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.
Keywords
Fenton oxidation, Acid Yellow, Effluents, Dyes, Photo-Fenton, Textile effluents, Kinetics model, Detoxification
Published online 4/1/2018, 25 pages
DOI: http://dx.doi.org/10.21741/9781945291630-2
Part of Organic Pollutants in Wastewater I
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