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Electrodegradation of the Acid Green 28 dye using Ti/β-PbO2 and Ti-Pt/β-PbO2 anodes.
J Environ Manage. 2016 Dec 01; 183:306-313.JE

Abstract

The statistical Response Surface Methodology (RSM) is applied to investigate the effect of different parameters (current density, j, NaCl concentration, [NaCl], pH, and temperature, θ) and their interactions on the electrochemical degradation of the Acid Green (AG) 28 dye using a Ti/β-PbO2 or Ti-Pt/β-PbO2 anode in a filter-press reactor. LC/MS is employed to identify intermediate compounds. For both anodes, the best experimental conditions are j = 50 mA cm(-2), [NaCl] = 1.5 g L(-1), pH = 5, and θ = 25 °C. After 3 h of electrolysis, a dye solution treated under these conditions presents the following parameters: electric charge per unit volume of the electrolyzed solution required for 90% decolorization (Q(90)) of 0.34-0.37 A h L(-1), %COD removal of ∼100%, specific energy consumption of 18-20 kW h m(-3), and %TOC removal of 32-33%. No loss of the β-PbO2 film is observed during all the experiments. The β-PbO2 films present excellent stability for solutions with pH ≥ 5 ([Pb(2+)] < 0.5 mg L(-1)). Chloroform is the only volatile organic halo compound present in the treated solution under those optimized conditions. Hydroxylated anthraquinone derivatives, aromatic chloramines, and naphthoquinones are formed during the electrolyses. The Ti/β-PbO2 and Ti-Pt/β-PbO2 anodes show significantly better performance than a commercial DSA anode for the electrochemical degradation of the AG 28 dye. The Ti/β-PbO2 anode, prepared as described in this work, is an excellent option for the treatment of textile effluents because of its low cost of fabrication and good performance.

Authors+Show Affiliations

Departamento de Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos, SP, Brazil.Departamento de Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos, SP, Brazil. Electronic address: bocchi@ufscar.br.Departamento de Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos, SP, Brazil.Departamento de Química, Universidade Federal de São Carlos, C.P. 676, 13560-970 São Carlos, SP, Brazil.Departamento de Química Física, Instituto Universitario de Electroquímica, Facultad de Ciencias, Universidad de Alicante, Apartado de Correos 99, E-03080 Alicante, Spain.Departamento de Química Física, Instituto Universitario de Electroquímica, Facultad de Ciencias, Universidad de Alicante, Apartado de Correos 99, E-03080 Alicante, Spain.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27604754

Citation

Irikura, Kallyni, et al. "Electrodegradation of the Acid Green 28 Dye Using Ti/β-PbO2 and Ti-Pt/β-PbO2 Anodes." Journal of Environmental Management, vol. 183, 2016, pp. 306-313.
Irikura K, Bocchi N, Rocha-Filho RC, et al. Electrodegradation of the Acid Green 28 dye using Ti/β-PbO2 and Ti-Pt/β-PbO2 anodes. J Environ Manage. 2016;183:306-313.
Irikura, K., Bocchi, N., Rocha-Filho, R. C., Biaggio, S. R., Iniesta, J., & Montiel, V. (2016). Electrodegradation of the Acid Green 28 dye using Ti/β-PbO2 and Ti-Pt/β-PbO2 anodes. Journal of Environmental Management, 183, 306-313. https://doi.org/10.1016/j.jenvman.2016.08.061
Irikura K, et al. Electrodegradation of the Acid Green 28 Dye Using Ti/β-PbO2 and Ti-Pt/β-PbO2 Anodes. J Environ Manage. 2016 Dec 1;183:306-313. PubMed PMID: 27604754.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrodegradation of the Acid Green 28 dye using Ti/β-PbO2 and Ti-Pt/β-PbO2 anodes. AU - Irikura,Kallyni, AU - Bocchi,Nerilso, AU - Rocha-Filho,Romeu C, AU - Biaggio,Sonia R, AU - Iniesta,Jesús, AU - Montiel,Vicente, Y1 - 2016/09/04/ PY - 2016/04/20/received PY - 2016/07/15/revised PY - 2016/08/24/accepted PY - 2016/9/9/entrez PY - 2016/9/9/pubmed PY - 2017/4/11/medline KW - Chlorine-mediated oxidation KW - Electrochemical oxidation KW - Lead dioxide anode KW - Response surface methodology (RSM) KW - Synthetic dye degradation KW - Treatment of textile effluents SP - 306 EP - 313 JF - Journal of environmental management JO - J Environ Manage VL - 183 N2 - The statistical Response Surface Methodology (RSM) is applied to investigate the effect of different parameters (current density, j, NaCl concentration, [NaCl], pH, and temperature, θ) and their interactions on the electrochemical degradation of the Acid Green (AG) 28 dye using a Ti/β-PbO2 or Ti-Pt/β-PbO2 anode in a filter-press reactor. LC/MS is employed to identify intermediate compounds. For both anodes, the best experimental conditions are j = 50 mA cm(-2), [NaCl] = 1.5 g L(-1), pH = 5, and θ = 25 °C. After 3 h of electrolysis, a dye solution treated under these conditions presents the following parameters: electric charge per unit volume of the electrolyzed solution required for 90% decolorization (Q(90)) of 0.34-0.37 A h L(-1), %COD removal of ∼100%, specific energy consumption of 18-20 kW h m(-3), and %TOC removal of 32-33%. No loss of the β-PbO2 film is observed during all the experiments. The β-PbO2 films present excellent stability for solutions with pH ≥ 5 ([Pb(2+)] < 0.5 mg L(-1)). Chloroform is the only volatile organic halo compound present in the treated solution under those optimized conditions. Hydroxylated anthraquinone derivatives, aromatic chloramines, and naphthoquinones are formed during the electrolyses. The Ti/β-PbO2 and Ti-Pt/β-PbO2 anodes show significantly better performance than a commercial DSA anode for the electrochemical degradation of the AG 28 dye. The Ti/β-PbO2 anode, prepared as described in this work, is an excellent option for the treatment of textile effluents because of its low cost of fabrication and good performance. SN - 1095-8630 UR - https://www.unboundmedicine.com/medline/citation/27604754/Electrodegradation_of_the_Acid_Green_28_dye_using_Ti/β_PbO2_and_Ti_Pt/β_PbO2_anodes_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0301-4797(16)30605-3 DB - PRIME DP - Unbound Medicine ER -