Abstract
Membrane separation technology is effective for energy saving, space saving, and consecutiveness, and meets the demand of the times. The ion-exchange membrane is a functional membrane and the separation with the membrane has been used for many applications. In this review, established applications of ion-exchange membranes are described first for electrodialysis, sodium chloride electrolysis, electrodeionization, and so on. Further applications of this membrane have been investigated and some of them, mostly for the work of my group, will be noted subsequently. The selective permeation across the membrane is achieved via the specific reaction of the solute
with the ion fixed on the membrane. Amphoteric electrolytes, amino acids, can be also transported selectively by adjusting the pH of the source phase or the receiving phase solution. Some chambers separated with ion-exchange membranes can be used for desalination, electrokinetic remediation, and other novel applications. Ion-exchange membranes have established characteristics and will have further applications.
