Skip to main content Accessibility help
×
Home

Enhancement of Zirconolite Dissolution Due to Water Radiolysis

  • Nelly Toulhoat (a1), Nelly Toulhoat (a2), Nathalie Moncoffre (a3), Pierre Toulhoat (a4), Christophe Jegou (a5), Catherine Corbel (a6), Isabelle Bardez (a7) and Gilles Leturcq (a8)...

Abstract

Zirconolite is a candidate host material for conditioning minor tri- and tetra-valent actinides arising from enhanced nuclear spent fuel reprocessing and partitioning, in the case of disposal of the nuclear waste. Its chemical durability has been studied here under charged particle-induced radiolysis (He2+ and proton external beams) to identify the possible effects of water radiolysis on the dissolution rates in pure water and to describe the alteration mechanisms. Two experimental geometries have been used in order to evaluate the influence of the following parameters: solid irradiation, water radiolysis. In the first geometry the beam gets through the sample before stopping at the surface/water interface. In the second one the beam stops before the surface/water interface. Results on the elemental releases due to the enhanced dissolution of the zirconolite surface during charged particle-induced irradiation of water are presented. Under radiolysis, an increase of one order of magnitude is observed in the Ti, Zr and Nd elemental releases. No difference in the total elemental releases can be noticed when the solid is also irradiated.

Copyright

References

Hide All
1. Fillet, C., Marillet, J., Dussossoy, J. L., Pacaud, F., Jacquet Francillon, N., Phalippou, J., Ceramic Trans. 87, 531 (1998).
2. Advocat, T., Fillet, C., Marillet, J., Leturcq, G., Boubals, J. M., Bonnetier, A., Mater. Res. Soc. Symp. Proc. 506, 55 (1998).
3. Leturcq, G., Advocat, T., Hart, K., Berger, G., Lacombe, J., Bonnetier, A., Am. Mineral. 86, 871 (2001).
4. Guy, C., Audubert, F., Lartigue, J. E., Latrille, C., Advocat, T., Fillet, C., C. R. Physique 3, 827 (2002).
5. Leturcq, G., McGlinn, P. J., Barbe, C., Blackford, M. G., Finnie, K. S., Applied Geochemistry 20, 899 (2005).
6. Fillet, C., Advocat, T., Bart, F., Leturcq, G., Rabiller, H., C. R. Chimie 7, 1165 (2004).
7. Ferradini, C., Jay-Gerin, J. P., Can. J. Chem. 77, 1542 (1999).
8. Tribet, M., Gavarini, S., Toulhoat, N., Moncoffre, N., Chevarier, A., Jègou, C., Leturcq, G., Corbel, C., Toulhoat, P., Radiochim. Acta 94, 585 (2006).
9. Knauss, K. G., Dibley, M. J., Bourcier, W. L., Shaw, H. F., Applied Geochemistry 16, 1115 (2001).
10. Brown, P. L., Curti, E. and Grambow, B., “Chemical Thermodynamics of zirconium”, chemical thermodynamics, ed. by OECD (Elsevier, 2005), pp.100110 and 403–427.
11. Munakata, H., Oumi, Y., Miyamoto, A., J. Phys. Chem. B 105, 3493 (2001).
12. Fois, E., Gamba, A., Spano, E., J. Phys. Chem. B 108, 9558 (2004).

Keywords

Enhancement of Zirconolite Dissolution Due to Water Radiolysis

  • Nelly Toulhoat (a1), Nelly Toulhoat (a2), Nathalie Moncoffre (a3), Pierre Toulhoat (a4), Christophe Jegou (a5), Catherine Corbel (a6), Isabelle Bardez (a7) and Gilles Leturcq (a8)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed