Separation of Am, Eu And Ce from Liquid Wastes with CMPO by Extraction Chromatography

Summary

In the frame of partitioning of genuine concentrated nitric acid intermediate level waste solutions, the trivalent actinides and lanthanides have been separated with CMPO by the use of extraction chromatography. The influence of numerous elements occurring in the ILW solutions on the loading capacity of the resins have been investigated. A very interesting result is revealed by the fact that molybdenum causes large losses on the capacity of the resin, which can be avoided either by complexing the Mo species with citric or oxalic acid or by removing it by sorption on manganese dioxide. The loading capacity was more than 20 g/kg, and the performance of the loading and the elution can be significantly improved at higher temperatures up to 75 °C.