Recovery of technetium adsorbed on charcoal

Recovery of technetium adsorbed on charcoal

Two methods capable of near complete recovery of technetium adsorbed on charcoal are presented. The first involves liquid extraction of the technetium from the charcoal by hot 4M nitric acid. An average recovery of 98% (n=3) is obtained after three rounds of extraction. The second method involves dr...

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Veröffentlicht in:Journal of radioanalytical and nuclear chemistry 2006-05, Vol.268 (2), p.201-204
Hauptverfasser: Engelmann, M. D., Metz, L. A., Ballou, N. E.
Format: Artikel
Sprache:eng
Schlagworte:
CHARCOAL
DRY ASHING
MATERIAL BALANCE
MATERIALS RECOVERY
RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
SOLVENT EXTRACTION
TECHNETIUM
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Zusammenfassung:Two methods capable of near complete recovery of technetium adsorbed on charcoal are presented. The first involves liquid extraction of the technetium from the charcoal by hot 4M nitric acid. An average recovery of 98% (n=3) is obtained after three rounds of extraction. The second method involves dry ashing with air in a quartz combustion tube at 400-450 degrees C. This method yields an average recovery of 96% (n=5). Other thermal methods were attempted, but resulted in reduced recovery and incomplete material balance
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-006-0154-1