PERMEATION BEHAVIOR OF ORGANIC-ACIDS THRO UGH A MEMBRANE WITH ELECTRODIALYSIS

For electrodialysis of lactic and acetic acids, the effect of pH on th e permeation behavior was examined, A strong basic or perfluoro anion exchange membrane was used, Even when the organic acids were undissoci ated, permeation of these acids was observed and the addition of HCl p romoted the permeation rate. The permselectivity of lactic acid over a cetic acid was large at low pH and decreased as the dissociation of ac etic acid proceeded at high pH.