Optimization of the 3D electro-Fenton process in removal of acid orange 10 from aqueous solutions by response surface methodology

Mohammadi, H. and Alinejad, A. and Khajeh, M. and Darvishmotevalli, M. and Moradnia, M. and Tehrani, A.M. and Hosseindost, G. and Zare, M.R. and Mengelizadeh, N. (2019) Optimization of the 3D electro-Fenton process in removal of acid orange 10 from aqueous solutions by response surface methodology. Journal of Chemical Technology and Biotechnology, 94 (10). pp. 3158-3171.

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Abstract

BACKGROUND: In recent decades, rapid population growth and industrial development have led to the release of toxic compounds into water resources. Several technologies have been proposed to address the problem, and among them, the 3D electro-Fenton process has found great popularity due to its high efficiency and simple operation. In the 3D electro-Fenton process, the type of particle electrode is one of the most important factors owing to its impact on the reduction of energy consumption and generation of reactive species. In the present study, the optimization of the 3D electro-Fenton process coupled with iron-coated nickel foam (NF-Fe), as a new particle electrode, in the removal of acid orange 10 was investigated using response surface methodology (RSM). RESULTS: The RSM results showed that the quadratic model has a high R2 and high F-value based on ANOVA analysis. The optimum efficiency of dye removal (99.15) was obtained at pH 5.6, an NF-Fe dosage of 0.68 g L�1, a time of 34.6 min, and current density of 23.62 mA cm�2. Comparative tests showed the high efficiency of the 3D electro-Fenton process compared to other electrochemical systems. Quenching experiments demonstrated the production of different reactive species in the 3D process. The stability experiment proved that the NF-Fe has a high potential to improve the long-term degradation of dye. CONCLUSIONS: Due to its high efficiency, production of more reactive species and excellent stability of the NF-Fe electrode, this 3D electro-Fenton process is an excellent option for removal of dye from aqueous solutions. © 2019 Society of Chemical Industry. © 2019 Society of Chemical Industry

Item Type: Article
Additional Information: cited By 0
Uncontrolled Keywords: Chemical industry; Citrus fruits; Degradation; Electrodes; Energy utilization; Metal coatings; Population statistics; Surface properties; Water resources, Acid Orange 10; Degradation mechanism; Electro-fenton; Electro-Fenton process; Electrochemical systems; Industrial development; Rapid population growth; Response surface methodology, Iron compounds, acid orange 10; dye; iron; nickel; unclassified drug, aqueous solution; Article; comparative study; controlled study; current density; decolorization; Fenton reaction; foam; model; photochemical quenching; process optimization; response surface method
Subjects: Chemistry
Divisions: Faculty of Medicine > Basic Sciences > Department of Pharmacology
Depositing User: ART . editor
Date Deposited: 01 Jan 2020 12:17
Last Modified: 01 Jan 2020 12:17
URI: http://eprints.kaums.ac.ir/id/eprint/4439

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