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A comprehensive study on the heterogeneous electro-Fenton degradation of tartrazine in water using CoFe2O4/carbon felt cathode

Dung, N.T. and Duong, L.T. and Hoa, N.T. and Thao, V.D. and Ngan, L.V. and Huy, N.N. (2022) A comprehensive study on the heterogeneous electro-Fenton degradation of tartrazine in water using CoFe2O4/carbon felt cathode. Chemosphere, 287: 132141. ISSN 456535

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Abstract

In this study, cobalt ferrite coated carbon felt (CoFe2O4/CF) was synthesized by solvothermal method and applied as cathode for electro-Fenton (EF) treatment of tartrazine (TTZ) in water. The materials were characterized by SEM, XRD, FTIR, CV, and EIS to explore their physical, chemical, and electrical properties. The effects of solvothermal temperature and metal content on the TTZ removal were examined, showing that 220 °C with 2 mM of Co and 4 mM of Fe precursors were the best synthesis condition. Various influencing factors such as applied current density, pH, TTZ concentration, and electrolytes were investigated, and the optimal condition was found at 8.33 mA cm−2, pH 3, 50 mgTTZ L−1, and 50 mM of Na2SO4, respectively. By radical quenching test, [Formula presented], 1O2, and HO[rad] were recognized as the key reactive oxygen species and the reaction mechanism was proposed for the EF decolorization of TTZ using CoFe2O4/CF cathode. The reusability and stability test showed that the highly efficient CoFe2O4/CF cathode is very promising for practical application in wastewater treatment, especially for dyes and other recalcitrant organic compounds to improve its biodegradability. © 2021 Elsevier Ltd

Item Type: Article
Divisions: Faculties > Faculty of Physical and Chemical Engineering
Identification Number: 10.1016/j.chemosphere.2021.132141
Uncontrolled Keywords: Biodegradability; Carbon; Cathodes; Cobalt; Felt; Felts; Ferrite; Oxidation; Reusability; Wastewater treatment; Carbon felts; Cobalt ferrites; Electro-fenton; Electro-fenton treatments; FTIR; Reactive oxygen species; Solvothermal method; Synthesised; Tartrazine; XRD; Oxygen; biodegradation; chemical reaction; concentration (composition); degradation; detection method; electrode; electrolyte; iron oxide; reactive oxygen species; wastewater; wastewater treatment
Additional Information: Language of original document: English.
URI: http://eprints.lqdtu.edu.vn/id/eprint/8561

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