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Sorption Aspects for in Situ Matrix Diffusion Modelling at Palmottu Natural Analogue Site, Sw Finland

Published online by Cambridge University Press:  15 February 2011

Kari Rasilainen
Affiliation:
VTT Energy, P.O. Box 1604, FIN-02044 VTT,
Juhani Suksi
Affiliation:
University of Helsinki, Department of Radiochemistry, P.O. Box 5, FIN-00014 UNIVERSITY OF HELSINKI,
Martti Hakanen
Affiliation:
University of Helsinki, Department of Radiochemistry, P.O. Box 5, FIN-00014 UNIVERSITY OF HELSINKI,
Markus Olin
Affiliation:
VTT Chemical Technology, P.O. Box 1404, FIN-02044 VTT
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Abstract

Concentration profiles in rock matrix around water-carrying fissures were measured at Palmottu U deposit. The profiles were interpreted by the classical matrix diffusion concept. Site-specific sorption studies were performed for U using standard batch experiments and surface complexation modelling; the response of sorption isotherms was also tested. Sitespecific matrix properties as well as initial and boundary conditions were used in simulations. Our results indicate that matrix diffusion alone cannot explain the observed enrichment of U and its daughters in the rock matrix.

Type
Research Article
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

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