液膜による分離法とその応用

概要

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Separation technique using liquid membranes has been noted as a novel method for an increasingly wide variety of separations including the separation and concentration of various solutes such as gases, hydrocarbons, metal ions, acids and bases. By incorporating carriers into liquid membranes, solutes can be pumped against their concentration gradients, and very high concenrartion ratio and selectivity are obtained. Of various types of liquid membranes, emlusion liquid membranes and supported liquid membranes are promising for commercial use. Recently, the emulsion liquid membrane was commercialized for the recovery and reuse of Zn (II). This is the first application of uphill transport to a large scale separation process. In this article, recent developments in the liquid membrane tehnique are reviewed with an emphasis on the researches which were performed from the practical point of view. New types of liquid membranes and other application of liquid membranes such as encupsulation of enzymes by W/O-type emulsions are also described.
日本膜学会の論文