Novel swirl-flow reactor for kinetic studies of semiconductor photocatalysis
- Univ. of Groningen (Netherlands). Dept. of Chemical Engineering
Heterogeneous photocatalysis has received considerable attention in years as an alternative for treating water polluted with hazardous organic chemicals. A new two-phase swirl-flow monolithic-type reactor was designed to study the kinetics of heterogeneous photocatalytic processes on immobilized semiconductor catalysts. True kinetic rate constants for destruction of a textile dye were measured as a function of wavelength of light intensity and angle of incidence, catalyst layer thickness, and the effect of absorption of light by liquid film on the overall rate of photocatalytic degradation. Photocatalytic activities of two commercially available TiO{sub 2} catalysts (Degussa P25 and Hombikat UV 100) were also compared for different light intensities and catalyst layer thickness. Residence time distribution and mass-transfer limitations were evaluated. This new reactor appears to be an attractive choice for kinetic studies of heterogeneous photocatalysis.
- OSTI ID:
- 556744
- Journal Information:
- AIChE Journal, Vol. 43, Issue 10; Other Information: PBD: Oct 1997
- Country of Publication:
- United States
- Language:
- English
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