Journal of Radioanalytical and Nuclear Chemistry

, Volume 306, Issue 2, pp 417–421 | Cite as

The nature of the volatile technetium species formed during vitrification of borosilicate glass

  • Bradley C. Childs
  • Frederic Poineau
  • Kenneth R. Czerwinski
  • Alfred P. Sattelberger
Article

Abstract

Vitrification of sodium pertechnetate into borosilicate glass was performed in air at 1100 °C. A glass with a composition similar to the one developed for vitrification of the low activity waste at the Hanford site was used. A red volatile species was observed above 600 °C. The extended X-ray absorption fine structure results indicate the environment of the absorbing Tc atom consists of 2.9(6) O atoms at 1.73(2) Å, 2.2(4) O atoms at 2.02(2) Å, and 0.8(2) O atoms at 2.18(2) Å. The results are consistent with the presence of a mononuclear species with a structure closely related to TcO3(OH)(H2O)2.

Keywords

Technetium Volatile Red Vitrification X-ray absorbance spectroscopy 

Notes

Acknowledgments

Use of the Advanced Photon Source at Argonne was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The authors thank Trevor Low, and Julie Bertoia for outstanding health physics support and Dr. Sungsik Lee at the APS for support during XAS experiments.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2015

Authors and Affiliations

  • Bradley C. Childs
    • 1
  • Frederic Poineau
    • 1
  • Kenneth R. Czerwinski
    • 1
  • Alfred P. Sattelberger
    • 1
    • 2
  1. 1.Department of ChemistryUniversity of Nevada Las VegasLas VegasUSA
  2. 2.Energy Engineering and Systems Analysis DirectorateArgonne National LaboratoryLemontUSA

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