[3H01-04] MA recovery 1

[3H03] Hybrid Process Combining Solvent Extraction and Low Pressure Loss Extraction Chromatography for a Reasonable MA Recovery

(3)Kinetic analysis of extraction/back extraction at high concentration of TBP by microspectroscopy

*Yuka Kusano¹, Akihisa Miyagawa¹, Shigenori Nagatomo¹, Kiyoharu Nakatani¹, Yuichi Sano² (1. Univ. of Tsukuba, 2. JAEA)

Keywords:Minor actinide, Solvent extraction, TBP

We measured the concentration dependencies of TBP, nitric acid, and nitrate ion for extraction and back extraction rates of FP (Ln) in a single microdroplet/solution system by fluorescence microspectroscopy technique, and determined mass transfer coefficients at the oil/water interfaces. The mass transfer coefficients, influenced significantly by those concentrations, will be discussed in detail.