Photocatalytic Decomposition of Organic Dyes


Photocatalytic Decomposition of Organic Dyes

Zubera Naseem, Haq Nawaz Bhatti, Munawar Iqbal

Effluent detoxification and degradation kinetic of Acid Yellow 216 were investigated using Fenton and photo-Fenton processes. pH, contact time, Fe+2 concentration, H2O2 concentration, dye initial concentration, and temperature were optimized. The decolorization (87%) was considerably higher under experimental conditions of 20 min irradiation, pH 3, 50 mg/L initial dye concentration, 1.5 mM Fe+2, 5 mM H2O2 and 40ºC temperature. However, in the photo-Fenton process dye degradation was achieved up to 98%. Among, first-order, second-order and Behnajady–Modirshahla–Ghanbery (BMG) kinetic models, BMG kinetic model fitted well to experimental data. Under optimized conditions, up to 83 and 94% degradation of textile effluents were achieved using Fenton and Photo-Fenton process along with 56 and 76% COD reduction, respectively.

Fenton oxidation, Acid Yellow, Effluents, Dyes, Photo-Fenton, Textile effluents, Kinetics model, Detoxification

Published online 4/1/2018, 25 pages


Part of Organic Pollutants in Wastewater I

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