Methods of capturing and immobilizing radioactive nuclei with metal fluorite-based inorganic materials
| DWPI Title: Synthesis of metal fluorite-based inorganic material used in e.g. off-gas treatment, involves adding precipitant to reaction vessel comprising solution containing aluminum and fluorine precursors, and isolating precipitate |
| Abstract: Methods of capturing and immobilizing radioactive nuclei with metal fluorite-based inorganic materials are described. For example, a method of capturing and immobilizing radioactive nuclei includes flowing a gas stream through an exhaust apparatus. The exhaust apparatus includes a metal fluorite-based inorganic material. The gas stream includes a radioactive species. The radioactive species is removed from the gas stream by adsorbing the radioactive species to the metal fluorite-based inorganic material of the exhaust apparatus. |
| Use: Synthesis of metal fluorite-based inorganic material used as nanoporous material (claimed) in off-gas treatment for fuel reprocessing, nuclear waste disposal and as adsorbents for gaseous radionuclides e.g. iodine at elevated temperature and in treatment of other radionuclides and non-radioactive hazardous materials, e.g. iodine including 129I both in gaseous and anionic forms such as I- and IO3-, 99Tc and in anionic forms such as TcO4-, and radioactive isotopes of plutonium, americium, uranium, thorium, neptunium, selenium, cesium, strontium, carbon, chlorine, hydrogen, xenon and krypton in the forms of molecular species, cations and anions. |
| Advantage: The method enables synthesis of metal fluorite-based inorganic material having excellent sorption capabilities of gaseous radionuclides, chemical stability, and ideal for use in extreme chemical and physical environments e.g. acidic elevated temperature environment. |
| Novelty: Synthesis of metal fluorite-based inorganic material involves charging (402) reaction vessel with a solution comprising an aluminum precursor and a fluorine precursor, adding (404) a precipitating agent to the solution, and isolating (406) an aluminum-rich fluorite precipitate. |
| Filed: 3/4/2015 |
| Application Number: US14638837A |
| Tech ID: SD 11915.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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