Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-26T23:49:47.832Z Has data issue: false hasContentIssue false
  • English
  • Français

Modeling the Evolution of a Soluble Matrix in Various Environments

Published online by Cambridge University Press:  10 February 2011

S. Maillard  and
D. Iracane
S. Maillard
Affiliation:
CEA SACLAY DESD/SESD, 91191 Gif sur Yvette, FRANCE, [email protected]
D. Iracane
Affiliation:
CEA SACLAY DESD/SESD, 91191 Gif sur Yvette, FRANCE, [email protected]
Get access

Abstract

We model the dissolution of a soluble matrix protected by a diffusion barrier. The dissolution, driven by a first order kinetics law, allows the solute to diffuse in the barrier with sorption and precipitation interactions. The dissolved mass evolution and the lifetime of the wasteform can be expressed in a closed form and as a function of relevant length scales, reflecting the phenomenon controlling the dissolution. Application to a nuclear glass in a clay barrier shows that diffusion in the barrier is the main phenomenon unless precipitation of chalcedony occurs or silicon is very strongly sorbed in the barrier. This requires further experimental investigation of silicon/clay interaction.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 506: Symposium – Scientific Basis for Nuclear Waste Management XXI , 1997 , 231
Copyright
Copyright © Materials Research Society 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1 Curti, E., Godon, N., Vernaz, E., Scientific Basis for Nuclear Waste Management XVI (1992).Google Scholar
2 Dove, P. M., Crerar, D.A., Kinetics of quartz dissolution in electrolytes solutions using a hydrothermal mixed flow reactor. Geochimica et cosmochimica acta Vol 54 (1990)Google Scholar
3 Grambow, B. in Scientific Basis for Nuclear Waste Management VIII (1984)Google Scholar
4 Lehikoinen, J., Carlsson, T., Muurinen, A., Olin, M., Salonen, P., Scientific Basis for Nuclear Waste Management XIX (1991)Google Scholar
5 Michard, G., Equilibres chimiques dans les eaux naturelles, pp 118, 352. Publisud ed.Google Scholar
6 Vernaz, E. Y., Godon, N., Scientific Basis for Nuclear Waste Management XV (1992)Google Scholar
7 Zavoshy, S. J., Chambré, P. L., Pigford, T. H., Scientific Basis for Nuclear Waste Management VIII (1984)Google Scholar