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Lookup NU author(s): Professor Galip Akay,
Dr Elif Erhan,
Dr Bulent Keskinler
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A cross-flow enzyme-immobilized membrane reactor was used to investigate the removal of phenol and catechol from water. A strain coded as AEK-1, identified as a species of Pseudomonas syringae was used to obtain the crude enzyme extract. Crude enzyme extract was chemically immobilized onto a flat polyamide membrane with nominal pore size of 0.2 μm. The degradation process was carried out in a cross-flow filtration module. The highest phenol-degradation rate was 1.3 μg/cm2 s when the initial concentration of phenol was 500 μg/ml at the flux rate of 4.60 × 10-3 ml/cm2 s. Apparent reaction rate increased with increasing flux rate. Damköhler number, Da, was calculated to be 380. The external effectiveness factor, η, was found to be ca. 0.01. The results obtained from enzyme-immobilized membrane reactor showed that the reaction rate was diffusion controlled. © 2002 Elsevier Science B.V. All rights reserved.
Author(s): Akay G, Erhan E, Keskinler B, Algur OF
Publication type: Article
Publication status: Published
Journal: Journal of Membrane Science
ISSN (print): 0376-7388
ISSN (electronic): 1873-3123
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