Liquid membrane extraction of 2-chlorophenol from aqueous solution

Experiments on liquid membrane extraction of 2-chlorophenol were conducted to examine the extraction efficiencies under various operating conditions. Emphasis was placed on identifying the optimal conditions of operating variables in the extraction process and in the demulsification of exhausted water-in-oil (W/O) emulsion. Also considered was multi-stage process in lieu of single-stage operation for efficiency enhancement. An operating model was established for the former by coupling the material balance equations with extraction equilibrium correlation. Experiments were performed to verify the formulated model and to prove the advantages of the multi-stage process. (C) 1999 Published by Elsevier Science B.V. All rights reserved.