Hostname: page-component-848d4c4894-jbqgn Total loading time: 0 Render date: 2024-06-21T16:16:47.486Z Has data issue: false hasContentIssue false
  • English
  • Français

The Solubility of Amorphous and Crystalline Schoepite in Neutral to Alkaline Aqueous Solutions

Published online by Cambridge University Press:  26 February 2011

Jordi Bruno  and
Amaia Sandino
Jordi Bruno
Affiliation:
Department of Inorganic Chemistry, Royal Institute of Technology S—100 44, Stockholm, Sweden.
Amaia Sandino
Affiliation:
Department of Inorganic Chemistry, Royal Institute of Technology S—100 44, Stockholm, Sweden.
Get access

Abstract

The solubility of schoepite, UO2(OH)2 H2O, has been investigated by potentiometric titration at 25 °C in 0.5 mol dm.−3 NaClO4 solution. The data indicates the predominance of the species (UO2)3(OH)5+ and either UO2(OH)3− or (UO2)3(OH)7− in the pH range studied. The formation constants of these species as well as the solubility product of the amorphous and microcrystalline schoepite have been determined. The consequences of these data on the hypothesis of schoepite as the solubility limiting phase in spent fuel dissolution studies is discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 127: Symposium BERLIN – Scientific Basis for Nuclear Waste Management XII , 1988 , 871
Copyright
Copyright © Materials Research Society 1989

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.)

References

REFERENCES

1. Forsyth, R.S., Werme, L.O., SKB-Technical Report No. 87–16, Stockholm, 1987.Google Scholar
2. Johnson, L.J., Shoesmith, D.W., Lunansky, G., Bailey, M., and Tremaine, P.R., Nucl. Techn. 56, 238 (1982).Google Scholar
3. Forsyth, R.S., Werme, L.O., and Bruno, J., J. Nucl. Mat. 138, 1 (1986).Google Scholar
4. Hostetler, P.B., and Garrels, R.M., Econ. Geolg. 57, (2), 137 (1962).Google Scholar
5. Wang, R., PNL Report No. 3566, Pacifie Northwest Laboratory, Richland, 1981.Google Scholar
6. Wang, R., and Katayama, J.B., Nucl. Chem. Wast. Manag. 3, 83 (1982).Google Scholar
7. Stroes—Gascoyne, S., Johnson, L.H., Beeley, P.A., and Sellinger, D.M., in Scientific Basis for Nuclear Waste Management IX. edited by Werme, L.O. (Mater. Res. Soc. Proc. 50, Stockholm, 1985) pp. 317–326.Google Scholar
8. Gaver, K.H., Haas, R.M., and Thompson, L.C., J. Inorg. Nucl. Chem. 26, 1041 (1969)Google Scholar
9. Gayer, K.H., and Leider, H., J. Amer. Chem. Soc. 77, 1448 (1955).Google Scholar
10. Nikitin, A.A., Sergeeva, Z.I., Khodakousky, I.L., and Naumov, G.B., Geokhimiia 3, 297 (1972).Google Scholar
11. Baes, C. F., and Mesmer, R. E., The hydrolysis of cations, edited by J. Wiley & Sons, Inc. (New York, 1976), p. 177.Google Scholar
12. Krupka, K.M., Rai, D., Fulton, R.W., and Strickert, R, in Scientific Basis for Nuclear Waste Management VIII, edited by Jantzen, C.M., Stone, J.A., Ewing, R.C. (Mater. Res. Soc. Proc. 44, Boston, 1985) pp. 753–760.Google Scholar
13. Material Characterization Center, Test Methods Submitted for Nuclear Waste Materials Handbook. PNL—3990, Pacific Northwest Laboratory, Richland, Washington 1984.Google Scholar
14. Bruno, J., Grenthe, I., and Munoz, M., in Scientific Basis for Nuclear Waste Management IX. edited by Werme, L.O. (Mater. Res. Soc. Proc. 50, Stockholm, 1985) pp. 717–726.Google Scholar
15. Bruno, J., J. Chem. Soc. Dalton Trans. 1987. 2431.CrossRefGoogle Scholar
16. Östhol, E., Trita–OOK–1024, Royal Institute of Technology, Stockholm, 1988.Google Scholar
17. Robbins, J.C., Can. Inst. Min. Met. Bull. 5, 61 (1978).Google Scholar
18. Robbins, J.C., Geo—analysis 1978, 78.Google Scholar
19. Johansson, L., Coord. Chem. Rev. 3, 293 (1968).CrossRefGoogle Scholar
20. Langmuir, D., Geochim. Cosmo. Acta 42, 547 (1978).CrossRefGoogle Scholar
21. Lemire, R. L., and Tremaine, P.R., J. Chem. Eng. Data 25, 361 (1980).Google Scholar
22. Lemire, R. L., AECL Report No. 9549, 1988.Google Scholar
23. Sylva, R. N., and Davidson, M. R., J. Chem. Soc. Dalton Trans. 8, 465 (1979).Google Scholar
24. Biedermann, G., Bruno, J., Ferri, D., Grenthe, I., Salvatore, F., and Spahiu, K., in Scientific Basis for Radioactive Waste Management V. edited by Lutze, W., (Mater, res. Soc. Proc. 11, berlin, 1982) pp. 791–800.Google Scholar
25. Ciavatta, L., Anali di Chimica Soc. Chim. It. 1980, 551.Google Scholar
26. Tasker, I. R., O'Hare, P. A. G., Lewis, B.M., Johnson, G.K., and Cordfunke, E.H.P., LLNL Report No. UCRL-21055, 1987.Google Scholar
27. Bruno, J., to be published in Acta Chem. Scan. 1988.Google Scholar
28. Musikas, C., Radiochem. Radioanal. Letters 11, 307 (1972).Google Scholar
29. Bruno, J., and Puigdomenech, I., presented at the 1988 MRS Autumn Meeting, Berlin, 1988 (unpublished).Google Scholar
30. Tsymbal, C., Comm. Energ. At. Fr. Report No. CEA-R-3476 1969.Google Scholar
31. Sutton, J., J. Chem. Soc., 1949. S275.Google Scholar
32. Ollila, K., YJT Report No. 88–04, 1988.Google Scholar
33. Forsyth, R. S., (private communication).Google Scholar