ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Adsorption of uranyl ions on EDTA-forms of anion-exchangers

D. I. Eristavi, F. I. Brouček, and L. A. Berishvili

Gruz. Politekh. Inst. im. Lenina, Tbilisi, USSR.

Abstract: The sorption of uranyl ions on the EDTA-forms of anion exchangers in solutions at pH 3 was confirmed by X-ray analysis. On the basis of infrared spectra, the probable schemes were proposed for the formation of EDTA uranyl complexes in the phase of EDTA anion exchangers at pH 3 which corresponded to formulas [U0₂(H₂Y)₂]^2- and [U0₂Y]^2-. The values of dynamic sorption capacities of EDTA-forms of anion exchangers AN-2Fg, AV-16 and AV-17 were determined for uranium over the concentration range of 0.014 — 0.114 mgequiv ml^-1 by the method involving the construction of output curves of sorption under various hydro-dynamic conditions. Besides, the optimum hydrodynamic conditions for the work of sorption columns were found out. The optimum value of specific filtration load was 16.66 h^-1 for a 9 cm layer of ion exchanger. The investigated anion exchangers may be ranged according to their perspective utilization in analytical chemistry of uranium as follows: AN-2Fg < AV-17 < AV-16.

Full paper in Portable Document Format: 2310a759.pdf (in Russian)

Chemical Papers 23 (10) 759–764 (1969)