Abstract
Internally skinned polysulphone capillary membranes were coated with a viscous chitosan gel and used as an immobilization matrix for polyphenol oxidase. Bench-scale, single-capillary membrane bioreactors then were used to determine the influence of the chitosan coating on product removal after substrate conversion by immobilized polyphenol oxidase during the treatment of industrial phenolic effluents. The results indicate that greater efficiency was achieved in the removal of polyphenol oxidase-generated products by the chitosan membrane coating, as compared with chitosan flakes. This facilitated an increase in the productivity of the immobilized enzyme.
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