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dc.contributor.authorGibert Agulló, Oriol
dc.contributor.authorValderrama Angel, César Alberto
dc.contributor.authorMartínez Martínez, María del Rosario
dc.contributor.authorDarbra Roman, Rosa Maria
dc.contributor.authorOliva Moncunill, Josep
dc.contributor.authorMartí Gregorio, Vicenç
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC
dc.date.accessioned2021-10-04T12:17:49Z
dc.date.available2021-10-04T12:17:49Z
dc.date.issued2021-05-27
dc.identifier.citationGibert, O. [et al.]. Hydroxyapatite coatings on calcite powder for the removal of heavy metals from contaminated water. "Water", 27 Maig 2021, vol. 13, núm. 11, p. 1493:1-1493:18.
dc.identifier.issn2073-4441
dc.identifier.urihttp://hdl.handle.net/2117/352928
dc.description.abstractAn approach for the remediation of heavy metal-contaminated wastewater that is gaining increasing attention is the application of hydroxyapatite (HAP)-based particles. HAP is conventionally synthesized through wet chemical precipitation of calcium and phosphate ions, although later studies have focused on HAP synthesis from solid calcite contacted with a phosphate solution under ambient conditions. This synthesis route can allow saving soluble Ca-chemicals and, thus, make the process more cost-efficient. The aim of this study was to coat natural calcite powder with a layer of HAP for the removal of Zn and Cu from contaminated water. For this purpose, a HAP layer was synthesized on calcite particles, characterized using several complementary techniques and evaluated for the removal of Zn and Cu from synthetic solutions. Sorption kinetics and equilibrium isotherms, as well as the effect of sonication of the synthesized sample on its sorption performance, were determined. The results showed that calcite particles were efficiently coated with a HAP layer with high capacity in removing Zn and Cu from acidic solutions, with a qmax of 34.97 mg/g for Zn (increased to 37.88 g/mg after sonication of the sample) and 60.24 mg/g for Cu (which hardly varied with sonication). The mechanisms behind the sorption of Zn and Cu onto HAP, inferred from pH changes, the relation between metal uptake and Ca2+ release and XRD analysis, included surface complexation, ion exchange and precipitation of new Zn- and Cu-containing phases
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshWater -- Pollution
dc.subject.otherHydroxyapatite
dc.subject.otherCalcium carbonate
dc.subject.otherCoating
dc.subject.otherHeavy metal sorption
dc.subject.otherGroundwater remediation
dc.titleHydroxyapatite coatings on calcite powder for the removal of heavy metals from contaminated water
dc.typeArticle
dc.subject.lemacAigua -- Contaminació
dc.contributor.groupUniversitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management
dc.contributor.groupUniversitat Politècnica de Catalunya. GREMS - Grup de Recerca en Mineria Sostenible
dc.identifier.doi10.3390/w13111493
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.mdpi.com/2073-4441/13/11/1493
dc.rights.accessOpen Access
local.identifier.drac31977716
dc.description.versionPostprint (published version)
local.citation.authorGibert, O.; Valderrama, C.; Martinez, M.; Darbra, R.M.; Oliva, J.; Martí, V.
local.citation.publicationNameWater
local.citation.volume13
local.citation.number11
local.citation.startingPage1493:1
local.citation.endingPage1493:18


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Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain