Kinetics of galena dissolution in nitric acid solutions with hydrogen peroxide

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dc.contributor.authorAydogan, Salih
dc.contributor.authorErdemoglu, Murat
dc.contributor.authorUcar, Goekhan
dc.contributor.authorAras, Ali
dc.date.accessioned2020-03-26T17:17:36Z
dc.date.available2020-03-26T17:17:36Z
dc.date.issued2007
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe extraction of lead from a galena concentrate in nitric acid solutions with additional hydrogen peroxide was studied taking stirring speed, temperature, hydrogen peroxide and nitric acid concentrations, and particle size as dissolution parameters. The dissolution curves followed the surface chemical reaction controlled shrinking core model over the whole range of parameters, except at high nitric acid concentrations where the reaction was diffusion-control led. The activation energy of 42 KJ mol(-1) and a linear relationship between rate and inverse particle size support the reaction controlled dissolution mechanism. Hydrogen peroxide addition accelerated the reaction compared with nitric acid alone. It was concluded that the dissolution process is favourable, since the acid consumed for oxidation of galena can easily be regenerated in the same reactor by means of hydrogen peroxide. (c) 2007 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.hydromet.2007.03.005en_US
dc.identifier.endpage57en_US
dc.identifier.issn0304-386Xen_US
dc.identifier.issue01.04.2020en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage52en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.hydromet.2007.03.005
dc.identifier.urihttps://hdl.handle.net/20.500.12395/21450
dc.identifier.volume88en_US
dc.identifier.wosWOS:000248880500005en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.relation.ispartofHYDROMETALLURGYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectgalenaen_US
dc.subjectnitric aciden_US
dc.subjecthydrogen peroxideen_US
dc.subjectdissolutionen_US
dc.subjectshrinking core modelen_US
dc.titleKinetics of galena dissolution in nitric acid solutions with hydrogen peroxideen_US
dc.typeArticleen_US

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