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DOI: https://doi.org/10.4491/eer.2018.042
Fixed bed column modeling of lead(II) and cadmium(II) ions biosorption on sugarcane bagasse
Luisa Mayra Vera1, Daniel Bermejo1, María Fernanda Uguña1, Nancy Garcia1, Marittza Flores1, and Enrique González2
1Chemical Department, University Cuenca, Avenida 12 de Abril, Cuenca, Ecuador
2Chemical Engineering Department, University of La Laguna, Av. Astrofísico Fco. Sánchez s/n, 38200 La Laguna, Spain
Corresponding Author: Enrique González ,Tel: +34-922818056, Fax: +34-922318014, Email: eglezc@ull.es
Received: January 23, 2018;  Accepted: May 12, 2018.
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ABSTRACT
In this paper the results of the biosorption of lead(II) and cadmium(II) with sugarcane bagasse in fixed bed columns are presented. Experimental data were fitted to several models describing the rupture curve for single-component and two-component systems. The percentages of removal of lead and cadmium in single-component systems are 91% and 90%, respectively. In lead-cadmium bicomponent systems the percentage of elimination of lead was 90% and cadmium 92%. In single-component systems, Yoon-Nelson and Thomas models successfully reproduce the rupture curves. In two-component system, the Dose-Response model was the best one reproducing the experimental rupture curves in the entire measured range.
Keywords: Biosorption in columns | Heavy metals | Rupture curve | Sorption modeling | Sugarcane bagasse
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