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dc.creatorRakhila, Younesses_ES
dc.creatorElmchaouri, Abdellahes_ES
dc.creatorMestari, Allales_ES
dc.creatorKorili, Sophia A.es_ES
dc.creatorAbouri, Meriemes_ES
dc.creatorGil Bravo, Antonioes_ES
dc.date.accessioned2020-04-14T09:32:09Z
dc.date.available2020-04-14T09:32:09Z
dc.date.issued2019
dc.identifier.issn1674-4799
dc.identifier.urihttps://hdl.handle.net/2454/36713
dc.description.abstractThe aim of this work is to investigate the ability of an adsorbent of a clay mineral composite to remove and recover gold and silver ions from wastewater. The composite was prepared by mixing phosphogypsum (PG), obtained from an industrial waste, and a natural clay mineral. The materials were characterized before and after use in adsorption by several techniques. Batch adsorption experiments were carried out, and the effects of the contact time and the pH and temperature of solution on the removal processes were investigated. The optimum pH for the adsorption was found to be 4. The adsorption of these metal ions reached equilibrium after 2 h of contact. The pseudo-first- and the pseudo-second-order kinetic models, as well as the Freundlich and the Langmuir isotherm equations, were considered to describe the adsorption results. The maximum adsorbed amount of 85 mg·g−1 Ag(I) and 108.3 mg·g−1 Au(III) was found. The recovery of the adsorbed gold and silver ions from the adsorbent was also analyzed. Strong acids appeared to be the best desorption agents to recover gold and silver ions. The use of aqua regia gave regeneration rates close to 95.3% and 94.3% for Ag(I) and Au(III), respectively. Finally, the removal of gold and silver ions from an industrial wastewater was tested in batch experiments, and percentage recoveries of 76.5% and 79.9% for Ag(I) and Au(III), respectively, were obtained. To carry out the industrial application of the proposed methodology, an economic viability study is required.en
dc.description.sponsorshipGil thanks Santander Bank for funding through the Research Intensification Program.en
dc.format.extent27 p.
dc.format.mimetypeapplication/pdfen
dc.language.isoengen
dc.publisherUniversity of Science and Technology Beijingen
dc.publisherSpringeren
dc.relation.ispartofInternational Journal of Minerals, Metallurgy and Materials, 2019, 26 (6), 673-680en
dc.rights© University of Science and Technology Beijing and Springer-Verlag GmbH Germany, part of Springer Nature 2019en
dc.subjectAdsorptionen
dc.subjectClay compositeen
dc.subjectGolden
dc.subjectIndustrial wastewateren
dc.subjectSilveren
dc.titleAdsorption recovery of Ag(I) and Au(III) from an electronics industry wastewater on a clay mineral compositeen
dc.typeinfo:eu-repo/semantics/articleen
dc.typeArtículo / Artikuluaes
dc.contributor.departmentUniversidad Pública de Navarra. Departamento de Cienciases_ES
dc.contributor.departmentNafarroako Unibertsitate Publikoa. Zientziak Sailaeu
dc.contributor.departmentUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. INAMAT2 - Institute for Advanced Materials and Mathematicses_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.identifier.doi10.1007/s12613-019-1777-x
dc.relation.publisherversionhttps://doi.org/10.1007/s12613-019-1777-x
dc.type.versioninfo:eu-repo/semantics/acceptedVersionen
dc.type.versionVersión aceptada / Onetsi den bertsioaes


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