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  Determination of competitive adsorption isotherms applying the nonlinear frequency response method: Part I. Theoretical analysis

Ilic, M., Petkovska, M., & Seidel-Morgenstern, A. (2009). Determination of competitive adsorption isotherms applying the nonlinear frequency response method: Part I. Theoretical analysis. Journal of Chromatography A, 1216(33), 6098-6107. doi:10.1016/j.chroma.2009.06.053.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-939F-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-1CC1-C
Genre: Journal Article

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 Creators:
Ilic, M.1, Author              
Petkovska, M.2, Author
Seidel-Morgenstern, A.1, 3, Author              
Affiliations:
1Physical and Chemical Foundations of Process Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738150              
2Faculty of Technology and Metallurgy, Department of Chemical Engineering, Belgrade, Serbia, ou_persistent22              
3Otto-von-Guericke-Universität Magdeburg, External Organizations, ou_1738156              

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Free keywords: Adsorption isotherms; Binary mixture; Liquid chromatography; Nonlinear frequency response; Harmonic analysis; Higher order frequency response functions; Numerical analysis
 Abstract: In this work adsorption equilibria of binary mixtures are quantified analyzing the nonlinear frequency response of a chromatographic column. Local partial derivatives of an isotherm model can be estimated for certain steady-states from the low frequency asymptotes of the corresponding frequency response functions (FRFs). The required FRFs correspond to two different compounds and the type of the imposed inlet concentration changes, e.g. periodical inlet concentration changes of only one compound or of both of them. For an accurate determination of isotherm parameters, it is necessary to approach as close as possible the low frequency asymptotic behaviour of these functions. Based on principles valid for the FRFs corresponding to the adsorption of a single solute, frequencies needed to reach the low frequency asymptotes of the functions of interest for estimating competitive isotherms are defined in this paper. The relation between the accuracy of the isotherm parameters determined and numbers and types of periodical inlet concentration changes and steady-states analyzed is also evaluated. Copyright © 2009 Elsevier B.V. All rights reserved. [accessed November 25, 2009]

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Language(s): eng - English
 Dates: 2009
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 437225
DOI: 10.1016/j.chroma.2009.06.053
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Title: Journal of Chromatography A
Source Genre: Journal
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Pages: - Volume / Issue: 1216 (33) Sequence Number: - Start / End Page: 6098 - 6107 Identifier: -