Extraction of cesium with derivatives of carborane into nitrobenzene

Adsorption of Dicarbollylcobaltate(III) Anion {(π-(3)-1,2-B9C2H11)2Co(III)−} at the Water/1,2-Dichloroethane Interface. Influence of Counterions' Nature

“…[10] During the calculations, the sum of the dicarborbollylcobaltate anions' concentrations in the adjacent layer of the organic phase was considered equal to the total volume (C 0 ). The concentration of magnesium ions in the adjacent layer in the aqueous phase, unlike the concentration of cesium ions, was taken to be constant and equal to the bulk one (0.1 M).…”

“…A high radiating and chemical stability of dicarbollides and their halogen derivatives permits us to apply them successfully in the process of cesium and strontium isolation from the products of nuclear fission by liquid extraction (9,10). The structure of the polyhedral sandwich dicarbollylcobaltate(III) anions {(π-(3)-1,2-B 9 C 2 H 11 ) 2 Co(III) − } (henceforth referred to as B − ) is presented in Fig.…”

Treatment of Spent Nuclear Fuel for Separation, Immobilization and Disposal of Heat Generating High Level Fission Products, Caesium and Strontium

“…Moreover, FPEX is not industrially used like UNEX and requires more testing. Radiation and chemical stability of CCD and PEG is also very good [23] .Phenyl-polyfluoro-alkylsulfones diluents used in the UNEX process are chemically harmless, have excellent radiation stability and surpass typical PUREX solvent explosion and fire safety indices [21,19,16] . After separation of caesium and strontium along with the actinides using the most suitable method, the waste must be properly immobilized before disposal.…”

Cesium and Strontium Separation Technologies Literature Review

“…The Czech researchers determined that strontium could also be extracted with the cesium by adding polyethylene glycol (PEG) to the cobalt dicarbollide dissolved in nitrobenzene [38]. Chlorinated cobalt dicarbollide (CCD) and PEG have good chemical and radiation stability [39]. The Czech scientists later worked with Russian researchers at the Khlopin Radium Institute (KRI) to develop the combined Cs/Sr extraction process for large-scale applications [40].…”