Liquid Emulsion Membranes and Their Applications in Biochemical Processing

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Abstract
The potential for liquid emulsion membrane (LEM) systems in biochemical applications and their advantages over conventional systems are discussed. Examples are cited where LEMs have been used to successfully separate organic acids, amino acids, and antibiotics. The use of LEMs to immobilize cells and enzymes to synthesize antibiotics and amino acids as well as decontaminate biological waste streams is described. Enzyme systems immobilized in LEMs are quantitatively evaluated via traditional engineering approaches. In light of the above analysis, the potential LEM process difficulties of membrane breakage, swell, and selectively are examined. New biological applications for LEMs are suggested.