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Long-Term Release from High Level Waste Glass - Part IV: The Effect of Leaching Mechanism

  • Eberhard Freude (a1), Bernd Grambow (a1), Werner Lutze (a1), Harald Rabe (a1) and Rodney C. Ewing (a2)...


During the past ten years extensive data have been determined for the corrosion of nuclear waste forms in short-term laboratory experiments (usually less than one year). The long-term behavior of glass has been inferred by: (1) the acceleration of corrosion rates at high temperatures [1]; (2) the use of high surface areas of the glass to small volumes of solution [1]; and the analysis of natural glasses altered over long periods of geologic time [2, 3]. The most recent efforts have concentrated on understanding the mechanisms of corrosion [1, 4, 5]. The corrosion mechanism may be used to make long-term extrapolations of the “stability” of the waste form. In this paper, we consider a linear time dependence for the corrosion under near saturation conditions and use a rate equation in the QTERM code [6, 7, 8] to model the long-term behavior of the German glass, C-31−3EC [9], JSS A [10, 11] and SRL TDS 131 [1]. The data base for C-31−3EC has been published elsewhere [9, 12, 13, 14], and we include experimental work completed by Rabe for boron and silica, at 200°C.



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[1] Mendel, J.E., Compiler, Report PNL 5157 (1984).
[2] Malow, G., Lutze, W., and Ewing, R.C., J. Noncryst. Solids 67, 305 (1984).
[3] Byers, C.D., Jercinovic, M.J., Ewing, R.C., and Keil, K., this volume.
[4] Grambow, B., this volume.
[5] Haaker, R.F., Malow, G., and Offermann, P., this volume.
[6] Altenhein, F.K., Lutze, W., and Ewing, R.C., Scientific Basis for Nuclear Waste Management V, Lutze, W. ed., pp. 4556 (North Holland, New York, 1982).
[7] Altenhein, F.K., Lutze, W., and Ewing, R.C., Scientific Basis for Nuclear Waste Management VI, Brookins, D.G. ed., pp. 269280 (North Holland, New York, 1983).
[8] Altenhein, F.K., Lutze, W., and Ewing, R.C., Advances in Ceramics, Vol. 8, Nuclear Waste Management, Wicks, G.G. and Ross, W.A. ed., pp. 636646 (Amer. Ceramic Soc., Columbus, Ohio, 1984).
[9] Engelmann, Ch., ed., Report EUR 91268EN (1984).
[10] Hermansson, H.P. et al., Scientific Basis for Nuclear Waste Management VII, McVay, G.L. ed., pp. 671679 (North Holland, New York, 1984).
[11] Hermansson, H.P. et al., JSS Report, STUDSVIK/NW - 84/653 (1984).
[12] Malow, G., in ref. 6, pp. 25–36.
[13] Lutze, W., Malow, G., Rabe, H., and Headley, T., in ref. 7, pp. 37–45.
[14] Grambow, B., XIII Intern. Congress on Glass, Hamburg 1983, Glastechnische Berichte Sonderband.
[15] Rimstidt, J.D., and Barnes, H.L., Geochim. Cosm. Acta, 44, 16831699 (1980).
[16] Grambow, B., Ein physikalisch - chemisches Modell für den Mechanismus des Glaskorrosion - unter besonderer Berücksichtigung simulierter radioaktiver Abfallgläser. Dissertation, Freie Universitat Berlin 1984.
[17] Nuclear Waste Materials Handbook, DOE/T1C 11400, 1981.
[18] Private communication from Werme, L., SKB Stockholm, Sweden (1984).
[19] Friedman, I., Smith, R.L., and Long, D., Geol. Soc. Amer. Bull. 77, 323 (1966).
[20] Bates, J.F., and Steindler, M.J., in ref. 7, pp. 83–90.
[21] Wicks, G.G., and Wallace, R.M., in ref. 7, pp. 23–28.
[22] Laude, F., Vernaz, E., and Saint-Gaudens, M., in ref. 7, pp. 239–248


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