Degradation of diazinon from aqueous solutions by electro-Fenton process: effect of operating parameters, intermediate identification, degradation pathway, and optimization using response surface methodology (RSM)

ABSTRACT

In this experimental study, the statistical response surface methodology (RSM) based Box-Behnken design (BBD) was selected for evaluation of the effect of different parameters (solution pH,H₂O₂ concentration, current density, and time) and their interactions on the degradation of the diazinon by electro Fenton process. The results showed that the quadratic model is suitable for the obtained data (P-value = 0.0001) and in optimal process performance conditions was set equal to 100%. Regression analysis with a high correlation coefficient (R² = 0.9980) and the model value of 765.56 indicated the adequacy of the model. Based on the results, the electro-Fenton process is an efficient technique for removing diazinon from aqueous media.

KEYWORDS:

• Electro-Fenton process
• diazinon
• advanced oxidation
• response surface methodology

Acknowledgements

This research was conducted at the Environmental Chemistry Laboratory of the Faculty of Health of Ardabil University of Medical Sciences with the financial support of the deputy of Research and Technology. The authors of the article express their appreciation and gratitude to the relevant experts and officials.

Disclosure statement

The authors declare that they have no competing interests.

Supplementary material

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