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E.V. Belova,I.V. Skvortsov,M.I. Kadyko,S.V. Yudintsev 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.4
Hydrodynamic properties have been investigated for promising extraction systems: 0.05 mol L-1 solutionsof di(N-ethyl-4-ethylanilide) of 2,20-bipyridine-6,60-dicarboxylic acid, di(N-ethyl-4-fluoroanilide) of2,6-pyridinedicarboxylic acid and di(N-ethyl-4-hexylanilide) of 2,20-bipyridine-6,60-dicarboxylic acid inmeta-nitrobenzotrifluoride (F-3) or trifluoromethylphenyl sulfone (FS-13) diluents. To evaluate theperspectives for their use as extraction mixtures at the final stage of the nuclear fuel cycle, the change indensity, viscosity, surface tension, and phase separation rate under irradiation with accelerated electronswas studied. The concentrations of extractants in the irradiated mixtures have been determined and theradiation-chemical yields have been calculated. Irradiation significantly decreases the phase separationrate at the stages of extraction and back extraction for all the studied systems. The viscosity of the DYP-7solution in FS-13 increase above the values suitable for its use in extraction processes.