PREPARATION OF MEMBRANE-IMMOBILIZED ENZYMES FOR PHENOL DECOMPOSITION

A method for the preparation of membranes with immobilised enzymes for the biological degradation of phenols is described. In the first stag e, an enzymatic fraction from bacterial strains has been isolated. The enzyme membranes were obtained by ultrafiltration of protein solution through a membrane support made of non-cellulose polymers. All enzyme s were adsorbed onto the membrane surface. The enzyme membranes were f ound to degrade 70-80% of the phenol during single dead-end ultrafiltr ation at a pressure of 1 x 10(5)-3 x 10(5) Pa. The retention coefficie nt of the ultrafiltration process also amounted to 70-80%.