TY - JOUR
T1 - Acid blue 29 decolorization and mineralization by anodic oxidation with a cold gas spray synthesized Sn-Cu-Sb alloy anode
AU - do Vale-Júnior, Edilson
AU - Dosta, Sergi
AU - Cano, Irene Garcia
AU - Guilemany, Josep Maria
AU - Garcia-Segura, Sergi
AU - Martínez-Huitle, Carlos Alberto
N1 - Funding Information:
Brazilian financial support from National Council for Scientific and Technological Development ( CNPq - 446846/2014-7 and CNPq - 401519/2014-7 ) and the Ministerio de Economia y Competitividad (MINECO) from Spain, under the project MAT2013 46755R are gratefully acknowledged. E. V. Júnior acknowledges the grant awarded from CAPES and S. Garcia-Segura also acknowledges the post-doctoral grant of PNPD/CAPES.
Publisher Copyright:
© 2016 Elsevier Ltd.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - The elevated cost of anodic materials used in the anodic oxidation for water treatment of effluents undermines the real application of these technologies. The study of novel alternative materials more affordable is required. In this work, we report the application of Sn-Cu-Sb alloys as cheap anodic material to decolorize azo dye Acid Blue 29 solutions. These anodes have been synthesized by cold gas spray technologies. Almost complete decolorization and COD abatement were attained after 300 and 600 min of electrochemical treatment, respectively. The influence of several variables such as supporting electrolyte, pH, current density and initial pollutant concentration has been investigated. Furthermore, the release and evolution of by-products was followed by HPLC to better understand the oxidative power of Sn-Cu-Sb electrodes.
AB - The elevated cost of anodic materials used in the anodic oxidation for water treatment of effluents undermines the real application of these technologies. The study of novel alternative materials more affordable is required. In this work, we report the application of Sn-Cu-Sb alloys as cheap anodic material to decolorize azo dye Acid Blue 29 solutions. These anodes have been synthesized by cold gas spray technologies. Almost complete decolorization and COD abatement were attained after 300 and 600 min of electrochemical treatment, respectively. The influence of several variables such as supporting electrolyte, pH, current density and initial pollutant concentration has been investigated. Furthermore, the release and evolution of by-products was followed by HPLC to better understand the oxidative power of Sn-Cu-Sb electrodes.
KW - Dimensional stable anode
KW - Dyes
KW - Electrochemical oxidation
KW - Thermal projection
KW - Wastewater treatment
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U2 - 10.1016/j.chemosphere.2016.01.015
DO - 10.1016/j.chemosphere.2016.01.015
M3 - Article
C2 - 26802262
AN - SCOPUS:84960402701
SN - 0045-6535
VL - 148
SP - 47
EP - 54
JO - Chemosphere
JF - Chemosphere
ER -