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The Long-Term Dissolution Behaviour of the Pamela Borosilicate Glass SM527 - Application of SA/V as Accelerating Parameter

  • K. Lemmens (a1) and P. Van Iseghem (a1)

Abstract

The Al2O3 rich borosilicate glass SM527 was submitted to corrosion tests with glass surface area to solution volume ratios ranging from 10 to 10000 m-1. This latter condition would correspond with a 1000 fold acceleration relative to the reference MCCI condition. Powdered glass was used to reach SANV ratios of 500 m-1 and more. The leaching solutions were either distilled water or referred to Boom clay disposal conditions. The results based on the boron concentration in solution revealed a relatively linear dependence on SA/V.t0.5 in the pure solutions, on the longer term (DW and clay water). Diffusion is suggested to be the process governing the glass dissolution, although other processes should not be excluded. In a clay / clay water mixture (slurry), long term dissolution seems to be limited by saturation. Short term data for boron are largest in the clay slurry, but with time the boron concentrations converge to similar values in the three media considered. The use of SA/V as an accelerating factor is promising, but certainly requires additional research.

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[1] Iseghem, P. Van, Timmermans, W. and Batist, R. De in Scientific Basis for Nuclear Waste Management VIII, edited by Jantzen, C.M., Stone, J.A. and Ewing, R.C. (Mater. Res. Soc. Proc. 44, Pittsburgh, PA 1985) pp. 5562.
[2] Patyn, J., Iseghem, P. Van and Timmermans, W. in Scientific Basis for Nuclear Waste Management XIII, edited by Oversby, V.M. and Brown, P.W. (Mater. Res. Soc. Proc. 176, Pittsburgh, PA 1990) pp. 299307; X. Feng, I.L. Pegg, Y. Guo, Aa. Barkatt and P.B. Macedo, ibid., pp. 383-392.
[3] Ethridge, E.C., Clark, D.E. and Hench, L.L., Physics and Chemistry of Glasses, 20 (2), 3540 (1979).
[4] Buckwalter, C.Q., Pederson, L.R. and McVay, G.L., Journal of Non-Crystalline Solids 49, 397412 (1982).
[5] Pederson, L.R., Buckwalter, C.Q. and McVay, G.L., Nuclear Technology 62, 151158 (1983).
[6] Chandler, G.T., Wicks, G.G. and Wallace, R.M. in Advances in Ceramics 20, Nuclear Waste Management II, edited by Clark, D.E., White, W.B. and Machiels, A.J. (American Ceramic Society, 1986), pp. 455463.
[7] Pederson, L.R., Buckwalter, C.Q., McVay, G.L. and Riddle, B.L. in Scientific Basis for Nuclear Waste Management VI, edited by Brookins, D.G. (Elsevier Science Publishers, 1983), pp. 4754; A.J. Machiels and C. Pescatore, ibid., pp. 209-216.
[8] Vernaz, E. and Dussossoy, J.L. in Basic Mechanisms of Aqueous Corrosion of Nuclear Waste Glasses, EUR 13605 EN (Commission of the European Communities, Luxemburg, 1991) pp. 79.
[9] Roggendorf, H., Sebastian, K., Conradt, R. and Ostertag, R. in Investigation of the Long-Term Behaviour of HLW Glass under Conditions Relevant to Final Storage, Final report to the CEC for contract No. FIIW-0028-D(B), to be published.
[10] Final Report of the Defense High-Level Waste Leaching Mechanisms Program, PNL-5157, Compiler J.E.Mendel (PNL, Richland, Washington, 1984) pp. 1.111.12.
[11] Cousens, D.R., Lewis, R.A., Myhra, S., Segall, R.L., Smart, R.St.C. and Turner, P.S., Radioactive Waste Management 2 (2), 143168 (1981).
[12] DOE/TIC 11400, Nuclear Waste Materials Handbook, Test Methods (PNL, Richland, Washington, 1981).
[13] Iseghem, P. Van, Berghman, K., Lemmens, K., Timmermans, W. and Lian, W. in Laboratory and In-Situ Interaction between Simulated Waste Glasses and Clay, Final report to the CEC for contracts No. FIIW/0100 and FIlW/0179, to be published.
[14] EC Test procedure for the repository system simulation test, edited HMI Berlin, 1987.
[15] Iseghem, P. Van and Grambow, B. in Scientific Basis for Nuclear Waste Management XI, edited by Apted, M.J. and Westerman, R.E. (Mater. Res. Soc. Proc. 112, Pittsburgh, PA 1987) pp. 631639.

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