Separation of water-acetic acid mixture through a membrane was carried out. Membranes obtained from poly (acrylic acid-co-acrylonitrile) and poly (acrylic acid-co-styrene) were effective for a selective separation of water from aqueous acetic acid solution by means of pervaporation method. Permeation of water and acetic acid through membranes from poly (acrylic acid-co-acrylonitrile) was interpreted by a carrier mechanism, in which carboxylic acid moiety in the membrane played a role as a fixed carrier for both permeates. Water was permeated through poly (acrylic acid-co-styrene) membranes by TYPE II mechanism, in other words, an all or nothing mechansim, while acetic acid was permeated without having any specific interaction with the membrane.
No takes yet. Share an insight, caveat, or question.
Yoshikawa et al. (1985) studied this question.