Extraction properties of glycine-based amic-acid-type extractants for minor actinides and rare-earth elements

Nakamura, Satoshi ; Suzuki, Hideya*; Ban, Yasutoshi ; Ohashi, Akira*

To reduce volume and radiotoxicity of high-level radioactive waste, JAEA has been developing a separation process recovering minor actinides (MA) from high-level radioactive liquid-waste. In the separation process, separating trivalent MA such as Am and Cm, from RE is challenging due to their similar chemical properties. In this study, extraction properties of three different glycine-based amic-acid-type extractants for MA(III) and RE(III) were studied by a single-stage batch method. The results revealed that the distribution ratios of all metal ions increased with an increase of equilibrium pH, and all extractants showed higher distribution ratios for Am than for RE.

Language	:	English
Journal	:	Progress in Nuclear Science and Technology (Internet)
Volume	:	8
Number	:
Pages	:	p.228 - 232
Publication Year/Month	:	2025/09
Meeting title	:	International Conference on Nuclear Fuel Cycle (GLOBAL2024)
Held date	:	2024/10
Location (city)	:	Tokyo
Location (country)	:	Japan
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Paper URL	:	https://doi.org/10.15669/pnst.8.228
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	溶媒抽出; MA分離; マイナーアクチノイド; グリシン系アミド酸型抽出剤; 分離変換
Research Facility	:	BECKY(バックエンド研究施設)
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Registration No. : BB20240071
JAEA Abstracts No. : 53001151
Paper Submission No. : 30047

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