Simultaneous mass transfer of acid and ions in a liquid anion exchanger

Abstract

To clarify the mechanism of simultaneous mass transfer of acid and ions with a liquid anion exchanger, the rate of extraction of acid and the transfer rates of each amine salt were measured in a stirred cell with a flat liquid-liquid interface. When the aqueous phase contained 0.5 wt.% of a surface-active agent, the transfer rates of each amine salt were found to be approximately predicted by the theoretical equations derived here. However, when the surface-active agent was absent, the experimental values of transfer rate became larger than the theoretical ones for systems in which the extraction of acid and ion exchange between different ions take place simultaneously at the interface. The occurrence of interfacial turbulence was also observed.