Remoción de azul brillante mediante columnas empacadas usando tuza de maíz

Angelina Hormaza Anaguano; Yurany Andrea Villada Villada

doi:10.22490/21456453.911

Vol. 5 No. 1 (2014)

Published 2014-01-07

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Artículos de Investigación

Removal of the brilliant blue through packed columns using corncobs

DOI: https://doi.org/10.22490/21456453.911

Angelina Hormaza Anaguano Universidad Nacional de Colombia, Sede Medellín

Yurany Andrea Villada Villada Universidad Nacional de Colombia, Sede Medellín

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Abstract
References

This research shows the adsorbent potential of corncobs in the removal of the anionic bright blue colorant on packed beds. It was evaluated the effect of pH parameters from this medium, particle size, saline presence and column height. The samples were analyzed by defined intervals of time. The colorant quantity removed was quantified by means of ultraviolet-visible spectroscopy. Models of Adams-Bohart, Thomas and Yoon-Nelson were used to predict the breakthrough curves using nonlinear regression and so set the characteristic parameters of the process. BDST model was used to express the influence of bed height into the breakthrough curve. It was found that acid pH (pH = 2.0) smaller particle size (0.3 mm < x < 0.5 mm) and larger bed height (Z = 20 cm) favor the transfer of colorant to the adsorbent material, reaching greater retention of bright blue on the corncob. The presence of NaCl in the solution reduces the efficiency of adsorption. In terms of models, the Thomas model presented the best setting for the description of the breakthrough curve to the experimental conditions (R2 = 0.93 -0.94), while Adams-Bohart model offered a good fit (R2 = 0.96-0.99) for the dynamic behavior limited to the initial part of the process. Yoon-Nelson model presented a considerable drift between the experimental data and the predicted data. Finally, the BDST model showed a good correlation, R2 = 0.92 -0.99, establishing that the height is a determining factor for scaling of process

keywords: Adsorption on continuous, bed height, anionic dye, curve of rupture, saline effect.

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How to Cite

Hormaza Anaguano, A., & Villada Villada, Y. A. (2014). Removal of the brilliant blue through packed columns using corncobs. Revista De Investigación Agraria Y Ambiental, 5(1), 57-68. https://doi.org/10.22490/21456453.911

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Removal of the brilliant blue through packed columns using corncobs

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