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Estudo da dissolução oxidativa microbiológica de uma complexa amostra mineral contendo pirita (FeS2), pirrotita (Fe 1-XS) e molibdenita (MoS2)

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dc.contributor.authorFrancisco Júnior, Wilmo E. [UNESP]
dc.contributor.authorBevilaqua, Denise [UNESP]
dc.contributor.authorGarcia Júnior, Oswaldo[UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:22:34Z
dc.date.available2014-05-27T11:22:34Z
dc.date.issued2007-09-01
dc.description.abstractThis work aims to study the oxidation of a complex molybdenite mineral which contains pyrite and pyrrotite, by Acidithiobacillus ferrooxidans. This study was performed by respirometric essays and bioleaching in shake flasks. Respirometric essays yielded the kinetics of mineral oxidation. The findings showed that sulfide oxidation followed classical Michaelis-Menten kinetics. Bioleaching in shake flasks allowed evaluation of chemical and mineralogical changes resulting from sulfide oxidation. The results demonstrated that pyrrotite and pyrite were completely oxidized in A. ferrooxidans cultures whereas molybdenite was not consumed. These data indicated that molybdenite was the most recalcitrant sulfide in the sample.en
dc.description.affiliationDepartamento de Bioquímica e Tecnologia Química Instituto de Química Universidade Estadual Paulista, CP 355, 14801-970 Araraquara - SP
dc.description.affiliationUnespDepartamento de Bioquímica e Tecnologia Química Instituto de Química Universidade Estadual Paulista, CP 355, 14801-970 Araraquara - SP
dc.format.extent1095-1099
dc.identifierhttp://dx.doi.org/10.1590/S0100-40422007000500008
dc.identifier.citationQuimica Nova, v. 30, n. 5, p. 1095-1099, 2007.
dc.identifier.doi10.1590/S0100-40422007000500008
dc.identifier.file2-s2.0-36148980445.pdf
dc.identifier.issn0100-4042
dc.identifier.issn1678-7064
dc.identifier.scieloS0100-40422007000500008
dc.identifier.scopus2-s2.0-36148980445
dc.identifier.urihttp://hdl.handle.net/11449/69842
dc.identifier.wosWOS:000249501000008
dc.language.isopor
dc.relation.ispartofQuímica Nova
dc.relation.ispartofjcr0.646
dc.relation.ispartofsjr0,255
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectA. ferrooxidans
dc.subjectBioleaching
dc.subjectMineral sulfides
dc.titleEstudo da dissolução oxidativa microbiológica de uma complexa amostra mineral contendo pirita (FeS2), pirrotita (Fe 1-XS) e molibdenita (MoS2)pt
dc.title.alternativeMicrobiological oxidative dissolution of a complex mineral sample containing pyrite (FeS2), pyrrotite (Fe1-XS) and molybdenite (MoS2)en
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/qn/paboutj.htm#03
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentBioquímica e Tecnologia - IQpt

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