Cellulose Acetate Membranes - Cellulose acetate reverse osmosis membranes comprise an asymmetric polymer commonly used in the construction of RO membrane elements (other membrane materials include polyamide and polysulfone). Originally cellulose acetate membranes were made of cellulose diacetate, cellulose triacetate or a blend of these materials. Cellulose acetate membranes need a residual of chlorine to protect them from biological attack. They also have tight pH operating requirements.

Cellulose acetate membranes are considered uncharged because their functional groups are not polar (polyamide and polysulfone are). Because cellulose acetate membranes 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 cellulose acetate membrane. Cellulose acetate membranes are easily degraded by bio-fouling.

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Reverse Osmosis Chemicals International work closely with a diverse range of global organisations, intelligently combining advanced treatment technologies with practical solutions to resolve complex issues. If you have a project you would like to discuss, or you require technical support and assistance; or if you simply have a question about our reverse osmosis technology solutions please contact one of our specialist advisors using our Technical Support page or call us on +44 (0) 330 223 31 31.