Parametric and Kinetic Studies on the Photocatalytic Decolorization of Aqueous Congo Red Solution using Aluminum Plate-Immobilized TiO₂-Bagasse Fly-ash Mixture

Author : San Agustin, Diadem Nito
Major Adviser : Arocena, Rhebner E.
Committee Members : Movillon, Jovita L.; Nisola, Vic Jayson M.
Year : 2019
Month : June
Type : Thesis
Degree: BS
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Abstract

Textile industry is one of the major contributors of industrial wastewater in the Philippines and wastewater treatment is a major solution to this problem. One possible solution on wastewater treatment is the advance oxidation process. This study determined the effects of the main parameters which were initial dye concentration, catalyst loading and BFA/TiO₂ ratio on the photocatalytic decolorization of aqueous congo red solution using aluminum plate-immobilized TiO₂-BFA mixture. The high and low values for the parameters were 3 and 1 for the BFA/TiO₂ ratio, 3 and 1 plate/s for the catalyst loading and 100 and 300 ppm for the initial dye concentration. The highest average color removal per gram catalyst was 1.5495 mg per gram catalyst. The best combination of parameters was 300ppm initial dye concentration, 1 plate for catalyst loading and 3:1 BFA/TiO₂ ratio. A two-level factorial design was used and the parameters The factors that have shown direct significant effects on the color removal are BFA/TiO₂ ratio, dye concentration and the interaction between BFA/TiO₂ ratio and dye concentration with low value catalyst loading while the interaction between BFA/TiO₂ ratio and dye concentration with high value catalyst loading has shown inverse significant effect on the color removal. The best combination of parameters was used to determine the order of reaction (n) and rate constant (k) and was found to be 1st order and 0.0002 per minute

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