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Type: Artigo de periódico
Title: Application of the mass action law to describe ion exchange equilibrium in a fixed-bed column
Author: Borba, CE
Silva, EA
Spohr, S
Santos, GHF
Guirardello, R
Abstract: Ion exchange experiments were carried out in a fixed-bed column employing the binary systems Cu(2+)-Na(+) and Zn(2+)-Na(+). Amberlite IR 120 was used as the ion exchange resin. The ion exchange dynamics within the column was described by a model considering the external mass transfer and the diffusion within the particle. A linear driving force model was used to represent the mass transfer within the resin particles. The model considered the thermodynamic equilibrium on the liquid-solid interface, which was described by the Langmuir isotherm and by the mass action law. The results indicate that both models represent well the ion exchange dynamics in all cases. (C) 2011 Elsevier B.V. All rights reserved.
Subject: Fixed bed
Ion exchange
Mass action law
Country: Suíça
Editor: Elsevier Science Sa
Rights: fechado
Identifier DOI: 10.1016/j.cej.2011.06.002
Date Issue: 2011
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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