Kinetics of americium and europium extraction by tert-butylthiacalix[4]arene from alkaline media

Continuous Extraction of Europium(III) by Ionic Liquid in the Rotating Disk Column with an Asymmetrical Structure Aimed at the Evaluation of Reactive Mass Transfer

“…It is acknowledged that solvent extraction is a significant part of the process . Due to the importance of solvent extraction in separating europium and its similar ions, numerous studies in the literature have been conducted to investigate the effect of different solvents on the removal of this element. − Studies by Tunsu and co-workers showed that the separation of yttrium and europium ions could be provided by Cyanex572. The increase in temperature has adverse effects on the separation process, and the high hydrochloric acid concentration (>3 mol/L) is required for the stripping and recovery of these elements.…”

Separation of terbium as a first step towards high purity terbium-161 for medical applications

“…Although there are many examples on rare earth separation, [24][25][26][27][28][29][30] there are only a few examples of separation processes in general using carbonate medium. These examples consist of extraction of lanthanides and transplutonium elements from alkaline and carbonate media can be achieved mainly via liquid-liquid extraction, [31][32][33][34][35][36] using various extractants such as quaternary ammonium salts, [37][38][39] primary amines 40 or alkylpyrocatechols. 41 There are also just a few examples of using extraction chromatography in carbonate media.…”

First 24-Membered Macrocyclic 1,10-Phenanthroline-2,9-Diamides—An Efficient Switch from Acidic to Alkaline Extraction of f-Elements

“…For example, crown esters are key compounds for the selective separation of strontium-90 and caesium-137 [7,8]. Calix[n]arenes are actively being investigated as extractants for the isolation of An(III) and Cs(I) from alkaline solutions of high-level nuclear waste (HLW), which is one of the problems of nuclear heritage in Russia (Federal State Unitary Enterprise "Mayak Production Association", Ozersk) and in the USA (Hanford, Savannah River and Oak Ridge) [9][10][11][12]. Pillar [5]arenes [13] and modified calix [4]arenes are being investigated to isolate alpha-emitting long-lived radionuclides from spent nuclear fuel (SNF) reprocessing solutions [14,15].…”