Abstract
The 1-cycle SANEX process has been developed as a simplification of the DIAMEX+SANEX concept by reducing the required process steps from two to one. The goal is to separate americium(III) and curium(III) directly from a PUREX raffinate which is very complicated due to the complex composition of the solution. In previous work, extensive batch studies have been carried out using an organic phase comprising CyMe4-BTBP and TODGA. This system has now been further developed towards a counter-current centrifugal contactor test using a synthetic PUREX raffinate solution. Single stage experiments were carried out to study the extraction kinetics and a 32 stage flow-sheet is proposed with calculated recoveries for some key elements. The calculations show that americium is recovered in the product with only small amounts of impurities. A demonstration process following the designed flow-sheet is expected to fulfill all the requirements for this complicated separation.
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