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Growth Rate of Alteration Layer and Elemental Mass Losses During Leaching of Borosilicate Nuclear Waste Glass

Published online by Cambridge University Press:  21 February 2011

T. Banba ,
T. Murakami  and
H. Isobe
T. Banba
Affiliation:
Japan Atomic Energy Research Institute, Tokai, Ibaraki 319–11, JAPAN
T. Murakami
Affiliation:
Japan Atomic Energy Research Institute, Tokai, Ibaraki 319–11, JAPAN
H. Isobe
Affiliation:
Japan Atomic Energy Research Institute, Tokai, Ibaraki 319–11, JAPAN
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Abstract

MCC-1 static leaching experiments were carried out for a simulated waste glass in deionized water for up to 364 days at 90°C in order to examine the relationship between alteration layer thickness and elemental mass losses. The thickness of the layer increased linearly at a rate of 0.63,μm/day for the first 91 days, and thereafter it remained constant (about 60 μm) independent of time. The change in normalized elemental mass losses of B, Na, and Si with time shows the same trend as that of the change in the layer thickness. It is also demonstrated that the growth rate of the layer can be calculated from the released boron in the leachates. The shrinkage of the alteration layer during air-drying is not significant in spite of the porous structure of the layer, which results from the depletion of cations and the recrystallization reported previously. Although the apparent release of elements almost ceases after a 91-day leaching experiment, reactions in the layer such as crystal growth continue.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 176: Symposium U – Scientific Basis for Nuclear Waste Management XIII , 1989 , 363
Copyright
Copyright © Materials Research Society 1990

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References

REFERENCES

1. Ewing, R.C. and Jercinovic, M.J., in Scientific Basis for Nuclear Waste Management X, edited by Bates, J.K. and Seefeldt, W.B. (Materials Research Society, Pittsburgh, 1987), p.67.Google Scholar
2. Ewing, R.C., in Scientific Basis for Nuclear Waste Management I, edited by McCarthy, G.J. (Plenum, New York, 1979), p.57.Google Scholar
3. Crovisier, J.L., Thomassin, J.H., Juteau, T., Eberhart, J.P., Touray, J.C. and Bailif, P., Geochim. Cosmochim. Acta 47, 377 (1983).Google Scholar
4. Crovisier, J.L., Fritz, B., Grambow, B. and Eberhart, J.P., in Sc iLentLifiLc Basis for Nuclear Waste Management TX, edited by Werme, L.O. (Materials Research Society, Pittsburgh, 1986), p.273.Google Scholar
5. Crovisier, J.L., Honnorez, J. and Eberhart, J.P., Geochim. Cosmochim. Acta 51, 2977 (1987).Google Scholar
6. Murakami, T., Ewing, R.C. and Bunker, B.C., in Scientific Basis for Nuclear Waste Management XI, edited by Apted, M.J. and Westerman, R.E. (Materials Research Society, Pittsburgh, 1988), p.737.Google Scholar
7. Murakami, T., Banba, T., Jercinovic, M.J. and Ewing, R.C., in Scientific Basis, for Nuclear Waste Management XII, edited by Lutze, W. and Ewing, R.C. (Materials Research Society, Pittsburgh, 1989), p.65.Google Scholar
8. Crovisier, J.L., Atassi, H., Daux, V., Honnorez, J., Petit, J.C. and Eberhart, J.P., ibid., p.41.Google Scholar
9. Crovisier, J.L., Advocat, T., Petit, J.C. and Fritz, B., ibid, p.57.Google Scholar
10. Abrajano, T.A. Jr, Bates, J.K. and Bradley, J.P., to appear in Proceedings of Fourth International Symposium on Ceramics in Nuclear Waste Management 1989 (American Ceramics Society, Columbus).Google Scholar
11. Jercinovic, M.J. and Ewing, R.C., JSS Project Technical Report 88-01, SKB, Stockholm 1988, 221 p.Google Scholar
12.Materials Characterization Center, Nuclear Waste Materials Handbook, DOE/TIC-11400 (1981).Google Scholar
13. Grambow, B., Jercinovic, M.J., Ewing, R.C. and Byers, C.D., in Scientific Basis for Nuclear Waste Management IX, edited by Werme, L.O. (Materials Research Society, Pittsburgh, 1986), p.263.Google Scholar
14. Grambow, B., in Scientific Basis for Nuclear Waste Management VIII, edited by Jantzen, C.M., Stone, J.A. and Ewing, R.C. (Materials Research Society, Pittsburgh, 1985), p.15.Google Scholar
15. Zhou, Zhihong and Fyfe, W.S., in Scientific Basis for Nuclear Waste Manaqement XI, edited by Apted, M.J. and Westerman, R.E. (Materials Research Society, Pittsburgh, 1988), p.725.Google Scholar
16. Harker, A.B. and Flintoff, J.F., Nucl. Technol., 76, 263 (1987).Google Scholar
17. Melson, W.G. and Thompson, G., Geol. Soc. America Bull., 84, 703 (1973).Google Scholar