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dc.contributor.authorAre, Comfort Temitope
dc.contributor.authorSuleiman, Mohammed Abubakar Tanko
dc.contributor.authorYisa, Jonathan
dc.contributor.authorAuta, Manase
dc.contributor.authorAdekunle, Isaac
dc.date.accessioned2021-04-29T09:51:50Z
dc.date.available2021-04-29T09:51:50Z
dc.date.issued2021
dc.identifier.citationGeoScience Engineering. 2021, vol. 67, no. 1, p. 21–29 : ill.cs
dc.identifier.issn1802-5420
dc.identifier.urihttp://hdl.handle.net/10084/143057
dc.description.abstractThe leaching of dolomite (carbonate mineral of calcium and magnesium) in mineral acid such as HNO3is environmentally friendly withlow energy demands,and it has high capacity of processing both in low and high grade ore. The study ofthe reaction kinetics and mechanism of reaction between dolomite and HNO3 was investigated. The energy-dispersive X-rayspectroscopy (EDS) result showedthatIkpeshidolomite ore consistsof calcium (20.09 %), magnesium (13.93 %) and oxygen (65.99 %). The effect of HNO3concentration between 0.5 and2.5 M on the fraction of dolomite was studied,while the reaction temperature was between30 and70 °C;the reaction time was20 to 60min. Theresults show the fraction of dolomite that reacted in HNO3 increased asthe temperature and concentration increased. Reacted fraction of 0.995was achieved at 50 minreaction time, acid concentration of 2.5M, agitation speed of 250 revolution per minutes (rpm) and reaction temperature of 55 °C. The reaction mechanism followed product layer diffusion control of 1+2(1–x) –3(1–x)2/3= ktwith 0.915 reaction order ofhydrogen ion concentration and activation energy of 26.6 KJmol-1.cs
dc.language.isoencs
dc.publisherVysoká škola báňská-Technická Univerzita Ostravacs
dc.relation.ispartofseriesGeoScience Engineeringcs
dc.relation.urihttp://gse.vsb.cz/ojs/index.php/GSE/article/view/334/225cs
dc.rights© Vysoká škola báňská-Technická Univerzita Ostrava. Hornicko-geologická fakulta
dc.rightsAttribution-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/*
dc.subjectactivation energycs
dc.subjectproduct layer diffusion controlcs
dc.subjectreacted fractioncs
dc.subjectreaction kineticcs
dc.titleKinetic Study of Reaction between Dolomite Ore and Trioxonitrate (V) Acid (HNO3)cs
dc.typearticlecs
dc.identifier.doi10.35180/gse-2021-0048
dc.rights.accessopenAccesscs
dc.type.versionpublishedVersioncs
dc.type.statusPeer-reviewedcs


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© Vysoká škola báňská-Technická Univerzita Ostrava. Hornicko-geologická fakulta
Except where otherwise noted, this item's license is described as © Vysoká škola báňská-Technická Univerzita Ostrava. Hornicko-geologická fakulta