PERVAPORATION INDUCED BY ELECTRIC-CURRENT

A new class of membrane processes with active, energy depending separa tion of neutral vapor and gaseous components through ion-exchange memb ranes and extraction into the vapor-gas medium are discussed. For real ization of these processes the electric potential gradient in the memb rane is maintained and controlled externally by electric current techn iques. Model equations for the removing component flux for this case a re obtained. The process is realized for ammonium sulphate decompositi on with removing ammonia to the vapor phase through perfluorinated cat ion exchange membrane. The condition for such an active transport is t hat a target neutral component (ammonia) is capable of entering into t he composition of the counterion solvate shell to execute an efficient transfer via the mutual exchange of the counterions located near the adjacent ion-exchange groups.