Corrosion of Glass-Bonded Sodalite as a Function of pH and Temperature


This paper reports the results of corrosion tests with glass-bonded sodalite, a ceramic waste form (CWF) that is being developed to immobilize radioactive electrorefiner salt used to condition spent sodium-bonded nuclear fuel, and with sodalite and binder glass, the two major components of the CWF. These tests were performed with dilute pH-buffered solutions in the pH range of 5-10 at temperatures of 70 and 90°C to determine the pH dependences of the forward dissolution rates of the CWF and its components. The tests show that the pH dependences of the dissolution rates of sodalite, binder glass, and glass-bonded sodalite are similar to the pH dependence of dissolution rate of borosilicate nuclear waste glasses, with a negative pH dependence in the acidic region and a positive pH dependence in the basic region. The dissolution rates are higher at 90°C than at 70°C. Our results on the forward dissolution rates and their temperature and pH dependences will be used as components of a waste form degradation model to predict the long-term behavior of the CWF in a nuclear waste repository.

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  1. 1.

    ANL-NT-119, Ceramic Waste Form Handbook, L. R. Morss, compiler, 1999.

    Google Scholar 

  2. 2.

    K. G. Knauss and T. J. Wolery, “Dependence of Albite Dissolution Kinetics of pH and Time at 25° and 70°C,” Geochim. Cosmochim. Acta 50,248 1–2497 (1986).

    Google Scholar 

  3. 3.

    K. G. Knauss and T. J. Wolery, “Muscovite Dissolution as a Function of pH and Time at 70°C,” Geochim. Cosmochim. Acta 53, 1493–1501 (1989).

    CAS  Article  Google Scholar 

  4. 4.

    K. G. Knauss, W. L. Bourcier, K. D. McKeegan, C. I. Merzbacher, S. N. Nguyen, F. J. Ryerson, D. K. Smith, H. C. Weed, “Dissolution Kinetics of a Simple Analogue Nuclear Waste Glass as a Function of pH, Time, and Temperature,” Mat. Res. Soc. Syrup. Proc., 176, 371–381 (1990).

    CAS  Google Scholar 

  5. 5.

    E. H. Oelkers, J. Schott, J. Devidal, “The Effect of Aluminum, pH, and Chemical Affinity on the Rates of Aluminosilicate Dissolution Reactions. Geochim. Cosmochim. Acta 58, 2011–2024 (1994).

    CAS  Article  Google Scholar 

  6. 6.

    P. K. Abraitis, D. J. Vaughan, F. R. Livens, J. Monteith, D. P. Trivedi, J. S. Small, “Dissolution of a Complex Borosilicate Glass at 60°C: The Influence of pH and Proton Absorption on the Congruence of Short-Term Leaching,” Mat. Res. Soc. Symp. Proc. 506, 47–54 (1998).

    CAS  Article  Google Scholar 

  7. 7.

    W. Bourcier, “Affinity Functions for Modeling Glass Dissolution Rates,” UCRL-JC- 131186 (1998).

    Google Scholar 

  8. 8.

    P. Aagaard and H. C. Helgeson, “Thermodynamic and Kinetic Constraints on Reaction Rates among Mineral and Aqueous Solutions, I. Theoretical Considerations,” Am. J. Science, 282, 237–285 (1982).

    CAS  Article  Google Scholar 

  9. 9.

    American Society for Testing and Materials, “Annual Book of ASTM Standards,” 12.01, Standard Test Method for Static Leaching of Monolithic Waste Forms for Disposal of Radioactive Waste, C1220-98, pp. 1-16 (1998).

  10. 10.

    B. P. McGrail, W. L. Ebert, A. J. Bakel, D. K. Peeler, “Measurement of Kinetic Rate Law Parameters on a Na-Ca-Al Borosilicate Glass for Low-Activity Waste,” J. Nucl. Materials 249, 1765–189 (1997).

    Article  Google Scholar 

  11. 11.

    H. S. Harned and B. B. Owen, The Physical Chemistry of Electrolytic Solutions, 3rd ed. (Reinhold, New York, 1958), pp. 643–649.

    Google Scholar 

  12. 12.

    K. Montgomery, “The Synthesis and Dissolution of Sodialite: Implications for Nuclear Waste Disposal,” M. Sc. Thesis, Dept. of Geology, University of Alberta, Canada (1986).

    Google Scholar 

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Morss, L.R., Stanley, M.L., Tatko, C.D. et al. Corrosion of Glass-Bonded Sodalite as a Function of pH and Temperature. MRS Online Proceedings Library 608, 733 (1999).

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