Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-29T08:01:51.492Z Has data issue: false hasContentIssue false
  • English
  • Français

Leaching and migration of Np, Pu, and Am from α-doped SON68 HLW glass in contact with dense clay

Published online by Cambridge University Press:  21 March 2011

Elie Valcke ,
Mireille Gysemans ,
Hugo Moors ,
Pierre Van Iseghem ,
Nicole Godon  and
Patrick Jollivet
Elie Valcke
Affiliation:
SCKCEN, Boeretang 200, 2400 Mol, Belgium
Mireille Gysemans
Affiliation:
SCKCEN, Boeretang 200, 2400 Mol, Belgium
Hugo Moors
Affiliation:
SCKCEN, Boeretang 200, 2400 Mol, Belgium
Pierre Van Iseghem
Affiliation:
SCKCEN, Boeretang 200, 2400 Mol, Belgium
Nicole Godon
Affiliation:
CEA Valrho, B.P. 17171, 30207 Bagnols-sur-Ceze, France
Patrick Jollivet
Affiliation:
CEA Valrho, B.P. 17171, 30207 Bagnols-sur-Ceze, France
Get access

Abstract

In the frame of an integrated in situ test on the alteration of the SON68 reference glass in realistic disposal conditions, the leaching of Np, Pu, and Am from α-doped SON68 glass samples and their migration in three clay-based backfill materials at high density was measured. The addition of powdered glass frit to a Ca-bentonite decreased the glass alteration by two orders of magnitude, and resulted in a concomitant decrease of the radionuclide leaching in comparison with dried Boom Clay, which is the more agressive backfill. All actinides were selectively retained in the alteration layer, but the retention degree was lower for Np than for Pu and Am. All backfill materials proved to be efficient barriers against radionuclide migration. For nearly all radionuclides and backfill materials, the migration profile showed a contribution of colloidal transport.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 932: Symposium – Scientific Basis for Nuclear Waste Management XXIX , 2006 , 9.1
Copyright
Copyright © Materials Research Society 2006

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] Valcke, E., Smets, S., Labat, S., Lemmens, K., Iseghem, P. Van, Thomas, P., Godon, N., Jollivet, P., Parisot, G., Mestre, J., Jockwer, N., Wieczorek, K., and Pozo, C., this volume (2006).Google Scholar
[2] Valcke, E., Iseghem, P. Van, Smets, S., Labat, S., Godon, N., Jockwer, N., Wieczoreck, K., EUR 19795, European Commission, Luxembourg (2001).Google Scholar
[3] Valcke, E., Smets, S., Labat, S., Iseghem, P. Van, Godon, N., Jollivet, P., Jockwer, N., and Wieczorek, K., p. 387–392 in EUR 21027, European Commission, Luxembourg (2004).Google Scholar
[4] Godon, N., Andriambololona, Z., and Vernaz, E., Mat. Res. Soc. Symp. Proc. Vol. 257, p. 135–141 (1992).Google Scholar
[5] Volckaert, G. et al. , EUR 16235, European Commission, Luxembourg (1995).Google Scholar
[6] Volckaert, G. et al. , EUR 19612 (2000), European Commission, Luxembourg (2000).Google Scholar
[7] Coleman, G. H., Radiochemistry of Plutonium, Univ. California, LLRL (1965).Google Scholar
[8] Pirlet, V., J. Nucl. Mat. 298, 47–54 (2001).Google Scholar
[9] Advocat, T., Jollivet, P., J.Crovisier, L., and Nero, M. Del, J. Nucl. Mat. 298, 1-2, p. 55–62 (2001).Google Scholar
[10] Jollivet, P. and Parisot, G., J. Nucl. Mat. 345, 46–64 (2005).Google Scholar
[11] Gin, S., workshop on Glass: Scientific research for high performance containment, August 31 – September 7, Méjannes-Le-Clap, CEA Valrhô, 514–526 (1997).Google Scholar
[12] Ribet, S. and Grambow, B., this volume (2006).Google Scholar
[13] Maes, N. et al. , EUR 21022, European Commission, Luxembourg (2004), and Final Scientific and Technical Report of the TRANCOM-II EC project, SCK-CEN Report BLG-988, Mol, Belgium (2004).Google Scholar