Mosaic ion exchange membranes

Ion-exchange membranes are classified according their function as follows cation exchange membrane, anion exchange membrane, amphoteric ion exchange membrane, bipolar ion exchange membrane, and mosaic ion exchange membrane. 

Figure 6.33 Separation between potassium chloride and glucose using a mosaic ion exchange membrane. Am Permeated amount (X) KCl ( ) glucose.

Figure 6.36 Piezodialysis of a potassium chloride solution using a mosaic ion exchange membrane (membrane thickness about 200 A, ion exchange capacity of cation and anion exchange parts are almost the same). Salt enrichment Es = [(CujCi) — 1] X 100 (C, concentration of feed solution Cu concentration of permeate). ( ) Membrane prepared by casting dioxane solution of the polymer. ( ) Membrane prepared by casting benzene solution of the polymer. (A) Membrane prepared by casting cyclohexane solution of the polymer.

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