Hostname: page-component-84b7d79bbc-x5cpj Total loading time: 0 Render date: 2024-07-27T21:04:55.655Z Has data issue: false hasContentIssue false
  • English
  • Français

Uranium Redox States in Borosilicate Compositions

Published online by Cambridge University Press:  17 March 2011

A.S. Aloy ,
A.V. Trofimenko ,
O.A. Iskhakova  and
L.J. Jardine
A.S. Aloy
Affiliation:
RPA « V.G. Khlopin Radium Institute»
A.V. Trofimenko
Affiliation:
RPA « V.G. Khlopin Radium Institute»
O.A. Iskhakova
Affiliation:
RPA « V.G. Khlopin Radium Institute»
L.J. Jardine
Affiliation:
University of California, Lawrence Livermore National Laboratory, USA
Get access

Abstract

The results of the studies of uranium valent states in the borosilicate glasses incorporating the components of uranium-containing sludge of Mining and Chemical Combine (MCC, Zheleznogorsks.) is presented in this work. The glasses were made under oxidative and reducing conditions.

The optical spectrophotometry, nuclear gamma-resonance (NGR) and X-ray diffraction (XRD) showed that glasses produced under oxidative conditions are characterized by the presence of only U(6+), while U(4+) in the reducing conditions is present along with U(6+). The ratio U(6+)/to U(4+) varies in depending on the synthesis conditions.

The glass samples synthesized under oxidative conditions were researched at initial solid state. The others synthesized under reducing conditions was dissolved preliminary without distort of uranium valency.

The effect of U(4+)/U(6+) ratio on the uranium leach rates from the glasses has been studied at 90° using MCC-1 test.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 824: Symposium CC – Scientific Basis for Nuclear Waste Management XXVIII , 2004 , CC8.17
Copyright
Copyright © Materials Research Society 2004

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

1. Schreiber, H.D., Balazs, G.B., Williams, B.J., e.a. Structural and redox properties of uranium in Ca-Mg-Al-Silicate glasses, Sci. Basis for Nucl. Waste Managem.-1981.-V.3, p.109–114 Google Scholar
2. Schreiber, H.D., Balazs, G.B. J. Phys. Chem. Glasses.-1982.-V.23.-P139–146 Google Scholar
3. Schreiber, H.D., Balazs, G.B., Williams, B.J. J. Amer. Ceramic Soc.-1982.-V.65-P/ 449–453 Google Scholar
4. Schreiber, H.D. J. Less-Common Metal-1983.-V.91-P. 129–147 Google Scholar
5. Matjunin, Yu.I., Demin, F.V., Teterin, E.G. Physics and Chemistry of Glass. V.65. No. 1. pp. 612–619 (in Russian).Google Scholar
6. Karraker, D.G. J. Am. Ceram. Soc. 1982. Vol. 65, N 1. P. 53–55.Google Scholar
7. Eller, P.G., Jarvinnen, G.D., Purson, J.G., Penneman, R.A., Ryan, R.R., Lytle, F.W. and Greegor, R.B. J. Radiochim. Acta. 1985. Vol. 37, P. 17–22 Google Scholar
8. Calas, G. J. Geochimica et Cosmochimica Acta. 1979. Vol 43, P. 1521–1531.Google Scholar
9. Haire, R.G., Dai, S., Stump, N. Mat. Res. Soc. Symp. Proc. 1997. Vol. 465, P. 47–54.Google Scholar
10. Haire, R.G., Assefa, Z., Stump, N. Mat. Res. Soc. Symp. Proc. 1998. Vol. 506, P. 153–160.Google Scholar
11. Barbanel, Ju. A.. Coordination chemistry of f-elements in melts (in Russian). Energoatomizdat, Moscow, 1985.Google Scholar