Kinetics of degradation and mineralization of the Amaranth Red dye by using sunlight photocatalysis
Journal Title: Revista Lasallista de Investigación - Year 2005, Vol 2, Issue 1
Abstract
Introduction: Oxidation sensitized with TiO2 and sunlight, is a technique that can be used as a water purification system, especially on the treatment of liquid industrial wastes in which the content of synthetic toxic compounds are difficult to be eliminated by other conventional ways. Objective: To determine the kinetics of degradation and mineralization of the amaranth red dye contained in water during the photocatalysis process with titanium dioxide, using a parabolic cylinder sunlight collector. Materials and Methods: To determine the kinetics of degradation and mineralization of the the order of the reaction for each one of the experiments made, considering the color concentrations and residual COT in order to determine, afterwards, the constant rates of velocity and the mid-life times of the color contained in water after 8 hours of treatment. Results: Considering each of the conditions of the experiments, the most influential parameter on the times of the dye´s mid life is the use of TiO2, along with hydrogen peroxide. The shortest exposition to sunlight in which a 50% diminishing of the color was made (time of midlife) was 1.92 hours, for the condition in which 150mg/L of TiO2 and 2 ml/L of hydrogen peroxide were used. Under this condition a media rate of degradation of 93.48% was reached. Conclusion: The use of the adequate quantities and concentrations of TiO2 and H2O2 allows the treatment of dyed waters taking time periods lower than 8 hours of sunlight to degrade the color contained, in a high percentage, in water.
Authors and Affiliations
Luis Fernando Garcés Giraldo , Gustavo Antonio Peñuela Mesa
Keywords
Related Articles
- EP ID EP107591
- DOI -
- Views 84
- Downloads 0
Modelación de isolíneas meteorológicas y cálculo del gradiente térmico para la ciudad de Puebla (México) durante el periodo junio 2005-2006 con apoyo de imágenes satelitales
Introducción. En este trabajo se presenta la modelación en 2-D, 3-D y el análisis estadístico de los datos obtenidos por la estación meteorológica automática Cumulus. Objetivo. Determinar el comportamiento de isolíneas m...
Cada investigador tiene algo de don Quijote
Photocatalysis of Orange – 84 Reactive dye using a sunlight collector
Introduction. Reactive Orange 84 is a dye used in the textile industry, specifically in cotton clothing, which generates a hightly colored residual water, because only 65% of this water is impregnated and the 35% remaini...
Evaluation of the bromatologic quality of kikuyo grass ensilage and forage peanut<br />
Introduction. Ensilage is a method in which the grow of organic micro organisms that degrade organic matter is inhibited, herlping to keep forage. Materials and methods. This work evaluated the effect of four doses of ki...
Exogen porcine somatotropin (STp) and its relation with aminoacids from the diet of pigs in finalization
Introduction. The porcine somatotropine hormone from a recombinant origin (STp) is a compound that modificates metabolism and is used in pork industry during the growth and finalization stages. It allows a different prop...