Electroinduced drift of solvated ions in salt solution of Ce and Ni

Abstract

This paper shows the selective drift of cationic aqua complexes of chloride salts of metal ions in aqueous solutions under the exposure an asymmetric electric field (100 Hz, 750/150 V). The spatial distribution of Ce 3+ and Ni 2+ cations was demonstrated, and the maximum cation separation coefficients in the longitudinal section of the inter-electrode space were calculated for the stationary and circulating solution for different exposure durations of the electric field and solution circulation rates. A decrease in the relative concentration of cations was observed when moving from top down of the experimental cell, while the direction of cation drift along the sectional plane was independent of the distance from electrodes, the solution circulation rate, and nature of metal. It was established that while the solution moved from the grounded electrode to the potential electrode along the bottom and top parts of the sections, there was a decrease of concentrations of both cations in the central part of the cell and an increase near the electrodes. On the basis of the obtained data, the optimal points of sampling and drop were determined. The calculated maximum separation coefficients of Ce 3+ and Ni 2+ ions were 1.200 ± 0.108 and 1.036 ± 0.025, for the stationary and circulating solution at a rate of 7 L•h −1 , respectively.

Capability assessment of production of n.c.a. isotope 177Lu on the average flux reactor IRT-T

“…In order to significantly increase the activity of the lutetium isotope obtained during the reaction, it is necessary to use an ytterbium target enriched by 176 Yb isotope by at least 90%, for example, ytterbium can be enriched by electromagnetic or gas centrifuges [4] for the subsequent separation of lutetium from the ytterbium target, both classical separation methods can be used, for example, extraction [5], cementation [6], separation using an ion-exchange resin [7], and non-classical methods, for example, thermal methods [8] or the method or methods operating under the action of an external periodic symmetric electric field [9,10]. By linking the theoretical calculations with those obtained during the experiment, it will be possible to calculate the necessary radiation protective equipment required for the implementation of the above methods for separating the ytterbium target from 177 Lu.…”