Immobilization of strontium by crystalline zirconium phosphate |
| |
| Affiliation: | 1. Department of Applied Chemistry and Biotechnology, Nihama National College of Technology, Niihama 792-8580, Japan;2. Planning and Development Section, Daiichi Kigenso Kagaku Kogyo Co. Ltd., Osaka 541-0043, Japan;1. Shanghai Institute of Applied Physics, CAS, 2019 Jialuo Road, P.O. Box 201-800, Shanghai, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Key Laboratory of Interfacial Physics and Technology, Chinese Academy of Sciences, Shanghai 201800, China;1. Centre for Nuclear Engineering, Imperial College London, London, SW7 2AZ, United Kingdom;2. Centre for Advanced Structural Ceramics, Imperial College London, London, SW7 2AZ, United Kingdom;3. CNRS/IN2P3 and University of Bordeaux, Centre D’Etudes Nucléaires de Bordeaux-Gradignan, UMR, 5797, Gradignan, France;4. ANSTO Synroc, Australian Nuclear Science and Technology Organization (ANSTO), Locked Bag 2001, Kirrawee DC, NSW, 2232, Australia;5. Nuclear Futures Institute, Bangor University, Bangor, Gwynedd, LL57 1UT, UK;1. Institut de Physique Nucléaire de Lyon, CNRS/IN2P3, UMR 5822, Université Claude Bernard Lyon 1, Université de Lyon, 4 rue Enrico Fermi, F-69622 Villeurbanne cedex, France;2. Agence nationale pour la gestion des déchets radioactifs, 1-7 rue Jean Monnet, Parc de la Croix-Blanche, F-92298 Châtenay-Malabry cedex, France;3. Commissariat à l’Energie Atomique et aux Energies Alternatives, CEA/DEN, Centre de Saclay, F-91191 Gif-sur-Yvette cedex, France;4. Institut Universitaire Technologique, Université Claude Bernard Lyon 1, Université de Lyon, 43 boulevard du 11 novembre 1918, F-69622 Villeurbanne cedex, France;1. Chemistry Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India;2. Waste Management Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India;3. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India;4. Atomic & Molecular Physics Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India |
| |
| Abstract: | Mixtures of HZr2(PO4)3 with varying amounts of Sr(NO3)2 were thermally treated at 600–1200 °C in order to investigate the immobilization of radioactive Sr. When the Sr(NO3)2 / HZr2(PO4)3=0.2 mixture was thermally treated at 700 °C, the main product was postulated to be SrZr4(PO4)6 from the XRD results. The Sr(NO3)2/HZr2(PO4)3=0.2 immobilized product thermally treated at 700 °C containing the maximum amount of immobilized Sr (a 0.2 molar ratio of Sr(NO3)2/HZr2(PO4)3 equates to approximately 4 wt.% of Sr) had minimal Sr leaching rates in several solvents at 160 °C in an autoclave. The leaching rate of Sr ion from that product was <10−6, 1.3×10−4, 1.4×10−4, 1.1×10−3, 2.0×10−3, 8.8×10−3 and <10−6 g m−2 day−1 in deionized water, sea water, 0.1 mol l−1- HCl, 0.5 mol l−1- HCl, 1 mol l−1- HCl, 1.5 mol l−1- HCl and 1 mol l−1- NH3 in an autoclave at 160 °C, respectively, indicating that HZr2(PO4)3 reacts with Sr(NO3)2 to give a stable Sr-immobilized product. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
