Abstract
Removal of cadmium ion using a hollow fiber module is investigated experimentally, and organic extractant is applied to enhance the removal rate. The roles of pH, flow rates of tube and shell sides, initial concentration of cadmium ion and coexisting metals are investigated to find an optimum operating condition of the module. The experimental outcome indicates that best performance is yielded with pH of 4 and the flow rate of aqueous phase in tube side flow controls mass transfer rate. In addition, the initial concentration of 100ppm gives the best removal. Effect of coexisting component is negligible except Zn and Cu when both of them are present at the same time
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