Hostname: page-component-54dcc4c588-64p75 Total loading time: 0 Render date: 2025-10-09T18:36:56.498Z Has data issue: false hasContentIssue false
  • English
  • Français

Synroc Derivatives for the Hanford Waste RemediationTask

Published online by Cambridge University Press:  03 September 2012

E. R. Vance ,
K. P. Hart ,
R. A. Day ,
M. L. Carter ,
M. Hambley ,
M. G. Blackford  and
B. D. Begg
E. R. Vance
Affiliation:
Australian Nuclear Science and Technology Organisation, Menai, NSW 2234, Australia fax 61–2–9534–7179, phone 61–2–9717–3019, email erv@nucleus.ansto.gov.au
K. P. Hart
Affiliation:
Australian Nuclear Science and Technology Organisation, Menai, NSW 2234, Australia fax 61–2–9534–7179, phone 61–2–9717–3019, email erv@nucleus.ansto.gov.au
R. A. Day
Affiliation:
Australian Nuclear Science and Technology Organisation, Menai, NSW 2234, Australia fax 61–2–9534–7179, phone 61–2–9717–3019, email erv@nucleus.ansto.gov.au
M. L. Carter
Affiliation:
Australian Nuclear Science and Technology Organisation, Menai, NSW 2234, Australia fax 61–2–9534–7179, phone 61–2–9717–3019, email erv@nucleus.ansto.gov.au
M. Hambley
Affiliation:
Australian Nuclear Science and Technology Organisation, Menai, NSW 2234, Australia fax 61–2–9534–7179, phone 61–2–9717–3019, email erv@nucleus.ansto.gov.au
M. G. Blackford
Affiliation:
Australian Nuclear Science and Technology Organisation, Menai, NSW 2234, Australia fax 61–2–9534–7179, phone 61–2–9717–3019, email erv@nucleus.ansto.gov.au
B. D. Begg
Affiliation:
Australian Nuclear Science and Technology Organisation, Menai, NSW 2234, Australia fax 61–2–9534–7179, phone 61–2–9717–3019, email erv@nucleus.ansto.gov.au
Get access

Abstract

Three wt% each of Cs and Tc were mixed with the standard Synroc precursorand the ceramic was formed by hot-pressing. Attempts were made toincorporate the Tc as either metal or Tc 4+, using differentredox conditions in processing. Volatile losses of Tc during calcinationwere < 0.1% in all cases. Short-term Tc leach rates when the Tc waspresent as a metal alloy were in the order of 10−4 g/m /d at 90°Cwith frequently changed water, and decreased with increasing leaching time.The valence of the Tc was monitored by X-ray absorption spectroscopy at thedrying and calcination stages of the production. The general viability ofSynroc/glass composites for immobilising the Hanford HLW sludges is furtherdemonstrated by using further refinements of additive schemes for theinactive “All-blend” formulation and initial studies using the U-containing“All-blend” waste formulation.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 465: Symposium II – Scienfific Basis for Nuclear Waste Management XX , 1996 , 341
Copyright
Copyright © Materials Research Society 1997

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.)

Article purchase

Temporarily unavailable

References

REFERENCES

1. Vance, E. R., Carter, M. L., Day, R. A. and Jostsons, A., A Melting route to Synroc for Hanford HLW Immobilization, in Scientific Basis for Nuclear Waste Management XIX, Eds. Murphy, W. M. and Knecht, D. A., Materials Research Society, Pittsburgh, PA, USA, p. 289–96 (1996).Google Scholar
2. Hart, K. P., Vance, E. R., Day, R. A., Begg, B. D., Angel, P. J. and Jostsons, A., Immobilization of Separated Tc and Cs/Sr in Synroc, Eds. Murphy, W. M. and Knecht, D. A., Materials Research Society, Pittsburgh, PA, USA, (1996)., 281–7.Google Scholar
3. Ringwood, A. E., Kesson, S. E., Reeve, K. D., Levins, D. M. and Ramm, E. J., in Radioactive Waste Forms for the Future, Eds. Lutze, W. and Ewing, R. C., Elsevier, North-Holland, Amsterdam, Netherlands, pp 233–334 (1988)Google Scholar
4. Vance, E. R., Day, R. A., Zhang, Z., Begg, B. D., Ball, C. J. and Blackford, M. G., J. Solid State Chem. 124, 77 (1996)10.1006/jssc.1996.0210Google Scholar
5. Vance, E. R., Carter, M. L., Day, R. A., Begg, B. D., Hart, K. P. and Jostsons, A., Synroc and Synroc-glass Composite Waste Forms for Hanford HLW Immobilization, Proceedings of the Spectrum ‘96 International Topical Meeting on Nuclear and Hazardous Waste Management, American Nuclear Society, IL, USA, 2072 (1996)Google Scholar