Cellulose Acetate - RO Membranes

Advanced Reverse Osmosis Technology

Cellulose Acetate Membranes - An asymmetric polymer used in the construction of membrane elements (others are polyamide and polysulfone). Originally cellulose acetate membranes were made of cellulose diacetate, cellulose triacetate or a blend. CA membranes need a residual of chlorine to protect them from biological attack. CA membranes have tight pH operating requirements.

CA membranes are considered uncharged because their functional groups are not polar (PA and polysulfone are). Because they are non-polar they do not attract foulants to the surfaces as easily. Less fouling is observed also due to a smother surface of a CA membrane. CA membranes are easily degraded by bio-fouling.

For further information or assistance please contact Reverse Osmosis Chemicals International on +44 (0) 161 877 2334 or e-mail info@rochemicals.com.