Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-28T13:17:18.799Z Has data issue: false hasContentIssue false
  • English
  • Français

A Comparison of Wasteforms and Processes for the Immobilisation of Iodine-129

Published online by Cambridge University Press:  01 February 2011

E. R. Maddrell  and
P. K. Abraitis
E. R. Maddrell
Affiliation:
British Nuclear Fuels plc, Sellafield, Seascale, Cumbria, United Kingdom, CA20 1PG
P. K. Abraitis
Affiliation:
British Nuclear Fuels plc, Sellafield, Seascale, Cumbria, United Kingdom, CA20 1PG
Get access

Abstract

A range of potential wasteforms for the immobilisation of iodine-129 have been synthesised and compared. The work used both iodosodalite and iodovanadinite, as identified in previous studies, as baseline iodine host phases. Syntheses of related compounds using alternative precursors had varying degrees of success. In addition it was shown that iodine could potentially be isolated in a simple composite wasteform of silver iodide particles in a rutile or anatase matrix. Preliminary leaching studies suggest that iodosodalite dissolves congruently whilst iodovanadinite shows preferential release of iodine at a rate approximately ten times that of matrix alteration.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 807: Symposium Scientific Basis for Nuclear Waste Management XXVII , 2003 , 261
Copyright
Copyright © Materials Research Society 2004

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. Audubert, F., Carpena, J., Lacout, J.L. and Tetard, F., Elaboration of an iodine-bearing apatite; Iodine diffusion into a Pb3(VO4)2 matrix, Solid State Ionics 95 pp. 113–119 (1997)Google Scholar
2. Babad, H. and Strachan, D.M., Method for Immobilizing Radioactive Iodine, US Patent 4,229,317 (1980)Google Scholar
3. Nakazawa, T., Kato, H., Okada, K., Ueta, S. and Mihara, M., Iodine Immobilization by Sodalite Waste Form, in “Scientific Basis for Nuclear Waste Management XXIV” MRS Symposium Proceedings 663 pp. 51–57 (2001)Google Scholar
4. Stein, A., Ozin, G.A., Macdonald, P.M., Stucky, G.D. and Jelinek, R., Class A Sodalites: Silver, Sodium Halosodalites , J. Am. Chem. Soc. 4 p. 5171 (1992)Google Scholar
5. Stein, A., NaBr-Sodalite, , in “Verified Syntheses of Zeolitic Materials”, Ed. Robson, H., International Zeolite Association Association, Synthesis Commission, Microporous and Mesoporous Materials, 22 p. 656–659 (1998)Google Scholar
6. Adelhelm, C., Bauer, C., Gahlert, S. and Ondracek, G., TiO2 - A Ceramic Matrix, in “Radioactive Waste Forms for the Future”, eds Lutze, W. and Ewing, R.C., Publ. North-Holland (1988)Google Scholar
7. Sudarsanan, K., Young, R.A. and Wilson, A.J.C., The Structures of some Cadmium ‘Apatites’ Cd5(MO4)3X. I Determination of the Structures of Cd5(VO4)3I, Cd5(P04)3Br, Cd5(AsO4)3Br and Cd5(VO4)3Br, Acta. Cryst. B, 33 p. 3136 (1977)Google Scholar
8. Audubert, F. and Lartigue, J.-E., Iodine Immobilization in Apatites, Conférence Internationale ATALANTE 2000, Paper P4.13 Google Scholar
9. Guy, C., Audubert, F., Lartigue, J.-E., Latrille, C., Advocat, T. and Fillet, C., New Conditionings for Separated Long-Lived Radionuclides, Compte Rendu Physique 3 pp. 827–37 (2002)Google Scholar