支撐液膜銅萃取研究

Copper Extraction with Supported Liquid Membranes

林春雲(Chung-Yun Lin) ； 台俊傑(Jine-Jye Tai) ； 邱太銘(Tai-Ming Chiu) ； 何英礎(Ying-Chu Hon)

《鑛冶：中國鑛冶工程學會會刊》 30卷4期 (1986/12) Pp. 52-60

https://doi.org/10.30069/MM.198612_30(4).0006

摘要

本報告探討批式支撐液態薄膜（Supported Liquid Membrane，簡稱為SLM），在硫酸系統中進行銅離子分離與濃縮時，其起始質傳通量（initial flux）與各變數之關係。進料溶液之氫離子與銅離子濃度、反萃相銅離子濃度、攪拌速率、有機萃取劑濃度、薄膜使用期限和高分子膜厚度影響等為主要探討之變數。結果顯示銅離子之起始通量與膜中有機萃取劑濃度有關，與反萃相銅離子濃度無關；當進料液銅離子含量和pH分別高於某一定值後，其對起始通量之影響可以忽略；攪拌速率之影響依進料液銅離子濃度而定。LIX－銅錯合物在膜中之擴散亦加以探討。

並列摘要

The initial flux of copper permeation through a porous polyvinylidene fluoride membrane, impregnated with LIX-64N, was measured at ambient temperature as a function of the feed copper concentration, the pH of the aqueous feed solution, the copper concentration in the stripping phase, agitation speed, concentration of the membrane carrier (LIX-64N) and membrane life time. The results indicate that the initial flux of copper depends on the concentration of membrane carrier and is independent of the copper concentration in the stripping phase. The effects of copper concentration in the aqueous feed solution and agitation speed on the initial flux of copper depend on the feed copper concentration. At pH＞3.5, the effect of the pH of the aqueous feed solution on the initial flux of copper could be neglected. Complementary measurements were performed on the diffusion of LIX-copper complex through the porous membrane.