Development of a solvometallurgical process for the separation of yttrium and europium by Cyanex 923 from ethylene glycol solutions

Non-aqueous solvent extraction of indium from an ethylene glycol feed solution by the ionic liquid Cyphos IL 101: speciation study and continuous counter-current process in mixer–settlers

“…To further suppress the loss of indium(III) and to increase the scrubbing efficiency of zinc(II), the principle of the crowding effect of the less polar phase was exploited by adding indium(III), 5 g L À1 , to the scrubbing solution. 38 A McCabe-Thiele plot was constructed to estimate the number of theoretical stages required for quantitative scrubbing of zinc(II) at a selected MP : LP phase ratio (Fig. 13).…”

“…This observations can be explored for the development of more efficient solvent extraction processes, as illustrated in recent papers. [38][39][40][41][42] In this paper, an efficient non-aqueous solvent extraction process for separation of indium and zinc from an ethylene glycol (EG) feed solution is described. The quaternary phosphonium ionic liquid trihexyl(tetradecyl)phosphonium chloride (Cyphos IL 101) and the quaternary ammonium ionic liquid Aliquat 336 (a mixture of tri-n-octylmethyl and tri-ndecylmethylammonium chloride with the former dominating) are used as extractants due to their commercial availability.…”

Ethylammonium nitrate enhances the extraction of transition metal nitrates by tri‐n‐butyl phosphate (TBP)

“…9 Recently, a series of non-aqueous SX systems have been investigated and several enhanced separations have been obtained. [10][11][12][13][14][15] The substitution of water by polar organic solvents changes the solvation of metal cations in the polar solvent, and the relative solubility of the complexes between the two immiscible phases also affects the extraction equilibrium. 15 The extraction of metals from polar organic solvents can be significantly altered by changing polar solvents.…”

“…The use of polar solvents instead of water in the extraction of metals is called non‐aqueous solvent extraction (NASX) 9 . Recently, a series of non‐aqueous SX systems have been investigated and several enhanced separations have been obtained 10‐15 . The substitution of water by polar organic solvents changes the solvation of metal cations in the polar solvent, and the relative solubility of the complexes between the two immiscible phases also affects the extraction equilibrium 15 .…”

Sorption of rare earth coordination compounds

“…Likewise, for extraction of such metals as thorium (IV) and uranium (IV) in the study [17] Problem statement. Analysis of literature references allows to come to a conclusion that REM recovery from multisalt systems [11] is a relevant topic due to the complex character of REM sources. Values of obtained thermodynamic characteristics of the sorption process, namely of ion exchange, define not only conditions of running the process but also technological parameters of ion exchangers for REE separation and removal of associated components.…”