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

摘要

A new kinetic synergism system for copper(II) transport through a bulk liquid membrane containing mono(2-ethylhexyl)-2-ethyhexyl phosphate and Manoxol OT(OT) was examined.The infuence of stripping agent,an-ion ,pH in feed phase,and caarier concentration were investigated.The kinetics of Cu(II) transport could be analyzed in the formalism of two cosecutive irreversible fisrt-order reactions,considering both extraction and stripping.The pseudo-fisrst-order apparent rate constants of interfacial reactionsin membrane transport are determine dby altering the temperature.The activation energy values are 38.1 kJ mol~(-1) for extraction and 32.8 kJ mol~(-1) for stripping.The experiments demonstrated that Manoxol OT is a good kinetic synergist for Cu(II) transport through liquid membranes in this study.The kinetic synergism of OT for extraction of Cu~(2+) ions is analyzed.