Volume 41, Issue 8 pp. 1622-1630
Research Article

Simple Procedure to Estimate Mass Transfer Coefficients from Uptake Curves on Activated Carbons

Rafael Magalhães Siqueira

Rafael Magalhães Siqueira

Universidade Federal do Ceará, Department of Chemical Engineering, Campus do Pici, 60455-760 Fortaleza, Brasil

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Enrique Vilarrasa-García

Enrique Vilarrasa-García

Universidade Federal do Ceará, Department of Chemical Engineering, Campus do Pici, 60455-760 Fortaleza, Brasil

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Antônio Eurico Belo Torres

Antônio Eurico Belo Torres

Universidade Federal do Ceará, Department of Chemical Engineering, Campus do Pici, 60455-760 Fortaleza, Brasil

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Diana Cristina Silva de Azevedo

Diana Cristina Silva de Azevedo

Universidade Federal do Ceará, Department of Chemical Engineering, Campus do Pici, 60455-760 Fortaleza, Brasil

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Moisés Bastos-Neto

Corresponding Author

Moisés Bastos-Neto

Universidade Federal do Ceará, Department of Chemical Engineering, Campus do Pici, 60455-760 Fortaleza, Brasil

Correspondence: Moisés Bastos-Neto ([email protected]), Universidade Federal do Ceará, Department of Chemical Engineering, Campus do Pici, 60455-760 Fortaleza, Brasil.Search for more papers by this author
First published: 23 May 2018
Citations: 12

Abstract

A method based on the linear driving force (LDF) approximation is described to estimate the mass transfer coefficient of molecules adsorbing onto microporous carbons, by using independently measured uptake data. This parameter was determined from uptake curves derived from pressure increments during the measurement of isotherm data. To validate the method, simulations for batch uptake were performed and compared to the experimental data in order to obtain the values for the LDF constants. Such values were applied to predict breakthrough curves and compared to experimental data. The proposed method to estimate the LDF coefficient can be adequate to obtain a more physically meaningful value of the mass transfer coefficient.

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