Addition of Al2O3 nanoparticles to bentonite: effects on surface charge and Cd sorption properties

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dc.contributor.authorMayordomo, Natalia
dc.contributor.authorAlonso, Ursula
dc.contributor.authorMissana, Tiziana
dc.contributor.authorBenedicto, Ana
dc.contributor.authorGarcía-Gutiérrez, Miguel
dc.date.accessioned2024-08-13T14:30:58Z
dc.date.available2024-08-13T14:30:58Z
dc.date.issued2014
dc.description.abstractCompacted bentonite barrier in radioactive waste repositories is expected to prevent radionuclide migration, due to its high sorption capability for many radionuclides. This study analyses whether the addition of Al2O3 nanoparticles (NPs) enhances the sorption properties of bentonite. The study was carried out with Cd, highly pollutant heavy metal and divalent fission product. Sorption experiments were conducted in NaClO4 at different ionic strengths (5·10-4 to 10-1 M) and pH (2 to 10), using mixtures ofsodium homoionised bentonite and Al2O3 in different proportions. 1t has been probed that addition of Al2O3 NPs to bentonite enhances Cd sorption at pH higher than 6. The effect of Al2O3 NPs addition on the surface properties ofbentonite colloids was also analyzed by measuring particle size and surface charge in all studied systems.es_ES
dc.description.sponsorshipThe research leading to these results has been received from the Spanish government under the NANOBAG (CTM2011-27975) project. N. Mayordomo acknowledge the FPI BES-2012-056603 grant from MINECO.es_ES
dc.identifier.citationN. Mayordomo, U.Alonso, T. Missana, A. Benedicto, M. García-Gutiérrez, Addition of Al2O3 nanoparticles to bentonite: effects on surface charge and Cd sorption properties, Mater. Res. Soc. Symp. Proc, Vol 1665 (2014)es_ES
dc.identifier.doihttp://dx.doi.org/10.1557/opl.2014.638
dc.identifier.urihttps://hdl.handle.net/20.500.14855/3277
dc.language.isoenges_ES
dc.publisherMaterial Research Societyes_ES
dc.rights.accessRightsembargoed accesses_ES
dc.subjectAluminaes_ES
dc.subjectNanoparticleses_ES
dc.subjectCdes_ES
dc.subjectAdsorptiones_ES
dc.titleAddition of Al2O3 nanoparticles to bentonite: effects on surface charge and Cd sorption propertieses_ES
dc.typejournal articlees_ES

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