Process for separating americium from other metallic elements present in an acidic aqueous or organic phase and applications thereof

摘要

The present invention relates to a process that makes it possible to separate the americium present in an acidic aqueous phase or in an organic phase from other metallic elements that are also found in this phase, by complexing the americium with a water-soluble ethylenediamine derivative. It also relates to a process for the selective recovery of americium from an acidic aqueous phase containing, besides the americium, other metallic elements, which comprises the implementation of this separation process. Applications: treatment of spent nuclear fuels.