Croatica Chemica Acta, Vol. 60 No. 4, 1987.
Short communication, Note
The Exchange of Tritiated Water Between Zn-A Zeolitevand the Surrounding Water
Z. Radak Jovanović
; The Boris Kidrič Institute of Nulear Sciences, Vinča - Beograd
M. Todorović
; The Boris Kidrič Institute of Nulear Sciences, Vinča - Beograd
I. J. Gal
; Institute of Chemistry, Faculty of Science, University of Beograd Beograd, Yugoslavia
Abstract
Zeolites are considered as adsorbents for tritiated waste water.
The sorption capacity of 4A zeolite is increased, and the speed
of tritium release, as THO, decreased if sodium ions in 4A zeolite
are replaced with small divalent cations. The exchange kinetics
THO/H20 between Zn-A zeolite containing tritiated water and the surrounding water was investigated at 30-60 De, using zinc-exchanged 4A zeolite beads of 0.8 and 1.6 mm radius. The kinetics was controlled by the diffusion of water in the solid particle and interpreted in terrns of the Boyd - Reichenberg diffusion model. Effective self-diffusion coefficients of water in the zeolite beads were obtained and the kinetic data are discussed from the point of view of using zeolites as sorbents and storage material for tritiated waste water.
Keywords
Hrčak ID:
176392
URI
Publication date:
23.12.1987.
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