移動キャリャ-としてのヒドロキシオキシムを含む中空糸支持型液体膜を透過する銅の速度論的研究

概要

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The process of copper permeation through hollow fiber type liquid membrane impregnated with β-hydroxybenzophemone oxime (LIX65N) has been studied. Porous support hollow fibers were made of two materials, such as polyacrylonitrile and polypropylene. LIX65N was diluted in kerosene by 10vol%. Concentration of copper and pH in feed solution are in the range of 10-2-88mol/m3 and 7.94×10-4-1.58×10-2mol/m3 respectively. Rate determining step in the copper permeation is found interfacial reaction between copper in the feed solution and free LIX65N in the liquid membrane of which concentration is expressed [HR]. The flux maximum of Cu2+ through membrane which is observed at the initial stage of permeation experiment 15-24 hours is proportional to the 2nd order of [HR] when the range of [HR] is 8×10-3-1mol/m3 and the range of copper concentrations is 10-2-88mol/m3. The order of reaction and reaction rate constant do not depend on material of porous support hollow fiber membrane. This phenomenon is different from that observed after 5days with membrane with 20vol% of LIX65N.
日本膜学会の論文