酢酸フタル酸セルロース-ポリエチレンオキシド複合体膜による有機物水溶液の逆浸透除去

概要

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Cellulose acetate phthalate forms homogeneous blend with water-soluble polyethylene oxide. Reverse osmosis properties of membrane prepared from this blend was investigated using aqueous organic solution. This membrane is highly permeable to the hydrophilic solute, but impermeable to hydrophobic one. Regular solution theory was applied to the rejection of organic solute, assuming that it is primarily determined by the distribution of solute between the membrane and the aqueous solution. It indicates that this treatment can serve a basis for predicting solute rejection in reverse osmosis, if the membrane parameters are estimated reasonably.