Development of silver nanoparticle–doped adsorbents for the separation and recovery of radioactive iodine from alkaline solutions
| Autor: | Sang Wook Kim, Seung-Kon Lee, Jun Sig Lee, Tae Woon Kim, Suseung Lee |
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| Rok vydání: | 2017 |
| Předmět: |
Inert
Fission products Radiation Materials science Aluminate Radiochemistry Inorganic chemistry technology industry and agriculture chemistry.chemical_element Radioactive waste Human decontamination 010402 general chemistry 010403 inorganic & nuclear chemistry Iodine 01 natural sciences Silver nanoparticle 0104 chemical sciences chemistry.chemical_compound Adsorption chemistry |
| Zdroj: | Applied Radiation and Isotopes. 129:215-221 |
| ISSN: | 0969-8043 |
| DOI: | 10.1016/j.apradiso.2017.07.033 |
| Popis: | Removing radioactive iodine from solutions containing fission products is essential for nuclear facility decontamination, radioactive waste treatment, and medical isotope production. For example, the production of high-purity fission 99Mo by irradiation of 235U with neutrons involves the removal of iodine from an alkaline solution of the irradiated target (which contains numerous fission products and a large quantity of aluminate ions) using silver-based materials or anion-exchange resins. To be practically applicable, the utilized iodine adsorbent should exhibit a decontamination factor of at least 200. Herein, the separation of radioactive iodine from alkaline solutions was achieved using alumina doped with silver nanoparticles (Ag NPs). Ag NPs have a larger surface area than Ag powder/wires and can thus adsorb iodine more effectively and economically, whereas alumina is a suitable inert support that does not adsorb 99Mo and is stable under basic conditions. The developed adsorbents with less impurities achieved iodine removal and recovery efficiencies of 99.7 and 62%, respectively, thus being useful for the production of 131I, a useful medical isotope. |
| Databáze: | OpenAIRE |
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