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A new model for liquid membrane mass transfer is presented.This model takes into account both the solute permeation through the inner core of the emulsion globule and the effect of interfacial resistance enhancement caused by surfactant,thus providing reasonably accurate predictions for the mass transfer process in a liquid membrane system.Another feature of the present model is that the factor of membrane leakage is included in the model descriptions.This suits the model further to the practical conditions of the system. Both experimental results and theoretical analysis show that molecular diffusion through the very thin surfactant layer surrounding the emulsion globule is the rate-controlling step for mass transfer in a liquid sur- factant membrane system.This conclusion will lead to a deeper understanding of the membrane structure and will be helpful for improving liquid membrane systems.
A new model for liquid membrane mass transfer is presented. This model takes into account both the solute permeation through the inner core of the emulsion globule and the effect of interfacial resistance enhancement caused by surfactant, thus providing reasonably accurate predictions for the mass transfer process in a liquid membrane system. Another feature of the present model is that the factor of membrane leakage is included in the model description. This suits the model further to the practical conditions of the system. Both experimental results and theoretical analysis show that molecular diffusion through the very thin surfactant layer surrounding the emulsion globule is the rate-controlling step for mass transfer in a liquid sur- factant membrane system. this conclusion will lead to a deeper understanding of the membrane structure and will be helpful for improving liquid membrane systems.