Diseño estadístico para la remoción eficiente del colorante rojo 40 sobre tusa de maíz
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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. Industrial colored effluents are an evident indicator of water pollution. Small quantities of dye
affect, negatively, the appearance of water bodies and dramatically affect water regeneration, affecting the aquatic
life. Several physical-chemical and biological methods have been usted to treat colored effluents, with considerable
efficiency degrees, but they are expensive and produce more toxic by-products, so there are problems for
their use. Adsorption with alternative adsorbents has proved its efficiency to eliminate colorants in solutions.
Objetive. Achieving the maximum removal of the red 40 dye on corn cob by the use of a statistical experimental
design and characterize the adsorbent material. Materials and methods. The most important variables
of the adsorption process were evaluated under a discontinuous system through a factorial design, with the
support of the Statgraphics software for its execution and analysis. The remaining concentration of the colorant
was determined with the absorbance, by the use of an UV-vis Perkin Elmer Lamba spectrophotometer. Results.
A maximum removal of 99% was achieved with the statistical model used, and a good adjustment (R2 equals
98.97%). The pH was the most significant variable in the adsorption of the red 40 dye. Conclusions. Corn cob
proved to be an excellent adsorption material and the high removal degree achieved was due to the statistical
experimental design, which is more economic and facilitates the analysis of the most important variables involved
in the process.
Description
Keywords
Corporación Universitaria Lasallista, Área Metropolitana del Valle de Aburrá, Colorante rojo 40, Residuos industriales, Aguas residuales coloreadas, Aguas residuales, Contaminación, Contaminación del agua, Contaminación ambiental, Absorción