ARTÍCULO
TITULO

Comparative study of the adsorption of cadmium and zinc on activated bone char

Pedro Henrique Rodrigues da Silva    
Jéssica Gonçalves Barbosa    
Rodrigo Augusto Barella    
Anderson Barros Caixeta Araújo    
Indianara Conceição Ostroski    

Resumen

The goal of this work was to study the adsorption equilibrium of ions Zn2+ and Cd2+ using bovine bone char in fixed bed columns. Dynamic tests were performed with upstream flow fixed bed column, at 30oC and average particle diameter of 0.08 mm. Initially, the optimal operating flow rate was determined, which was 4 mL min.-1 for both metals. The dynamic isotherms, obtained by mass balance in the breakthrough curves, were fitted to the Langmuir and Freundlich models. Simulations of the dynamics of ion adsorption provided satisfactory results, wherein the mass transfer coefficient was directly affected by the inflow concentration of ions, within the range of the study. 

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