APPLICATION OF HOLLOW FIBER SUPPORTED LIQUID MEMBRANE FOR EXTRACTION OF COBALT BY CYANEX 272

Considering the advantages of hollow fiber supported liquid membrane (HFSLM), it has been applied for extraction of Co(II) with a motivation to extract cobalt from various waste resources. Extraction efficiency and transport behavior of Co(II) through HFSLM containing Cyanex 272 diluted in kerosene were investigated. Experiments were performed as a function of aqueous feed solution velocity (1000 mL/min) for both feed and strip, pH of feed solution in the range of 4.00-6.75, the carrier concentration of 25-1000 mol/m(3), and acid concentration in strip solution of 1-500 mol/m(3) on. The mass transfer rate or flux J(Co(II)), which is a function of metal concentration, volume of solution, and membrane area were analyzed. The optimum condition for extraction of Co(II) was pH of 6.00, Cyanex 272 concentration of 500 mol/m(3) and H2SO4 concentration of 100 mol/m(3).