cultures. © 2011 The Author(s).en_HK
dc.languageengen_US
dc.publisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00269/index.htmen_HK
dc.relation.ispartofPhysics and Chemistry of Mineralsen_HK
dc.rightsThe Author(s)en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong Licenseen_US
dc.subjectBiomineralizationen_HK
dc.subjectGreen rusten_HK
dc.subjectIron-reducing bacteriaen_HK
dc.subjectLepidocrociteen_HK
dc.subjectMagnetiteen_HK
dc.subjectMössbauer spectroscopyen_HK
dc.titleMössbauer hyperfine parameters of iron species in the course of Geobacter-mediated magnetite mineralizationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4551/resserv?sid=springerlink&genre=article&atitle=Mössbauer hyperfine parameters of iron species in the course of <i>Geobacter</i>-mediated magnetite mineralization&title=Physics and Chemistry of Minerals&issn=03421791&date=2011-10-01&volume=38&issue=9& spage=701&authors=Yi-Liang Li, San-Yuan Zhu, Kun Dengen_US
dc.identifier.emailLi, YL:yiliang@hkucc.hku.hken_HK
dc.identifier.authorityLi, YL=rp01354en_HK
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1007/s00269-011-0443-2en_HK
dc.identifier.scopuseid_2-s2.0-80053102101en_HK
dc.identifier.hkuros186820-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80053102101&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume38en_HK
dc.identifier.issue9en_HK
dc.identifier.spage701en_HK
dc.identifier.epage708en_HK
dc.identifier.eissn1432-2021en_US
dc.identifier.isiWOS:000297243000005-
dc.publisher.placeGermanyen_HK
dc.description.otherSpringer Open Choice, 21 Feb 2012en_US
dc.identifier.scopusauthoridLi, YL=27171876700en_HK
dc.identifier.scopusauthoridZhu, SY=7404391883en_HK
dc.identifier.scopusauthoridDeng, K=53463575100en_HK
dc.identifier.citeulike9433749-

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