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Swedish-German actinide migration experiment at ASPO hard rock laboratory
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2003 (English)In: Journal of Contaminant Hydrology, ISSN 0169-7722, E-ISSN 1873-6009, Vol. 61, no 04-jan, 219-233 p.Article in journal (Refereed) Published
Abstract [en]

Within the scope of a bilateral cooperation between Svensk Karnbranslehantering (SKB) and Forschungszentrum Karlsruhe, Institut fur Nukleare Entsorgung (FZK-INE), an actinide migration experiment is currently being performed at the Aspo Hard Rock Laboratory (HRL) in Sweden. This paper covers laboratory and in situ investigations on actinide migration in single-fractured granite core samples. For the in situ experiment, the CHEMLAB 2 probe developed by SKB was used. The experimental setup as well as the breakthrough of inert tracers and of the actinides Am, Np and Pu are presented. The breakthrough curves of inert tracers were analyzed to determine hydraulic properties of the fractured samples. Postmortem analyses of the solid samples were performed to characterize the flow path and the sorbed actinides. After cutting the cores, the abraded material was analyzed with respect to sorbed actinides. The slices were scanned optically to visualize the flow path. Effective volumes and inner surface areas were measured. In the experiments, only breakthrough of Np(V) was observed. In each experiment, the recovery of Np(V) was less than or equal to40%. Breakthrough of Am(III) and Pu(IV) as well as of Np(IV) was not observed.

Place, publisher, year, edition, pages
2003. Vol. 61, no 04-jan, 219-233 p.
Keyword [en]
actinide, granite, in situ experiment
URN: urn:nbn:se:kth:diva-22313ISI: 000181510100018OAI: diva2:341011
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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