ピューレックスプロセスにおける酸共存放射線劣化ドデカンへのウラン担持

抄録

Radiation effects on the uranium retention property of degraded n-dodecane by acidic radiolysis in the Purex process were studied. The absorbed dose of n-dodecane varied from 24.04 to 2403.69 kGy (5 to 500 Wh/dm³) . When the absorbed dose exceeded 48.07 kGy (10 Wh/dm³), the uranium (UO₂²⁺) was retained in degraded n-dodecane even without TBP as extractant. An empirical correlation of the uranium retention was also derived. This correlation is a very effective one because it can especially be used for the prediction of the amount of retained uranium in the degraded n-dodecane. Data obtained through this work should be useful for the process design under solvent degradation conditions in nuclear fuel processing facilities especially in reused solvent.