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Competitive effect of the metallic canister and clay barrier on the sorption of Eu3+ under subcritical conditions

Opened Access Competitive effect of the metallic canister and clay barrier on the sorption of Eu3+ under subcritical conditions

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Autor: El Mrabet, Said
Castro Arroyo, Miguel Ángel
Hurtado Bermúdez, Santiago José
Orta Cuevas, María del Mar
Pazos, Mariana Carolina
Villa Alfageme, María
Fecha: 2014
Publicado en: Applied Geochemistry, 40, 25-31.
Tipo de documento: Artículo
Resumen: An in depth knowledge and understanding of high activity radionuclide (HLRW) immobilization processes on the materials composing the engineered barrier (clay and metallic canister) is required to ensure the safety and the long-term performance of radioactive waste disposal procedures. Therefore, the aim of this study was to understand the mechanisms involved in the retention of Eu3+ by two components of the multibarrier system, the bentonite barrier and the canister. As such, a comparative study of the interaction of trivalent Eu3+, used to simulate trivalent actinides, with both bentonite and a metallic canister has been undertaken in this work. To this end, we designed a minireactor into which the bentonite was introduced and compacted. The minireactor-bentonite system was then submitted to a hydrothermal reaction with a 7.9×10-2M solution of Eu3+ at 300°C for 4.5days. SEM and XRD results revealed that both bentonite and the container were involved in the immobilization of europium ...
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Cita: El Mrabet, S., Castro, M.Á., Hurtado Bermúdez, S.J., Orta Cuevas, M.d.M., Pazos, M.C. y Villa Alfageme, M. (2014). Competitive effect of the metallic canister and clay barrier on the sorption of Eu3+ under subcritical conditions. Applied Geochemistry, 40, 25-31.
Tamaño: 426.1Kb
Formato: PDF

URI: http://hdl.handle.net/11441/64473

DOI: 10.1016/j.apgeochem.2013.10.014

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