Role of inorganic colloids generated in a high-level deep geological repository in the migration of radionuclides: Open questions

Contribuyen los coloides al transporte de radionucleidos (RN) en un almacenamiento de residuos radiactivos de alta actividad? Lo cierto es que durante las ultimas decadas multitud de estudios, tanto teoricos como experimentales, a escala de laboratorio e in-situ, se han dedicado a intentar dar una respuesta a esta pregunta. A pesar de los esfuerzos dedicados, existen todavia grandes incertidumbres y por ello, la mayoria de los estudios de evaluacion de comportamiento (PA) de un almacenamiento no incluyen el efecto que los coloides pueden tener en el transporte de RN, basicamente por la escasez de datos cuantitativos al respecto. El objetivo de este trabajo es hacer una revision de los distintos estudios llevados a cabo los ultimos anos para elucidar el papel que juegan los coloides en el transporte de RN, prestando particular atencion a los coloides de bentonita, que pueden generarse en la interfaz bentonita/roca de un almacenamiento. Se destacaran las principales incertidumbres asociadas, y los estudios y proyectos que actualmente se estan realizando, haciendo hincapie en las futuras estrategias de investigacion en esta area.

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