[3I01-03] Development of minor actinide recovery processes 1

[3I02] Radiolysis of HONTA extractant for MA/RE separation

*Tomohiro Toigawa¹, Hideya Suzuki¹, Yasutoshi Ban¹, Sho Ishii¹, Tatsuro Matsumura¹ (1. Japan Atomic Energy Agency)

Keywords:MA/RE separation, solvent extraction, HONTA, Rasiolysis

Degradation of extractants and generation of radiolytic products are considered as problem for feasibility of the minor actinides separation process. In this study, degradation amount of hexaoctyl-nitrilotriacetamide (HONTA), which is a candidate extaractant for MA/Ln separation, and its products yields were obtained by using gamma-rays emitted from Co-60. Our results showed the cleavage sites in HONTA radiolysis and suggest that the mechanism for HONTA radiolysis is differ depending on the absorbed dose.