Abstract
The disc column designed by S tephens and M orris [14] for gas absorption studies has been modified for countercurrent liquid-liquid extraction. The effect of liquor rates on the overall mass transfer coefficients and heights of overall transfer units has been studied for the continuous, countercurrent extraction of an aqueous solution of pure uranyl nitrate. The feed solution contained 0·348 lb. UO 2(NO 3) 2 per lb. of solution and the extractants were uranium-free diethylene glycol di-n-butyl ether (dibutyl carbitol) and methyl iso-butyl ketone, initially containing 0·049 lb. UO 2(NO 3) 2 per lb. of solution. The solvent was the “ dispersed ” phase in each case. The data may be correlated, for the range of liquor rates studied, by the equations : ▪
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