Separation of 99Tc, 90Sr, 59,63Ni, 55Fe and 94Nb from activated carbon and stainless steel waste samples
| Autor: | Chang Heon Lee, Hee-Jung Im, Kwang-Soon Choi, Jung Bo Yoo, Hong-Joo Ahn |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Ion exchange
Precipitation (chemistry) Chemistry Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Radioactive waste 010501 environmental sciences 010403 inorganic & nuclear chemistry Intermediate level 01 natural sciences Pollution 0104 chemical sciences Analytical Chemistry Nuclear Energy and Engineering medicine Radiology Nuclear Medicine and imaging Nuclide Spectroscopy 0105 earth and related environmental sciences Activated carbon medicine.drug Nuclear chemistry |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 314:2145-2154 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | We herein present a suquential procedure for separation of nuclides such as 55Fe, 94Nb, 59,63Ni, 90Sr, and 99Tc from activated carbon and stainless steel samples orignating from low and intermediate level of radioactive waste. Initially, iron was removed through the precipitation of Fe(OH)3 upon the addition of NH4OH. The recoveries of Fe and Nb in the precipitate were 98.4 ± 2.9 and 98.5 ± 0.52%, respectively, while those of Ni, Re, and Sr in the supernatant were 74.0 ± 4.0, 96.7 ± 1.2, and 79.6 ± 1.2%, respectively. However, due to the especially low recovery of Re from the supernatant following anion exchange chromatography, the Fe precipitate was removed after the separation of Re by anion exchange chromatography. Our results indicate that this procedure is suitable for providing pure nuclides from waste samples to allow the measurement of their radioactive activities. |
| Databáze: | OpenAIRE |
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