Hostname: page-component-7b7567c8c-fvjsw Total loading time: 0 Render date: 2026-11-14T21:12:08.538Z Has data issue: false hasContentIssue false
  • English
  • Français

Modeling Surface Area to Volume Effects on Borosilicate Glass Dissolution

Published online by Cambridge University Press:  01 January 1992

William L. Bourcier,
W. L. Ebert and
X. Feng
William L. Bourcier
Affiliation:
Lawrence Livermore National Laboratory, L-219, Livermore CA 94550
W. L. Ebert
Affiliation:
Argonne National Laboratory, 9700 South Cass Avenue, Argonne IL 60559
X. Feng
Affiliation:
Argonne National Laboratory, 9700 South Cass Avenue, Argonne IL 60559
Get access

Abstract

We simulated the reaction of SRL-131 glass with equilibrated J-13 water in order to investigate the effects of surface area to volume ratio (SAN/) on glass dissolution. We show that glass-fluid ion exchange causes solution pH to rise to progressively higher values as SA/V increases. Because the ion exchange is rapid relative to the duration of the glass dissolution experiment, the pH effect does not scale with (SA/V)*time. Experiments compared at the same (SA/V)*time value therefore have different pHs, with higher pHs at higher SA/V ratios. Both experimental data and our simulation results show similar trends of increasing reaction rate as a function of SAN ratio when scaled to (SA/V)*time. Glasses which react in systems of differing SA/V ratio therefore follow different reaction paths and high SAN ratios cannot be used to generate data which accurately scales to long time periods unless the ion exchange effect is taken into account. We suggest some simple test designs which enable more reliable high SAN accelerated tests.

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.)

Article purchase

Temporarily unavailable

References

REFERENCES

1. Ethridge, E.C, Clark, D.E. and Hench, L.L., Phys. Chem. Glasses 20 35 (1979).Google Scholar
2. Mendel, J.E., ed. Final Report of the Defense High Level Waste Leaching Mechanisms Program, Chapter 1 (1984).Google Scholar
3. Oversby, V. M., Lawrence Livermore National Laboratory UCRL-87621 (1982).Google Scholar
4. Pederson, L.R., Buckwalter, C.Q., McVay, G.L. and Riddle, B.L., in Scientific Basis for Nuclear Waste Management 15, edited by Brookins, D.G., 47 (1983).Google Scholar
5. Chandler, G.T., Wicks, G.G. and Wallace, R.M., Advances in Ceramics. Nuclear waste Management II. 455 (1986).Google Scholar
6. Van Iseghem, R. and Grambowjn, B. Scientific Basis for Nuclear Waste Management 112, edited by Apted, M.J. and Westerman, R.E., 631 (1988).Google Scholar
7. Feng, X., Pegg, I.L., Guo, Y., Barkatt, A.A. and Macedo, P.B., in Scientific Basis for Nuclear Waste Management 176, edited by Oversby, V.M. and Brown, P.W., 383 (1990).Google Scholar
8. Vernaz, E., Advocat, T., and Dussossoy, J.L., Advances in Ceramics. Nuclear waste Management II. 175 (1990).Google Scholar
9. Machiels, A.J. and Pescatore, C., in Scientific Basis for Nuclear Waste Management 15, edited by Brookins, D.G., 209 (1983).Google Scholar
10. Strachan, D.M., Engel, D.W., McGrail, B.P., Eslinger, P.W. and Apted, M.J., Pacific Northwest Laboratory Report PNL-7591.Google Scholar
11. Shade, J.W. and Strachan, D.M., Am. Ceram. Sci. Bull. 12, 1568 (1986).Google Scholar
12. Bethke, C.M., The Geochemist's Workbench: A users guide to Rxn, Act2, Tact, React, and Gtplot. U. of Illinois Press, 174 p.Google Scholar
13. Bates, J.K., Ebert, W.L., Feng, X. and Bourcier, W.L., J. Nuc. Materials, 190, 198 (1992).Google Scholar
14. Grambow, B., Nuclear waste glass dissolution: mechanism, model and application, JSS Project Report 87-02Google Scholar
15. Abrajano, T.A. and Bates, J.K., in Scientific Basis for Nuclear Waste Management 10, edited by Bates, J. K. and Seefeldt, W.B., 533 (1987).Google Scholar
16. Bates, J.K., Ebert, W.L., Fischer, D.F. and Gerding, T.J., J. Mater. Res. 3, 576 (1988).Google Scholar
17. Bourcier, W.L., Peiffer, D.W., Knauss, K.G., McKeegan, K.D. and Smith, D.K., in Scientific Basis for Nuclear Waste Management 13, edited by Oversby, V.M. and Brown, T.W., 209 (1990).Google Scholar
18. Knauss, K.G., Bourcier, W.L., McKeegan, K.D., Merzbacher, C.I., Nguyen, S.N., Ryerson, F.J., Smith, D.K., Weed, H. C., and Newton, L., in Scientific Basis for Nuclear Waste Management 13, edited by Oversby, V.M. and Brown, P.W., 371 (1990).Google Scholar
19. Ebert, W.L. and Bates, J.K., The effects of the leachate pH and glass surface area/ leachant volume on glass reaction, sub. to Phys. Chem. Glasses (1992).Google Scholar
20. Bourcier, W.L., Lawrence Livermore National Laboratory UCID-21869 (1990).Google Scholar