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dc.contributor.authorSureda Pastor, Rosa María
dc.contributor.authorMartínez Lladó, Xavier
dc.contributor.authorRovira Boixaderas, Miquel
dc.contributor.authorPablo Ribas, Joan de
dc.contributor.authorCasas Pons, Ignasi
dc.contributor.authorGiménez Izquierdo, Francisco Javier
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.identifier.citationSureda, R. [et al.]. Sorption of strontium on uranyl peroxide: implications for a high-level nuclear waste repository. "Journal of hazardous materials", 15 Setembre 2010, vol. 181, núm. 13, p. 881-885.
dc.description.abstractStrontium-90 is considered the most important radioactive isotope in the environment and one of the most frequently occurring radionuclides in groundwaters at nuclear facilities. The uranyl peroxide studtite (UO2O2 center dot 4H(2)O) has been observed to be formed in spent nuclear fuel leaching experiments and seems to have a relatively high sorption capacity for some radionuclides. In this work, the sorption of strontium onto studtite is studied as a function of time. strontium concentration in solution and pH. The main results obtained are (a) sorption is relatively fast although slower than for cesium; (b) strontium seems to be sorbed via a monolayer coverage of the studtite surface, (c) sorption has a strong dependence on ionic strength, is negligible at acidic pH, and increases at neutral to alkaline pH (almost 100% of the strontium in solution is sorbed above pH 10). These results point to uranium secondary solid phase formation on the spent nuclear fuel as an important mechanism for strontium retention in a high-level nuclear waste repository (HLNW). (C) 2010 Elsevier B.V. All rights reserved.
dc.format.extent5 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Desenvolupament humà i sostenible::Política i gestió ambiental::Gestió de residus
dc.subject.lcshRadioactive wastes
dc.subject.otherSpent nuclear fuel
dc.subject.otherHigh-level nuclear waste repository
dc.subject.otherLangmuir isotherm
dc.titleSorption of strontium on uranyl peroxide: implications for a high-level nuclear waste repository
dc.subject.lemacResidus radioactius
dc.contributor.groupUniversitat Politècnica de Catalunya. SETRI - Grup de Tècniques de Separació i Tractament de Residus Industrials
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorSureda, R.; Martinez, X.; Rovira, M.; De Pablo, J.; Casas, I.; Giménez, F.
local.citation.publicationNameJournal of hazardous materials

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Attribution-NonCommercial-NoDerivs 3.0 Spain
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