Optimization of triple dye mixture removal by oxidation with Fenton


Azo dyes are widely used in textile industry due to their easy production, high stability during washing and variety of colors. It raises concern over the ecosystem because of its structural features. Some advanced oxidation process that is tertiary treatment is one of the conventional treatment methods. Pollutants that cannot be removed by primary and secondary treatment are treated by tertiary treatment methods. Primary and secondary treatment methods are not generally sufficient for removal of azo dyes. For this reason, it has an important place in its treatment with advanced oxidation processes. The aim of this study is to investigate the effect of different parameters on color and COD removal yields of triple dye mixtures by Fenton method and to optimize with the Taguchi method. Moreover, the aim is to examine the relationship between these parameters and ORP by regression analysis, and the change of organic groups by FTIR analysis in the effluent. As a result of the study, it was observed that the parameters considered had different effects on COD and color removal. There was an increase in both color and COD removal only with the increase in H2O2 concentration. The highest COD and color removal yields were 95.8% and 99.3%, respectively. As a conclusion, Fenton process is a method that can be preferred in the treatment of textile dyestuffs since the chemicals used are non-toxic, abundant and economical, and therefore, the operation cost of the system is quite favorable, providing advantages to compete with other advanced oxidation processes.

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I would like to thank Prof. Filiz Nuran Acar for allowing me to use laboratory facilities.

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Correspondence to E. Adar.

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Editorial responsibility: M. Abbaspour.

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Adar, E. Optimization of triple dye mixture removal by oxidation with Fenton. Int. J. Environ. Sci. Technol. (2020). https://doi.org/10.1007/s13762-020-02782-1

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  • FTIR
  • ORP
  • Observation
  • COD
  • Color
  • Treatment
  • Taguchi
  • Synthetic wastewater