Photocatalytic oxidation of methyl orange in a three-phase fluidized bed reactor

The photocatalytic oxidation of methyl orange under weak illumination conditions was carried out in two different types of fluidized bed reactors. TiO 2 powder was employed as the photocatalysts and a 15 W low pressure mercury lamp was used as the light source and the reactor volume was 2.5 l. The p...

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Veröffentlicht in:	Chemosphere (Oxford) 2002-06, Vol.47 (9), p.1019-1024
Hauptverfasser:	Nam, Wooseok, Kim, Jimin, Han, Guiyoung
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Azo Compounds - chemistry Catalysis Coloring Agents - chemistry Decolorization Exact sciences and technology Fluidized bed Indicators and Reagents - chemistry Industrial wastewaters Methyl orange Oxidation-Reduction Photocatalytic reaction Photochemistry Pollution Titanium - chemistry Wastewaters Water Purification - methods Water treatment and pollution
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Zusammenfassung:	The photocatalytic oxidation of methyl orange under weak illumination conditions was carried out in two different types of fluidized bed reactors. TiO 2 powder was employed as the photocatalysts and a 15 W low pressure mercury lamp was used as the light source and the reactor volume was 2.5 l. The parametric study of photocatalytic oxidation of methyl orange in two different types of fluidized beds was investigated; effect of catalyst loadings, pH, air flow rate, initial concentration and oxygen concentration on the oxidation reaction rate. The experimental results were analyzed in conjunction with the characteristics of fluidized bed and the reactor geometry effect on the reaction rate was analyzed.
ISSN:	0045-6535 1879-1298
DOI:	10.1016/S0045-6535(01)00327-7