TY - JOUR
T1 - Electrochemical oxidation of methyl orange azo dye at pilot flow plant using BDD technology
AU - Ramírez, Cecilia
AU - Saldaña, Adriana
AU - Hernández, Berenice
AU - Acero, Roberto
AU - Guerra, Ricardo
AU - Garcia-Segura, Sergi
AU - Brillas, Enric
AU - Peralta-Hernández, Juan M.
N1 - Funding Information:
The authors thank the financial support from CIATEC GD0059 , GD0065 and FORDECyT 143288 (Mexico) and from MICINN (Ministerio de Ciencia e Innovación, Spain) under project CTQ2010-16164/BQU, co-financed with FEDER funds. The fellowship awarded to S. Garcia-Segura from MEC (Ministerio de Educación y Ciencia, Spain) is acknowledged. The help of Leslie Knapp (Volunteer sponsored by the Peace Corps under agreement with CONACyT) in the manuscript revision is also acknowledged.
PY - 2013/3/25
Y1 - 2013/3/25
N2 - Solutions of methyl orange azo dye were degraded by electrochemical oxidation using a 3L flow plant with a boron-doped diamond (BDD)/stainless steel cell operating at constant current density, ambient temperature and liquid flow rate of 12Lmin-1. A 23 factorial design considering the applied current density, azo dye concentration and electrolysis time as variable independents was used to analyze the process by response surface methodology. LC-MS analysis revealed the formation of seven oxidation products from the cleavage of the NN group of the dye, followed by deamination, formation of a nitro group and/or desulfonation of the resulting aromatics.
AB - Solutions of methyl orange azo dye were degraded by electrochemical oxidation using a 3L flow plant with a boron-doped diamond (BDD)/stainless steel cell operating at constant current density, ambient temperature and liquid flow rate of 12Lmin-1. A 23 factorial design considering the applied current density, azo dye concentration and electrolysis time as variable independents was used to analyze the process by response surface methodology. LC-MS analysis revealed the formation of seven oxidation products from the cleavage of the NN group of the dye, followed by deamination, formation of a nitro group and/or desulfonation of the resulting aromatics.
KW - BDD
KW - Electrochemical oxidation
KW - Methyl orange
KW - Oxidation products
KW - Response surface methodology
KW - Wastewater treatment
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U2 - 10.1016/j.jiec.2012.09.010
DO - 10.1016/j.jiec.2012.09.010
M3 - Article
AN - SCOPUS:84871517624
SN - 1226-086X
VL - 19
SP - 571
EP - 579
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
IS - 2
ER -