Abstract
A large portion of water is consumed during various textile operations thereby discharging wastewaters with pollutants of huge environmental concern. The treatment of such wastewaters has promising impact in the field of environmental engineering. In this work, Fenton oxidation treatment was engaged to treat simulated textile wastewater. Box–Behnken design and response surface methodology were employed to optimize the efficiency of Fenton process. Iron dose, peroxide dose and pH were considered as input variables while the responses were taken as chemical oxygen demand and color removal. A total of 17 experiments were conducted and analyzed using second-order quadratic model. The quadratic models generated for chemical oxygen demand and color removal efficiencies were validated using analysis of variances, and it was found that the experimental data fitted the second-order model quite effectively. Analysis of variances demonstrated high values of coefficient of determination (R 2) for chemical oxygen demand and color removal efficiencies with values of 0.9904 and 0.9963 showing high conformation of predicted values to the experimental ones. Perturbation plots suggested that the iron dosage produced the maximum effect on both chemical oxygen demand and color removal efficiencies. The optimum parameters were determined as Fe2+ dose—550 mg/L, H2O2 dose—5538 mg/L, pH—3.3 with corresponding chemical oxygen demand and color removal efficiencies of 73.86 and 81.35%. Fenton process was found efficient in treatment of simulated textile wastewater, and optimization using response surface methodology was found satisfactory as well as relevant. From the present study, it can also be concluded that if this method is used as pretreatment integrated with biological treatment, it can lead to eco-friendly solution for treatment of textile wastewaters.
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Acknowledgements
First of all, I would like to thank God, without his blessings my work would not have been completed. I am immensely grateful and thankful to my guide. He not only provided great support for my work, but was also a constant source of inspiration and encouragement. He arranged all the possible support when I was in need of it. I heartily thank him for his guidance throughout my work.
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Sharma, S., Kapoor, S. & Christian, R.A. Effect of Fenton process on treatment of simulated textile wastewater: optimization using response surface methodology. Int. J. Environ. Sci. Technol. 14, 1665–1678 (2017). https://doi.org/10.1007/s13762-017-1253-y
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DOI: https://doi.org/10.1007/s13762-017-1253-y