Removal of heavy metals from aqueous solutions by adsorption on zeolites synthesized from aluminum saline slags

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dc.contributor.authorJiménez, Alejandro
dc.contributor.authorTrujillano, Raquel
dc.contributor.authorRives, Vicente
dc.contributor.authorVicente, Miguel Ángel
dc.contributor.authorGil Bravo, Antonio
dc.contributor.departmentCienciases_ES
dc.contributor.departmentZientziakeu
dc.contributor.departmentInstitute for Advanced Materials and Mathematics - INAMAT2en
dc.date.accessioned2024-12-04T12:34:24Z
dc.date.available2024-12-04T12:34:24Z
dc.date.issued2024-10-31
dc.date.updated2024-12-04T12:19:32Z
dc.description.abstractThree heavy metals (Cu2+, Cd2+ and Pb2+) were removed from aqueous solutions using zeolites prepared from saline slags, a very important waste generated during aluminum recycling. Zeolites were characterized by powder X-ray diffraction, thermal analysis, Fourier transform infrared spectroscopy, X-ray microfluorescence, element chemical analysis, nitrogen adsorption at -196 °C and electron microscopy. The textural and structural properties of X-type faujasite zeolite convert it in a promising adsorbent in aqueous streams. Removal of the heavy metals was evaluated in batch mode, studying the adsorbent dose, the initial concentration of the heavy metal, the selectivity of the solid in case of mixtures with various metal cations and the recyclability of the solid. The kinetic and equilibrium results were evaluated using both pseudo-first- and pseudo-second-order kinetics, and Langmuir, Freundlich and Toth equation isotherms for the equilibrium. The time needed to reach equilibrium was between 10 and 20 min. Faujasite was highly effective in removing Cu2+, Cd2+ and Pb2+ from aqueous solutions, much higher than analcime and pollucite, other two zeolites recently synthesized by us from aluminum slags, and used in this work for comparison purposes. The maximum adsorption capacity was 591 mg/g for Pb2+, 304 mg/g for Cu2+ and 279 mg/g for Cd2+.en
dc.description.sponsorshipThis research was funded by Spanish Ministry of Science, Innovation and Universities through Spanish Research Agency (Reference PID2023-146935OB-C21 and PID2023-146935OB-C22). AG is also grateful for financial support from the Spanish Ministry of Science and Innovation (MCIN/AEI/10.13039/501100011033) through project PID2020-112656RB-C21.
dc.format.mimetypeapplication/pdfen
dc.identifier.citationJimenez, A., Trujillano, R., Rives, V., Vicente, M. A., Gil, A. (2024) Removal of heavy metals from aqueous solutions by adsorption on zeolites synthesized from aluminum saline slags. Inorganic Chemistry Communications, 170, 1-12. https://doi.org/10.1016/j.inoche.2024.113440
dc.identifier.doi10.1016/j.inoche.2024.113440
dc.identifier.issn1387-7003
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/52644
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofInorganic Chemistry Communications, 170(3), 1-12.
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2023-146935OB-C21/
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2023-146935OB-C22/
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112656RB-C21/ES/
dc.relation.publisherversionhttps://doi.org/10.1016/j.inoche.2024.113440
dc.rights© 2024 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAluminum saline slagsen
dc.subjectIndustrial waste recoveryen
dc.subjectZeolitic materialsen
dc.subjectX-type faujasite zeoliteen
dc.subjectAnalcimeen
dc.subjectPolluciteen
dc.titleRemoval of heavy metals from aqueous solutions by adsorption on zeolites synthesized from aluminum saline slagsen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
relation.isAuthorOfPublicationcd12e590-cb42-47d5-a642-f60eeee624ec
relation.isAuthorOfPublication.latestForDiscoverycd12e590-cb42-47d5-a642-f60eeee624ec

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