Photocatalytic degradation of Patent Blue V dye using Iron (Fe) supported titanium dioxide
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Abstract
Effluents from the food industry contaminated with Patent Blue V dye require treatment before being discharged into the environment, as this dye may pose a threat to both the environment and living organisms. This research investigates the removal of Patent Blue V using photocatalysis, specifically with iron-based catalysts supported on titanium dioxide (TiO2). Electrostatic adsorption of Patent Blue V dye solution on TiO2 was conducted and the results showed that only 10% of dye was adsorbed on TiO2. In this work, the catalysts were prepared by dry impregnation and activated under UV light for 2 hours prior to conducting the dye degradation tests. Four samples were tested: 4%Fe(OH)3/TiO2, 4%Fe2O3/TiO2, 4%Fe/TiO2, and TiO2 at a dye concentration of 1.201×10-5 M, pH 4.40, 25๐C, and a catalyst dosage of 3 g/L in 160 cm³ of dye solution. The results showed that the 4%Fe (OH)3/TiO2 catalyst exhibited the highest efficiency in dye removal, achieving 75% degradation of the initial concentration within 10 minutes. Kinetic analysis revealed that dye concentration influences the reaction rate, and rate law analysis using the initial rate method yielded a linear graph with a reaction order of 1.0 and a rate constant of 0.0473 min-1.
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