SummaryThe performance of fluidized-bed reactors utilizing a magnetic field was determined by the use of magnetite-containing beads of immobilized urease. The reactors showed similar or higher conversions in comparison with fixed-bed reactors, although some aggregation of the beads in the magnetic field was observed. No effusion of the beads occurred up to a flow rate of 24 cm/min.
Rates of glucose oxidation were measured with the use of a fluidized-bed column placed in a magnetic field and magnetite-containing beads of immobilized glucose oxidase and catalase. Its performance was predicted from the volumetric coefficient for liquid-phase mass transfer and the kinetic constants for glucose oxidation. Effusion of beads was negligible under the operating conditions employed.
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