The transport of europium through a porous supported liquid membrane (SLM) containing PC-88A (EHPNA) and Versatic 10 (VA 10) as'immobilised carriers has been carried out. The results demonstrated that transport increases with increasing stirring speed, and reaches a constant value beyond a certain rotation speed. The permeability coefficient increases with the increase in· carrier concentration in a certain range. The dependence of permeabilities on the pH of both the source and receiving

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... ons have been explored. The permeability coefficient has been calculated. by taking into account the mass balance. The effects of compIexing agents such as succinic, malonic and citric acid on permeability coefficient of europium has been investigated. Under similar experimental conditions the effect of complexing agents on permeation of europium has been found as: citric acid > succinic acid> malonic acid. Permeation coefficient of europium has been found greater with PC-88A in comparison with that of Versatic 10. The effect of complexing agents using in receiving phase has been explored. The mechanism of transport of europium in supported liquid membrane has been suggested. The developed methods have been used for the exploration of its utility for synthetic samples. Liquid membranes containing acidic extractants have been studied as a new separation and pre-concentration technique 1-6. However, the continuous and simultaneous extraction and stripping operations are very interesting, attractive and effec-t\,ve because it can remove metal ions from a low concentration with uphill transport to high concentration. Mainly, two types of liquid membranes , viz., emulsion liquid membrane and supported liquid membrane, have been explored by utilising several extractants as mobile carriers for recovery and separation of several metal ions 7-12. In order to consider its practical applications, supported liquid membrane (SLM) consisting of two aqueous phases separated by a solid support could be v~ry useful for the separation and pre-concentration of metal ions from low concentration aqueous solutions, because it reduces the ex-tractant cost and the recovery of metal ion can be achieved in single stage continuous operationI3-15.