1986•OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)Requires access
Ion-exchange separation of scandium from thorium
Yu.P. Kudryavskii, A.V. Belkin, E.I. Kazantsev, V.N. Onosov, A.L. Zonov
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Abstract
The influence of various factors on separation of thorium from scandium was investigated with the aid of a fractional factorial experiment. The most important characteristics of separation of thorium and scandium are the dynamic exchange capacity of the cation-exchanger for thorium (Y/sub 1/(DEC, meq Th/sup 4 +//g)) and the amount of scandium entering the effluent before breakthrough of thorium (Y/sub 2/ (%)), and the authors therefore adopted these characteristics as the response functions. The variable factors studied were X/sub 1/, the pH of the solution of thorium and scandium chlorides (2.7-3.3); X/sub 2/, the thorium concentration (6.4-14.0 g/liter); X/sub 3/, the flow rate of the solution through the column (0.2-0.8 ml/(min x cm/sup 2/)); X/sub 4/, the ratio of the height of the resin bed to the column diameter (4-10), generating the relation X/sub 4/ = X/sub 1/ x X/sub 2/ x X/sub 3/.