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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 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
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| Authors: |
Engelmann, Mark D.;
Metz, Lori A.;
Ballou, Nathan E.
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| Publication Date: | 2006 May 01 |
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| OSTI Identifier: | 885448 |
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| Report Number(s): | PNNL-SA-46393 |
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| DOE Contract Number: | AC05-76RL01830 |
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| Resource Type: | Journal Article |
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| Resource Relation: | Journal Name: Journal of Radioanalytical and Nuclear Chemistry; Journal Volume: 268; Journal Issue: 2 |
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| Research Org: | Pacific Northwest National Laboratory (PNNL), Richland, WA (US) |
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| Sponsoring Org: | USDOE |
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| Country of Publication: | United States |
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| Language: | English |
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| Other Number(s): | Journal ID: ISSN 0236-5731; JRNCDM; Other: NN2001000; TRN: US0603865 |
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| Subject: | 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; CHARCOAL; DRY ASHING; MATERIAL BALANCE; SOLVENT EXTRACTION; TECHNETIUM; MATERIALS RECOVERY |
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| Update Date: | 2009 Dec 16 |
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