Analytical Sciences


Abstract − Analytical Sciences, 34(9), 1099 (2018).

Continuous Liquid–Liquid Extraction of Uranium from Uranium-containing Wastewater Using an Organic Phase-refining-type Emulsion Flow Extractor
Tetsushi NAGANO,* Hirochika NAGANAWA,* Hideya SUZUKI,** Masaaki TOSHIMITSU,* Hisayoshi MITAMURA,* Nobuyuki YANASE,* and Bernd GRAMBOW*
*Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
**Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
A previously reported emulsion flow (EF) extraction system does not equip the refining device for any used organic phase. Therefore, the processing of large quantities of wastewater by using the EF extractor alone could lead to the accumulation of extracted components into the organic phase, and a lowering of the extraction performance. In the present study, we developed an organic phase-refining-type EF system, which is equipped with a column for refining a used organic phase to prevent accumulation, and successfully applied it for treating uranium-containing wastewater.