Evaluación de la tusa de maíz como bioadsorbente para la remoción de colorante Rojo Allura en muestras obtenidas de un proceso industrial simulado
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Azo dyes are widely used in industries such as textiles, pharmaceuticals, food and cosmetics. It has been proven that these dyes have a high carcinogenic potential, in addition to their presence in water sources, affects the photosynthetic processes of aquatic biota because it prevents the passage of solar radiation (Figueroa. D, Moreno. A, and Hormanza. A; 2014).. Within these, the red dye allura is one of the most used as an additive in beverages, food and sweets, due to the pigmentation it generates in the water resource is considered toxic because it is a recalcitrant and bio-accumulative substance affecting water quality and human health. The removal of dissolved dyes in water bodies using bioadsorbents has become an efficient and low-cost alternative. Adoration kinetics was used to evaluate corn as a bioadsorbent for the removal of allura red in samples from a simulated industrial process. To do this, batch discontinuous reactor tests were used maintaining conditions of temperature, pH, speed, stirring time and amount of adsorbent material. In this way the construction of isotherms is done, being Langmuir the one of better adjustment; which allowed to determine the maximum capacity of the adsorbent that was of 8.45 mg/g. The saturation curve is performed in which 140 mg/L was established as the optimum working concentration; in the kinetics of the process it was concluded that the adsorption speed is much faster within the first 45 minutes which is taken as the optimum contact time. And finally, by feeding the fixed bed column with the simulation of an energy drink, a 99.86% removal is obtained.