Skip to main content Accessibility help
×
×
Home

Chemistry of Glass Corrosion in High Saline Brines

  • B. Grambow (a1) and R. Müller (a1)

Abstract

Experimental data were obtained for conventional pH values corrected for liquid junction, amorphous silica solubility and glass corrosion in concentrated salt brines. The data were interpreted with a geochemical model. The brine chemistry was described with the Pitzer formalism [1] using a data base which allows calculation of brine compositions in equilibrium with salt minerals at temperatures up to 200°C.

In MgCl2 dominated brines Mg silicates form and due to the consumption of Mg the pH decreases with proceeding reaction. A constant pH (about 4) and composition of alteration products is achieved, when the alkali release from the glass balances the Mg consumption. The low pH results in high release of rare earth elements REE and U from the glass. In the NaCl dominated brine MgCl2 becomes exhausted by Mg silicate formation. As long as there is still Mg left in solution the pH decreases. After exhaustion of Mg the pH rises with the alkali release from the glass and analcime is formed.

Copyright

References

Hide All
[1] Pitzer, K.S., J.Phys.Chem. 77, 268277 (1973)
[2] “JSS-Project Phase IV: Final Report - Experimental and Modeling Studies of HLW-Glass Dissolution in Repository Environments”, JSS-Report 87-01, SKB, Stockholm (1987)
[3] Grambow, B., “Nuclear Waste Glass Dissolution: Mechanism, Model and Application”, JSS-Project Report 87–02, (1987)
[4] Lutze, W., Müller, R. and Montserrat, W., Mat. Res. Soc. Symp. Proc. Vol. 112, Materials Research Society, Pittsburgh PA (1988)
[5] Lutze, W., Müller, R. and Montserrat, W., Mat. Res. Soc. Symp. Proc. Vol. 127, Materials Research Society, Pittsburgh PA, pp. 8189 (1989)
[6] Harvie, C.E., Müller, N., and Weare, J., Geochim. Cos-mochim. Acta 48, 12031618 (1984)
[7] Harvie, C.E. and Weare, J., Geochim. Cosmochim. Acta 44, 981997 (1980)
[8] Gueddari, M., Monnin, C., Perret, D., Fritz, B., Tardy, Y., Chem. Geol. 39, 165178 (1983)
[9] Marshall, W.L., Geochim.Cosmochim. Acta 44, 907913 (1980)
[10] Wolery, T.J., “EQ3NR, A Computer Program for Geochemical Aqueous Speciation-Solubility Calculations”, Lawrence Li-vermore Natl. Lab., UCRL-53414, Livermore CA. USA (1983)
[11] Wolery, T.J., “EQ3/6 Modifications for Geochemical Modeling of Brines”, Lawrence Livermore National Laboratory Report, Livermore, CA. USA (1983)
[12] Pabalan, R.T. and Pitzer, K.S., Geochim. Cosmochim. Acta 51, 24292443 (1987)
[13] Møller, N., Geochim. Cosmochim. Acta 52, 821837 (1988)
[14] Greenberg, J.P. und Møller, N., Geochim. Cosmochim. Acta 52, 25032518 (1989)
[15] Marshall, W.L. and Chent, C.A., Geochim. Cosmochim. Acta 46, 289291 (1982)
[16] Chen, C.A. and Marshall, W.L., Geochim. Cosmochim. Acta 46, 279287 (1982)
[17] Pitzer, K.S., CRC Press. Inc. Boca Raton, Fl., USA (1979)
[18] Reardon, E. J., J. Phys. Chem. 92. (1988) pp. 64266431
[19] Gmelins Handbuch der Anorganischen Chemie, Kalium, An-hangband, Ergänzungsband, (1970)
[20] D'Ans, J., “Die L6sungsgleichgewichte der Systeme der Salze ozeanischer SalzablagerungenVerlagsgesellschaft für Ackerbau, Berlin (1933)
[21] Knauss, K.G., Wolery, T. and Jackson, K.J., ‘A New Approach to Measure pH in Concentration ElectrolytesGSA meeting, 1989
[22] Grambow, B., Müller, R., Rother, A. and Lutze, W., “Radionuclide Release in Low pH High Saline Brines Resulting From Glass Corrosionto be published in Radiochimica Acta
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed