Mutual separation of light lanthanides using multi-stage extraction with DGA extractant

Matsutani, Takafumi*; Sasaki, Yuji  ; Katsuta, Shoichi*

The mutual separation of lanthanide is difficult because the chemical behavior of lanthanides is very analogous. Thus, the task to develop the mutual separation method among lanthanide is important. Here, we examined to separate lanthanides using batch-wise multi-stage extraction with TDDGA. The batch-wise multi-stage extraction can be evaluated based on the plate-theory of chromatography, thus we investigated the basic results of batch-wise multi-stage extractions.