Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-27T01:41:24.777Z Has data issue: false hasContentIssue false
  • English
  • Français

Leaching of Actinides from Nuclear Waste Glass: French Experience

Published online by Cambridge University Press:  25 February 2011

E.Y. Vernaz  and
N. Godon
E.Y. Vernaz
Affiliation:
Rhône Valley Nuclear Research Center, DPR/SCD, BP 171, F 30205 Bagnols-sur-Cèze, France
N. Godon
Affiliation:
Rhône Valley Nuclear Research Center, DPR/SCD, BP 171, F 30205 Bagnols-sur-Cèze, France
Get access

Abstract

Results are presented for a large number of aqueous leach tests on glass specimens doped with 237Np, 238Pu, 239pu, 241Am or 244Cm. The effects of the leaching mode (static or dynamic), temperature and environmental materials are discussed. The amount of actinides contained in the alteration film is characterized by the retention factor RF = NL(B)/NL(act). The neptunium retention factor ranged from 1 to 10 depending on the test conditions; for plutonium and americium, the retention factor varied from 6 to 1300.

In general, the retention factor increased with the temperature. The very important influence of the environmental materials shows that there is competition for actinide retention between the alteration film and the surrounding materials, but in every case the amount of ca activity released into solution is very low.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 257: Symposium – Scientific Basis for Nuclear Waste Management XV , 1991 , 37
Copyright
Copyright © Materials Research Society 1992

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. Matzke, Hj., “Actinide Diffusion in Waste Glasses” in Thermodynamics of Nuclear Materials, vol 1, pp 311–329, IAEA Vienna (1980).Google Scholar
2. Vernaz, E. and Dussossoy, J.L., “Current State of Knowledge of Nuclear Waste Glass Corrosion Mechanisms: the Case of R7T7 Glass” accepted for publication in Applied Geochemistry (Special Issue: 1991).Google Scholar
3. Vernaz, E., Fillet, S., Jacquet-Francillon, N., “Les actinides dans les verres” Journal of Less Common Metals, 121 (1986 London and Bonn), 637–644.Google Scholar
4. Vernaz, E., Jacquet-Francillon, N. and Bonniaud, R., “Effets des désintégrations alpha dans les verres” Echos CEA, Special Issue (1982), 38–43.Google Scholar
5. Fillet, S., Noguès, J.L., Vernaz, E. and Jacquet-Francillon, N., “Leaching of Actinides from the French LWR Reference Glass” Scientific Basis for Nuclear Waste Management IX, Mat. Res. Soc. Symp. Proc., 50, 211–218 (1985).Google Scholar
6. Advocat, T., Crovisier, J.L., Vernaz, E., Ehret, G. and Charpentier, H., “Hydrolysis of R717 Nuclear Waste Glass in Dilute Media: Mechanisms and Rate as a Function of pH” Scientific Basis for Nuclear Waste Management XIV, Mat. Res. Soc. Symp. Proc., 212 (1991).Google Scholar
7. Godon, N., Vernaz, E., Thomassin, J.H. and Touray, J.C., “Effect of Environmental Materials on Aqueous Corrosion of R717 Glass” Scientific Basis for Nuclear Waste Management XII, Mat. Res. Soc. Symp. Proc., 127, 97–104 (1989).Google Scholar
8. Vernaz, E. and Godon, N., “Key Parameters of Glass Dissolution in Integrated Systems” Scientific Basis for Nuclear Waste Management XIV, Mat. Res. Soc. Symp. Proc. 212, 19–30 (1991).Google Scholar
9. Noguès, J.L., Vernaz, E., Jacquet-Francillon, N. and Pasquini, S., “Interaction between a Nuclear Glass and Nearfield Materials in Various Rigs Simulating a Geological Disposal” Proceedings of the International Seminar on Radioactive Waste Products, Jüllich, Germany, June 10-13,1985.Google Scholar
10. Godon, N. and Vernaz, E., “R7T7 Nuclear Waste Glass Behavior in Moist Clay : Role of the Clay Mass/Glass Surface Area Ratio” Scientific Basis for Nuclear Waste Management XIII, Mat. Res. Soc. Symp. Proc., 176,319–326 (1990).Google Scholar
11. Dussossoy, J.L., Chouchan, J.L., Bouchon, M. and Vernaz, E., Leaching Sensitivity to Geologic Environmental Parameters, CCE contract No FI 1W 0027, Final Report, EUR 13603 EN.Google Scholar
12. Puigdomenech, I. and Bruno, J., Plutonium solubilities, SKB Technical Report No 91-04.Google Scholar