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Interactions Between Np-Doped Synroc and Boom Clay

Published online by Cambridge University Press:  15 February 2011

K. P. Hart ,
B. J. Robinson ,
T. E. Payne ,
P. Van Iseghem  and
K. Lemmens
K. P. Hart
Affiliation:
Australian Nuclear Science and Technology Organisation (ANSTO) Private Mail Bag 1, Menai, New South Wales, Australia, 2234.
B. J. Robinson
Affiliation:
Australian Nuclear Science and Technology Organisation (ANSTO) Private Mail Bag 1, Menai, New South Wales, Australia, 2234.
T. E. Payne
Affiliation:
Australian Nuclear Science and Technology Organisation (ANSTO) Private Mail Bag 1, Menai, New South Wales, Australia, 2234.
P. Van Iseghem
Affiliation:
S.C.K./C.E.N., Boeretang 200, B–2400 Mol, Belgium.
K. Lemmens
Affiliation:
S.C.K./C.E.N., Boeretang 200, B–2400 Mol, Belgium.
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Abstract

Leaching experiments with deionised water at 70°C have been carried out to ascertain the effect of oxidising and anaerobic conditions and the presence of Boom clay on Np release from Synroc.

The normalised solution leach rates of Np measured in these experiments are about a factor of 10 lower under reducing conditions than oxidising conditions and the presence of Boom clay was found not to enhance the leaching of Np from Synroc. Neptunium was found to be predominantly in the mobile fraction and was not removed from the leaching solutions significantly by filtration or ultrafiltration.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 841
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

1. Ringwood, A. E., Kesson, S., Reeve, K. D., Levins, D. M., Ramm, E. J. in Radioactive Waste Forms for the Future, edited by Lutze, W. and Ewing, R. C. (Elsevier Science Publishers, New York 1988) pp. 233–334.Google Scholar
2. Levins, D. M., Seatonberry, B. W., Hart, K. P., Vance, L. and Guthrie, V., in Performance of High Level Waste Forms and Engineered Barriers under Repository Conditions, edited by the IAEA, IAEA-TECDOC-582, (1991).Google Scholar
3. Hart, K. P., Glassley, W. E. and McGlinn, P. J., Radiochimica Acta, 58/59, 33 (1992).Google Scholar
4. Van Iseghem, P., Berghman, K., Lemmens, K., Timmermans, W., Wang, L., Laboratory and In-situ Interaction between Simulated Waste Glasses and Clay. Final Report 1986–1990 -update 1993 for the European Atomic Energy Community Study on Management and Storage of Radioactive Waste.Google Scholar
5. Bruno, J. and Sellin, P., Radionuclide Solubilities to be used in SKB 91. SKB Technical Report 92–13 (1992).Google Scholar
6. Brookins, D. G.. Eh/pH Diagrams for Geochemistry (Springer Verlag, Berlin, 1988).Google Scholar
7. Hart, K. P., Payne, T. E., Robinson, B. J., Radiochimica Acta, in press.Google Scholar
8. Vernaz, E. Y. and Godon, N., in Scientific Basis for Nuclear Waste Management XV, edited by Sombret, C. (Elsevier Science Publishers, New York, 1992), pp 37–48.Google Scholar