|
内容記述 |
Radioactive liquid waste containing nuclear fuel materials and chemical reagents is stored in nuclear facilities. To eliminate the radioactivity of the radioactive liquid waste, we developed RFIDA, a new perfluoroalkyl (RF)- based ligand with a basic structure of iminodiacetic acid (IDA). In this study, a solvent extraction test was conducted to confirm that the synthesized RFIDA adsorbs cations, and an adsorption test was conducted by impregnating RFIDA into porous silica with a polymer. To understand the adsorption mechanism, the adsorption of Eu on RFIDA and the coordination status of RFIDA with Eu-bearing functional groups were analyzed by particle-induced X-ray emission (PIXE) and ion beam-induced luminescence (IBIL) analyses, respectively. The PIXE analysis revealed the adsorption performance of RFIDA. The complex status of Eu was investigated using IBIL analysis, and the results showed that Eu and NO3possibly coordinated with the functional group. The solid adsorbent impregnated with RFIDA also complexes with Eu in the same chemical form as in solvent extraction. |
