Effect of kinetic synergist on transport of copper(II) through a liquid membrane containing P-507 in kerosene

A new kinetic synergism system for copper(II) transport through a bulk liqu id membrane containing mono(2-ethyhexyl)-2-ethyhexyl phosphate and Manoxol OT (OT) was examined. The influence of stripping agent, anion, pH in feed p hase, and carrier concentration were investigated. The kinetics of Cu(II) t ransport could be analyzed in the formalism of two consecutive irreversible first-order reactions, considering both extraction and stripping. The pseu do-first-order apparent rate constants of interfacial reactions in membrane transport are determined by altering the temperature. The activation energ y values are 38.1 kJ mol(-1) for extraction and 32.8 kJ mol(-1) for strippi ng. The experiments demonstrated that Manoxol OT is a good kinetic synergis t for Cu(II) transport through liquid membranes in this study. The kinetic synergism of OT for extraction of Cu2+ ions is analyzed.