Oxidative dissolution of bornite by Acidithiobacillus ferrooxidans

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dc.contributor.authorBevilaqua, D. [UNESP]
dc.contributor.authorGarcia, O. [UNESP]
dc.contributor.authorTuovinen, O. H.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionOhio State Univ
dc.contributor.institutionTampere Univ Technol
dc.date.accessioned2014-05-20T14:17:41Z
dc.date.available2014-05-20T14:17:41Z
dc.date.issued2010-01-01
dc.description.abstractThe oxidation of finely ground (-200 mu m) bornite (Cu(5)FeS(4)) by Acidithiobacillus ferrooxidans was evaluated in oxygen uptake and shake flasks experiments. The oxidation was a net acid-consuming reaction. Residual bornite was not detected by X-fray diffraction in solids after 2 days of contact in acid leach solution, indicating that the chemical and biological oxidation of bornite was relatively fast. Virtually 100% of copper solubilization was achieved in A. ferrooxidans cultures with or without ferrous iron, while in abiotic controls the copper extraction was around 30%. Bornite was not oxidized by Acidithiobacillus thiooxidans in respirometric or shake flasks experiments. Covellite (CuS) was detected as a secondary phase under all experimental conditions. Sulfur and jarosite were formed only in the presence of A. ferrooxidans. (C) 2009 Elsevier Ltd. All rights reserved.en
dc.description.affiliationSão Paulo State Univ, Dept Biochem & Chem Technol, Inst Chem, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationOhio State Univ, Dept Microbiol, Columbus, OH 43210 USA
dc.description.affiliationTampere Univ Technol, Dept Chem & Bioengn, FI-33101 Tampere, Finland
dc.description.affiliationUnespSão Paulo State Univ, Dept Biochem & Chem Technol, Inst Chem, BR-14801970 Araraquara, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipFinnish Funding Agency for Technology and Innovation
dc.description.sponsorshipIdFinnish Funding Agency for Technology and Innovation: 402/06
dc.format.extent101-106
dc.identifierhttp://dx.doi.org/10.1016/j.procbio.2009.08.013
dc.identifier.citationProcess Biochemistry. Oxford: Elsevier B.V., v. 45, n. 1, p. 101-106, 2010.
dc.identifier.doi10.1016/j.procbio.2009.08.013
dc.identifier.issn1359-5113
dc.identifier.urihttp://hdl.handle.net/11449/25301
dc.identifier.wosWOS:000274071200015
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofProcess Biochemistry
dc.relation.ispartofjcr2.616
dc.relation.ispartofsjr0,761
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectAcidithiobacillusen
dc.subjectBorniteen
dc.subjectLeachingen
dc.subjectIron oxidationen
dc.subjectSulfur oxidationen
dc.subjectCovelliteen
dc.titleOxidative dissolution of bornite by Acidithiobacillus ferrooxidansen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Bioquímica e Tecnologia - IQ