Title :
Liquid-liquid two-phase microflow patterns and mass transfer of radionuclides
Author :
Helle, Gwendolyne ; Mariet, Clarisse ; Cote, Gerard
Author_Institution :
DEN, CEA Saclay, Gif-sur-Yvette, France
Abstract :
Two phases (liquid-liquid extraction) stratified flows in a rectangular geometry are analyzed in a double-Y shape glass chip. The influence of physical properties, in particular the viscosity of the two liquids affects the microflow. The extraction conditions (acid concentrations, contact times) in batch and in the microfluidic device were considered for a liquid anion exchanger and a neutral extractant for the extraction of U(VI) and Eu(III), respectively. From the relationship between the outlet analyte concentrations and the contact times, the initial rate constants are determined for U(VI) and Eu(III).
Keywords :
charge exchange; europium; mass transfer; microfluidics; negative ions; pattern formation; radioisotopes; stratified flow; two-phase flow; uranium; viscosity; Eu(III); U(VI); acid concentrations; contact times; double-Y shape glass chip; liquid anion exchanger; liquid-liquid two-phase microflow patterns; mass transfer; microfluidic device; neutral extractant; radionuclides; rectangular geometry; two phase stratified flows; viscosity; Chemicals; Kinetic theory; Liquids; Microchannels; Microfluidics; Temperature measurement; Viscosity; Flow pattern; Hydrodynamics; Kinetics; Lab-on-chip; Microchannel chip; Radionuclide; Separation; Solvent extraction;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2014 9th IEEE International Conference on
Conference_Location :
Waikiki Beach, HI
DOI :
10.1109/NEMS.2014.6908781
