Decolorization and mineralization of yellow 5 (E102) by UV/Fe2+/H2O2 process. Optimization of the operational conditions by response surface methodology
Por:
GilPalvas, E., Gómez, C.M., Rynkowski, J.M., Dobrosz-Gómez, I., Gómez-García, M.Á.
Publicada:
1 oct 2015
Resumen:
In this study, the optimization and implementation of a homogeneous
photo-Fenton process for the decolorization and mineralization of a
wastewater containing highly concentrated yellow 5 (E102) dye, resulting
from an industry placed in the suburbs of Medellin (Colombia), is
presented. Response surface methodology was applied as a tool for the
optimization of operational conditions such as initial dyestuff
concentration. H2O2 concentration, and UV-radiation power (number of
lamps). The decolorization, degradation and mineralization efficiencies
were used as response variables. The following conditions were found to
be optimal for decolorization and mineralization of yellow 5:UV
radiation of 365 nm (4W. one lamp), dye concentration of 200 mg/L, Fe2+
concentration of 1.0 mM, H2O2 concentration of 1.75 mL/L, treatment time
of 180 min, Fe2+ concentration of 1 mM and pH = 3. Under these
conditions (180 min), the photo-Fenton process allowed us to reach ca.
100% of color dye degradation, 99% of COD degradation, and 85% of
mineralization (TOC). The scavenging effect of the CI- anion on the
photodegradation process was also confirmed. (C) 2015 Academie des
sciences. Published by Elsevier Masson SAS. All rights reserved.
Filiaciones:
GilPalvas, E.:
GIPAB: Grupo de Investigación en Procesos Ambientales, Departamento de Ingeniería de Procesos, Universidad EAFIT, Carrera 49 #7 sur 50, Medellín, Colombia
Gómez, C.M.:
GIPAB: Grupo de Investigación en Procesos Ambientales, Departamento de Ingeniería de Procesos, Universidad EAFIT, Carrera 49 #7 sur 50, Medellín, Colombia
Rynkowski, J.M.:
Institute of General and Ecological Chemistry, Lodz University of Technology, 90-924 Lodz, Zeromskiego, Poland
Dobrosz-Gómez, I.:
Grupo de Investigación en Procesos Reactivos Intensificados con Separación y Materiales Avanzados - PRISMA, Departamento de Física y Química, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Colombia, Sede Manizales, Campus La Nubia, km 9 vía al Aeropuerto la Nubia, Apartado Aéreo 127, Manizales, Caldas, Colombia
Gómez-García, M.Á.:
Grupo de Investigación en Procesos Reactivos Intensificados con Separación y Materiales Avanzados-PRISMA, Departamento de Ingeniería Química, Facultad de Ingeniería y Arquitectura, Universidad Nacional de Colombia, Sede Manizales, Campus La Nubia, km 9 vía al Aeropuerto la Nubia, Apartado Aéreo 127, Manizales, Caldas, Colombia
Bronze
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