|
1
|
Takahatake Y, Watanabe S, Arai T, Satoh T, Shibata A. Improvement in the elution performance of an N,N,N',N-tetraoctyl diglycolamide impregnated extraction chromatography adsorbent using neodymium via micro-particle-induced X-ray emission analysis. Appl Radiat Isot 2023; 196:110783. [PMID: 36958080 DOI: 10.1016/j.apradiso.2023.110783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/16/2023] [Accepted: 03/17/2023] [Indexed: 03/22/2023]
Abstract
An adsorbent used for the recovery of trivalent minor actinides (MA(III); Am and Cm) from high level liquid waste generated from reprocessing of spent nuclear fuel was subjected to micro-particle induced X-ray emission (micro-PIXE) analysis to improve its elution performance. The experimental adsorbent comprised SiO2 particles, a polymer coating, and an N,N,N',N'-tetraoctyl diglycolamide (TODGA). The particles to be analyzed were subjected to Nd adsorption and an elution operation, but Nd in the adsorbent was found to be uniformly distributed. This might have been caused by individual differences in the amount of impregnated TODGA. The remaining Nd species were not localized to a specific part of the adsorbent after the adsorption operation. Some Nd elements were retained in the adsorbent after elution, probably because of the poor diffusion of the mobile phase inside the adsorbent. An adsorbent having a different microstructure from the first was then evaluated, and rapid elution was observed on new adsorbent along micro-PIXE analysis.
Collapse
Affiliation(s)
- Youko Takahatake
- Japan Atomic Energy Agency, 4-33, Muramatsu, Tokai-mura, Ibaraki, 319-1194, Japan.
| | - Sou Watanabe
- Japan Atomic Energy Agency, 4-33, Muramatsu, Tokai-mura, Ibaraki, 319-1194, Japan.
| | - Tsuyoshi Arai
- Department of Material Science and Engineering, Faculty of Engineering, Shibaura Institute of Technology, 3-7-5, Toyosu, Koutouku, Tokyo, 135-8548, Japan.
| | - Takahiro Satoh
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum Science and Technology, 1233, Watanuki-machi, Takasaki, Gunma, 370-1292, Japan.
| | - Atsuhiro Shibata
- Japan Atomic Energy Agency, 4-33, Muramatsu, Tokai-mura, Ibaraki, 319-1194, Japan.
| |
Collapse
|
|
2
|
Design of MA(III)/Ln(III) separation process of extraction chromatography technology. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08658-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
|
3
|
Recovery of actinides from acidic waste solutions generated in research facilities using adsorption and extraction techniques. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08451-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|