Croatica Chemica Acta, Vol. 36 No. 2, 1964.
Original scientific paper
Solvent Extraction and Separation of Europium(llI) and Terbium(Ill) from Uranium(Vl) by Monooctyl anilinobenzylphosphonate
M. J. Herak
; Institute »Ruder Boskovic«, Zagreb, Croatia, Yugoslavia
V. Jagodić
; Institute »Ruder Boskovic«, Zagreb, Croatia, Yugoslavia
Abstract
The solvent extraction behaviour of Eu(III) and Tb(III)
between aqueous solutions and a ligroin solution of monooctyl
a-anilinobenzylphosphonate has been investigated. The distribution
studies were carried out using the radionuclides 1s2Eu and 160Tb
as tracers. Uranium was d etermined spectrophotometrically.
The effect of varying the concentration of extractant in the
or":anic phase and of varying the hydrogen ion concentration of
the aqueous phase has been studied. Chloride, perchlorate,
nitrate, and sulphate s olutions were employed as aqueous phases.
The metal-ligand ratios of the extractable Eu(III) and Tb(III)
complexes have been determined from log-log plots of the partition
coefficients vs. the concentrations of extractant in the organic
phase and hydrogen ion concentration in the aqueous phase.
Conditions for the separation of Eu(III) and Tb(III) from U(VI)
ai:;e given together with the separation coefficients which were
found to range from 103 to 104,. The possibility of back-extracting
the extracted uranium is discussed.
Keywords
Hrčak ID:
208308
URI
Publication date:
30.9.1964.
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