Kinetic study of fructose-glucose isomerization in a recirculation reactor |
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Authors: | F Camacho-Rubio E Jurado-Alameda P Gonzlez-Tello G Luzn-Gonzlez |
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Affiliation: | F. Camacho-Rubio,E. Jurado-Alameda,P. González-Tello,G. Luzón-González |
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Abstract: | We have studied the equilibrium and kinetics of fructose-to-glucose isomerization using a commercial immobilized glucose isomerase, Sweetzyme T® (from NOVO), in a packed-bed recirculation reactor which enabled us to eliminate the influence of external-mass transfer and which could function as a differential reactor when a sufficient flow rate was used. The results obtained have also been corrected with regard to the influence of internal transport in the immobilized enzyme particles. Isomerization kinetics is a pseudo first-order reversible reaction in the ranges studied: 303–333 K, pH 7.5 and 0.5 to 2.0 mol/L hexose concentrations. We compare our results with those found in the literature, and propose equations for the influence of temperature on the equilibrium and on the kinetic constants. |
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Keywords: | recirculation reactor fructose glucose isomerization equilibrium |
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