Identification of the non-pertechnetate species in Hanford waste tanks, Tc(I) carbonyl complexes
- LBNL Library
Immobilization of the high-level nuclear waste stored at the Hanford Reservation has been complicated by the presence of soluble, lower-valent technetium species. Previous work by Schroeder and Blanchard has shown that these species cannot be removed by ion-exchange and are difficult to oxidize. The Tc-K edge XANES spectra of the species in Tanks SY-101 and SY-103 were reported by Blanchard, but they could not be assigned to any known technetium complex. We report that the XANES spectra are most likely those of Tc(I) carbonyl species, especially fac-Tc(CO){sub 3}(gluconate){sup 2-}. This is further supported by EXAFS and {sup 99}Tc-NMR studies in nonradioactive simulants of these tank wastes.
- Research Organization:
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
- Sponsoring Organization:
- USDOE Director. Office of Science. Biological and Environmental Research (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 823079
- Report Number(s):
- LBNL--53556
- Journal Information:
- Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 1 Vol. 38; ISSN ESTHAG; ISSN 0013-936X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Spectroscopic Properties of Tc(I) Tricarbonyl Species Relevant to the Hanford Tank Waste
Identification and Quantification of Technetium Species in Hanford Waste Tank AN-102
Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
CARBONYLS
HANFORD RESERVATION
ION EXCHANGE
PERTECHNETATES
RADIOACTIVE WASTES
SPECTRA
TANKS
TECHNETIUM
TECHNETIUM HANFORD PERTECHNETATE WASTE
WASTES