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Electrochemical degradation of industrial textile dye disperse yellow 3: Role of electrocatalytic material and experimental conditions on the catalytic production of oxidants and oxidation pathway.
Chemosphere. 2018 May; 198:21-29.C

Abstract

This study aimed to verify the efficiency of the electrochemical oxidation process for removal the industrial textile Disperse Yellow 3 (DY3) dye in aqueous solutions using different electrocatalytic materials: boron-doped diamond (BDD), Ti/Ru0.3Ti0.7O2 and Ti/Pt anodes. The results were obtained by applying different current densities (40 and 60 mA cm-2) at 40 °C using different supporting electrolytes (Na2SO4 50 mM and NaCl 50 mM) under values of pH about 2.3, 7.0 and 10.0. Results obtained shown that the process was faster at the beginning of the process for all electrocatalytic materials, using Na2SO4 as electrolyte, being more efficient for BDD anode reaching more than 90% of TOC and color decay independently of the current density and pH and supporting electrolyte; while up to 50% of color and TOC was eliminated, using the other anodic materials in sulfate. In NaCl medium a complete mineralization was achieved at Ti/Ru0.3Ti0.7O2 at short electrolysis time, followed by BDD and Ti/Pt. The corresponding kinetic analysis confirms these results. Trends of active chlorine species synthesized at Ti/Ru0.3Ti0.7O2, BDD and Ti/Pt anodes, at different pH conditions, demonstrated that, the concentration of active chlorine species depends on the pH conditions and electrode material. Finally, a cost comparison for each electrocatalytic material under different experimental conditions was realized exhibiting the lowest energy consumption and electrolysis time in NaCl medium. Based on the results obtained, the electrochemical elimination of dye and the profile of the carboxylic by-products formed depend on the nature of material, pH and supporting electrolyte.

Authors+Show Affiliations

Facultad de Química y Biología, Universidad de Santiago de Chile, USACh, Casilla 40, Correo 33, Santiago, Chile. Electronic address: ricardo.salazar@usach.cl.Facultad de Química y Biología, Universidad de Santiago de Chile, USACh, Casilla 40, Correo 33, Santiago, Chile.Facultad de Química y Biología, Universidad de Santiago de Chile, USACh, Casilla 40, Correo 33, Santiago, Chile.Federal University of Rio Grande do Norte, Institute of Chemistry Lagoa Nova, CEP 59.072-970, RN, Brazil.Federal University of Rio Grande do Norte, Institute of Chemistry Lagoa Nova, CEP 59.072-970, RN, Brazil.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29421732

Citation

Salazar, Ricardo, et al. "Electrochemical Degradation of Industrial Textile Dye Disperse Yellow 3: Role of Electrocatalytic Material and Experimental Conditions On the Catalytic Production of Oxidants and Oxidation Pathway." Chemosphere, vol. 198, 2018, pp. 21-29.
Salazar R, Ureta-Zañartu MS, González-Vargas C, et al. Electrochemical degradation of industrial textile dye disperse yellow 3: Role of electrocatalytic material and experimental conditions on the catalytic production of oxidants and oxidation pathway. Chemosphere. 2018;198:21-29.
Salazar, R., Ureta-Zañartu, M. S., González-Vargas, C., Brito, C. D. N., & Martinez-Huitle, C. A. (2018). Electrochemical degradation of industrial textile dye disperse yellow 3: Role of electrocatalytic material and experimental conditions on the catalytic production of oxidants and oxidation pathway. Chemosphere, 198, 21-29. https://doi.org/10.1016/j.chemosphere.2017.12.092
Salazar R, et al. Electrochemical Degradation of Industrial Textile Dye Disperse Yellow 3: Role of Electrocatalytic Material and Experimental Conditions On the Catalytic Production of Oxidants and Oxidation Pathway. Chemosphere. 2018;198:21-29. PubMed PMID: 29421732.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrochemical degradation of industrial textile dye disperse yellow 3: Role of electrocatalytic material and experimental conditions on the catalytic production of oxidants and oxidation pathway. AU - Salazar,Ricardo, AU - Ureta-Zañartu,M Soledad, AU - González-Vargas,Camilo, AU - Brito,Christiane do Nascimento, AU - Martinez-Huitle,Carlos A, Y1 - 2017/12/28/ PY - 2017/09/20/received PY - 2017/12/13/revised PY - 2017/12/14/accepted PY - 2018/2/9/pubmed PY - 2018/6/30/medline PY - 2018/2/9/entrez KW - Boron-doped diamond anode KW - DSA-Type electrode KW - Disperse yellow 3 dye KW - Electro oxidation KW - Ti/Pt electrode SP - 21 EP - 29 JF - Chemosphere JO - Chemosphere VL - 198 N2 - This study aimed to verify the efficiency of the electrochemical oxidation process for removal the industrial textile Disperse Yellow 3 (DY3) dye in aqueous solutions using different electrocatalytic materials: boron-doped diamond (BDD), Ti/Ru0.3Ti0.7O2 and Ti/Pt anodes. The results were obtained by applying different current densities (40 and 60 mA cm-2) at 40 °C using different supporting electrolytes (Na2SO4 50 mM and NaCl 50 mM) under values of pH about 2.3, 7.0 and 10.0. Results obtained shown that the process was faster at the beginning of the process for all electrocatalytic materials, using Na2SO4 as electrolyte, being more efficient for BDD anode reaching more than 90% of TOC and color decay independently of the current density and pH and supporting electrolyte; while up to 50% of color and TOC was eliminated, using the other anodic materials in sulfate. In NaCl medium a complete mineralization was achieved at Ti/Ru0.3Ti0.7O2 at short electrolysis time, followed by BDD and Ti/Pt. The corresponding kinetic analysis confirms these results. Trends of active chlorine species synthesized at Ti/Ru0.3Ti0.7O2, BDD and Ti/Pt anodes, at different pH conditions, demonstrated that, the concentration of active chlorine species depends on the pH conditions and electrode material. Finally, a cost comparison for each electrocatalytic material under different experimental conditions was realized exhibiting the lowest energy consumption and electrolysis time in NaCl medium. Based on the results obtained, the electrochemical elimination of dye and the profile of the carboxylic by-products formed depend on the nature of material, pH and supporting electrolyte. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/29421732/Electrochemical_degradation_of_industrial_textile_dye_disperse_yellow_3:_Role_of_electrocatalytic_material_and_experimental_conditions_on_the_catalytic_production_of_oxidants_and_oxidation_pathway_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(17)32062-3 DB - PRIME DP - Unbound Medicine ER -