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Incorporation of Radionuclides into Mineral Phases via a Thermally Unstable Complexant Ligand

Published online by Cambridge University Press:  01 January 1992

Allen W. Apblett ,
Galina D. Georgieva  and
Joel T. Mague
Allen W. Apblett
Affiliation:
Tulane University, Department of Chemistry, New Orleans, LA 70118
Galina D. Georgieva
Affiliation:
Tulane University, Department of Chemistry, New Orleans, LA 70118
Joel T. Mague
Affiliation:
Tulane University, Department of Chemistry, New Orleans, LA 70118
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Abstract

The complexation and thermal behavior of pyruvic acid oxime (PAO) with representative cations associated with nuclear reprocessing waste has been investigated. This ligand has the dual advantage that it precipitates most of the cations from solution and these complexes decompose at ca. 150°C to CO2, acetonitrile, and, initially, the metal hydroxide. Introduction of the appropriate elements required for Synroc phases to a simulated waste stream followed by NaPAO and disodium fumarate leads to precipitation of a metalorganic Synroc precursor in which the components have been intimately mixed at the molecular level. This approach circumvents incorporation of alkali metals in the final ceramic.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 294: Symposium V – Scientific Basis for Nuclear Waste Management XVI , 1992 , 123
Copyright
Copyright © Materials Research Society 1993

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References

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