Journal ArticleDOI
On the Distribution of Isotopes in a Separation Column in Countercurrent Electromigration of Molten Binary Mixtures
Isao Okada,Arnold Lundén +1 more
TLDR
In this paper, it is verified that the existing formulation for the calculation of the elementary separation factor holds independent of whether there is such an anomaly in the isotope distribution for the less mobile cation.Abstract:
Abstract In countercurrent electromigration of molten binary mixtures with a common anion in which each cation is composed of two isotopes, the less mobile cation is enriched toward the anode, and, at the same time, the isotopes of this cation become distributed in a complicated way. Thus, the zone next to the anode where the heavy isotope is enriched is immediately followed by a region where a slight enrichment of the light isotope occurs, while for the more mobile cation the heavy isotope is enriched in both these regions. This phenomenon has been observed in experiments with the systems (Li-K)NO3 and (Li-K)Cl and it has also been reproduced by analyzing the flow equations for the constituent components numerically with a computer. It is verified that the existing formulation for the calculation of the elementary separation factor holds independent of whether there is such an anomaly in the isotope distribution for the less mobile cation.read more
Citations
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Journal ArticleDOI
Highly selective separation of singly charged cations by countercurrent electromigration with a track-etched membrane
TL;DR: In this article, a hybrid electro-baromembrane process applied to separate monovalent cations is presented, where an electric field and a pressure field are simultaneously applied to a track-etched membrane with an effective pore diameter of 28nm.
Journal ArticleDOI
Continuous recovery of concentrated solute from the melt by countercurrent electromigration
TL;DR: In this article, an original countercurrent electromigration cell was designed to recover concentrated solute in the column from the melt, which could be effectively used to separate multivalent cations from monovalent cations under the conditions of high current density.
Journal ArticleDOI
Consecutive recovery of rare earth and alkaline earth elements by countercurrent electromigration in room temperature molten salts
TL;DR: In this paper, the authors proposed an environmental harmonization process applying the countercurrent electromigration technique utilizing the room temperature molten salts substituted for the pyrometallurgical processes aiming at the recovery of the rare earth and the alkaline-earth elements in spent catalysts.
Journal ArticleDOI
Enrichment of rare earth and alkaline earth elements by countercurrent electromigration in room temperature molten salts
TL;DR: In this article, a countercurrent electromigration method using ammonium imide type room temperature molten salts has been performed as an efficient enrichment process for rare earth and alkaline-earth elements.