Degradación y mineralización del colorante rojo punzó empleando el reactivo de Fenton
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Date
2012
Journal Title
Journal ISSN
Volume Title
Publisher
Corporación Universitaria Lasallista
Área Metropolitana del Valle de Aburrá
Área Metropolitana del Valle de Aburrá
Abstract
Introduction. This paper introduces the use of an advanced oxidation technique to remove and mineralize the
ponceau red dye, which is widely used in food industries locally, nationally and internationally. Objective. To evaluate
the degradation and the mineralization of the ponceau red dye, by the use of the Fenton reagent. Materials
and methods. A reagent consisting of a glass bucket which served as a reservoir for the sample and for the
degradation. Additionally, an internal mixture system was installed to keep the solution homogeneous during the
experimentation period, which took two (2) hours. An initial concentration of 100 mg/L of the ponceau red dye
was used, and the solution to be treated was kept as a pH of 3,0. The degradation of the dye was determined by
the use of UV/Visible spectrophotometry at a 505 nm. Of wavelength and the mineralization was determined by
the appearing of sulfates as a by-product of the degradation at 420nm of wavelength, according with the Sulfates
parameter taken from the normalized methods to analyze water and waste water. Results. The degradation and
the mineralization of the ponceau red dye was achieved by the use of several combinations of the Fenton reagent.
Additionally, the best percentages of removal and mineralization of the dye obtained were 97,8 and 86,2%, respectively,
by means of the combination of the Fenton reaction that corresponded to 10 mg/L of Fe 3+and 0,10 %v/v of
the oxidation agent hydrogen peroxide. Conclusion. The Fenton reaction is adequate to degrade and mineralize
the ponceau red dye and reaches high removal and mineralization percentages of that dye.
Description
Keywords
Corporación Universitaria Lasallista, Área Metropolitana del Valle de Aburrá, Mineralización, Colorante rojo punzó, Fotofenton, Colorante azoico, Peróxido de hidrógeno (H2O2), Industria alimenticia, Contaminación, Contaminación del agua