Calcium ionophore I as very effective extraction agent for trivalent europium and americium

The solvent extraction of microamounts of Eu3+ and Am3+ from water into nitrobenzene by means of a mixture of hydrogen dicarbollylcobaltate (H+B-) and calcium ionophore I (marked as the ligand L) was investigated. The equilibrium data have been explained assuming that the species HL+, HL2 +,ML2 3+ and ML3 3+ (M3+: Eu3+ or Am3+) are extracted into the organic phase. The extraction and stability constants of the cationic complex species in nitrobenzene saturated with water have been determined and discussed. It was proven experimentally that the ligand L could be considered as a very strong receptor for Eu3+ and Am3+.

Solvent extraction of trivalent europium and americium into nitrobenzene by using hydrogen dicarbollylcobaltate and tetraisopropyl[oxybis(2,1-ethanediyliminocarbonyl)]-bisphosphoramidate

Solvent extraction of micro-amounts of Eu3+ and Am3+ from water into nitrobenzene by means of a mixture of hydrogen dicarbollylcobaltate (H+B-) and tetraisopropyl[oxybis(2,1-ethanediyliminocarbonyl)]-bisphosphoramidate (L) was studied. The equilibrium data were explained assuming that the species HL+, ML2 3+ and ML3 3+ (M3+ = Eu3+ or Am3+) are extracted into the organic phase. Extraction and stability constants of the cationic complex species in nitrobenzene saturated with water were determined and discussed. From the experimental results, it is obvious that this effective ligand L for the Eu3+ and Am3+ could be considered as a potential extraction agent for nuclear waste treatment.

Effects of synthesis conditions on ion exchange properties of α-zirconium phosphate for Eu and Am

Three zirconium phosphate products A, B and C, made through different synthesis routes, were investigated for their europium and americium ion exchange properties utilizing radiotracers