Biocatalytic and chemical leaching of a low-grade nickel laterite ore

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dc.contributor.authorÇiftçi, Hasan
dc.contributor.authorAtik, Süleyman
dc.contributor.authorGürbüz, Fatma
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-16T09:17:07Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-16T09:17:07Z
dc.date.issued2018
dc.departmentMühendislik Fakültesi
dc.description.abstractNickel and cobalt recovery from a low-grade nickel laterite ore, supplied from Caldag deposit (Manisa, Turkey) were investigated by bio and chemical leaching processes. The fungus, Aspergillus niger was used for biocatalytic leaching experiments. The effects of parameters (solid ratio and sucrose concentration) on the biocatalytic leaching of the ore were initially tested in flasks to obtain the optimum conditions for the A. niger. Then chemical leaching was applied as a comparison to bioleaching, using organic acids (citric, oxalic, acetic and gluconic acids) as well as a mixture of acids. According the results, the maximum dissolution yield of nickel, cobalt and iron were detected respectively as 95.3%, 74.3% and 50.0% by biocatalytic processes which containing 25% (w/v) sucrose and 1% (w/v) solids. The increase in the solid ratio adversely influenced the biocatalytic activity of A. niger. Finally, further tests in reactors (v=1 and 10 L) were performed using the optimum conditions from the flask tests. The difference in metals recovery between biocatalytic and chemical leaching was significantly important. Bioleaching produced higher Ni and Co extractions (34.3-75.6%) than chemical process.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK), Turkey [MAG-213M593]; SDU Research Project Foundation, Turkey [3716-YL1-13]
dc.description.sponsorshipThis work was fully supported by the Scientific and Technological Research Council of Turkey (TUBITAK), Turkey (Project No.: MAG-213M593) and SDU Research Project Foundation, Turkey (Project No.: 3716-YL1-13). Authors gratefully acknowledge SDU Research and Application Center for Geothermal Energy, Groundwater and Mineral Resource, Isparta, Turkey for XRD analysis.
dc.identifier.doi10.1051/metal/2018006
dc.identifier.issn2271-3646
dc.identifier.issn2271-3654
dc.identifier.issue3en_US
dc.identifier.scopusqualityQ3
dc.identifier.urihttps://doi.org/10.1051/metal/2018006
dc.identifier.urihttps://hdl.handle.net/20.500.12451/4704
dc.identifier.volume115en_US
dc.identifier.wosWOS:000431466100003
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherEDP Sciences
dc.relation.ispartofMETALLURGICAL RESEARCH & TECHNOLOGY
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectBiocatalytic Activity
dc.subjectChemical Leaching
dc.subjectAspergillus Niger
dc.subjectLateritic Ore
dc.subjectNickel
dc.titleBiocatalytic and chemical leaching of a low-grade nickel laterite ore
dc.typeArticle

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