Abstract
A series of glass samples were prepared analogously to high level waste glass using either glass frit or glass precursors combined with a high level waste surrogate containing NaTcO4. Three different technetium species were observed in these glasses depending upon the synthesis conditions. If the glasses were prepared by reducing NaTcO4 to TcO2•2H2O with hydrazine or if a large amount of organic material was present, inclusions of TcO2 were observed. If no organic material was present, technetium was incorporated as \(TcO_4^ - \). If only a small amount of organic material was present, isolated Tc(IV) sites were observed in the glass. The relative technetium retention of these glasses was estimated from the Tc K-edge height, and had no correlation with the oxidation state of the technetium. Pertechnetate was well retained in these glasses.
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References
Langowski M.; Darab J.; Smith P. “Volatility Literature of Chlorine, Iodine, Cesium, Strontium, Technetium and Rhenium; Technetium and Rhenium Volatility Testing,” PNNL-11052, Pacific Northwest National Laboratory, 1996.
Darab J.; Smith P. Chem. Mater. 1996, 8, 1004.
Antonini M.; Merlini A.; Thornley R. J. Non-Cryst. Sol. 1985, 77, 219.
Bucher J. J.; Allen P. G.; Edelstein N. M.; Shuh D. K.; Madden N. W.; Cork C.; Luke P.; Pehl D.; Malone D. Rev. Sci. Instrum. 1996, 67, 4.
Lukens W. W.; Bucher J. J.; Edelstein N. M.; Shuh D. K. Environ. Sci. Technol. 2002, 36, 1124.
Golcar G. R.; Colton N. G.; Darab J. G.; Smith H. D. “Hanford Waste Tank Simulants Specification and Their Applicability for the Retrieval, Pretreatment, and Vitrification Process,” PNWD-2455, Pacific Northwest National Laboratory, 2000.
Freude E.; Lutze W.; Russel C.; Schaeffer H. Mat. Res. Soc. Symp. Proc. 1989, 727, 199.
Almahamid I.; Bryan J. C.; Bucher J. J.; Burrell A. K.; Edelstein N. M.; Hudson E. A.; Kaltsoyannis N.; Lukens W. W.; Shuh D. K.; Nitsche H.; Reich T. Inorg. Chem. 1995, 34, 193.
Nelson C.; Boyd G.; Smith W. J. Am. Chem. Soc. 1954, 76, 348.
Spitsyn V.; Kuzina A.; Oblova A.; Shakh G.; Gavrish A.; Belyaeva L. Russ. J. Inorg. Chem. 1978, 23, 484.
Acknowledgment
This work was supported by the Environmental Management Science Program of the U.S. DOE Office of Science, Biological and Environmental Research, Environmental Remediation Sciences Division and was performed at the Lawrence Berkeley National Laboratory, which is operated by the U. S. DOE under Contract No. DE-AC03-76SF00098. Portions of this research were carried out at the Stanford Synchrotron Radiation Laboratory, a national user facility operated by Stanford University on behalf of the U.S. Department of Energy, Office of Basic Energy Sciences.
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Lukens, W.W., Shuh, D.K., Muller, I.S. et al. X-ray Absorption Fine Structure Studies of Speciation of Technetium in Borosilicate Glasses. MRS Online Proceedings Library 802, 99–104 (2003). https://doi.org/10.1557/PROC-802-DD3.3
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DOI: https://doi.org/10.1557/PROC-802-DD3.3