TOAを担体とする乳化型液体膜によるクロムの初期抽出速度

概要

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Chromium ion was extracted from acidic solution by a surfactant membrane composed of carrier of trioctylamine (R3N), oily solvents of n-heptane and Span 80, surfactant. Effects of each concentration, C [kmol/m3], on the initial extraction rate, J°cr [kmol/ (m2s)], were expressed as follows : J°cr=2.8 (CH) 1.0 (Ccr) 1.1 (CR3N) 1.0 The powers of each concentration agreed well with the powers estimated from the rate-determining step in the reaction sequence. The known rate, (J°cr) f measured for the liquid-liquid flat interface in a stirred vessel was not consistent with the above rate. Therefore, (J°cr) f was inapplicable to this liquid membrane separation.
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