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  Nonlinear frequency response method for estimation of single solute adsorption isotherms. Part II: Experimental study

Ilic, M., Petkovska, M., & Seidel-Morgenstern, A. (2007). Nonlinear frequency response method for estimation of single solute adsorption isotherms. Part II: Experimental study. Chemical Engineering Science, 62(16), 4394-4408. doi:10.1016/j.ces.2007.05.005.

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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              
2University of Belgrade, Department of Chemical Engineering, Faculty of Technology and Metallurgy, Belgrade, Serbia, ou_persistent22              
3Otto-von-Guericke-Universität Magdeburg, External Organizations, ou_1738156              

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Free keywords: Adsorption isotherms; Liquid chromatography; Nonlinear frequency response; Harmonic analysis; Higher-order frequency response functions; Parameter estimation
 Abstract: The aim of this paper is to investigate the possibility of applying a nonlinear frequency response method described by Ilić et al. (2007b) to determine single solute adsorption isotherms. The method is based on the analysis of the nonlinear frequency response of a chromatographic column to a periodical change of the inlet concentration around several steady-state concentrations. The first, second and third local derivatives of single solute isotherms are estimated from the low frequency asymptotic behaviour of the corresponding frequency response functions. The adsorption of 4-tert-butylphenol and ethyl benzoate as single solutes is studied on octadecyl silica (C18) from methanol-water mixture (60:40). Experiments are performed using a standard gradient HPLC unit capable to realize inlet concentration changes in a nearly sine waveform. Small injections of compounds into the not preloaded column, as well as conventional frontal analysis experiments are performed for rough estimation of the adsorption isotherm coefficients and comparison with the results obtained using the nonlinear frequency response method. Copyright © 2007 Elsevier Ltd. All rights reserved. [accessed 2013 November 26th]

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Language(s): eng - English
 Dates: 2007
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 298322
Other: 11/07 b
DOI: 10.1016/j.ces.2007.05.005
 Degree: -

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Title: Chemical Engineering Science
  Other : Chem. Eng. Sci.
Source Genre: Journal
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Publ. Info: Amsterdam : Pergamon
Pages: - Volume / Issue: 62 (16) Sequence Number: - Start / End Page: 4394 - 4408 Identifier: ISSN: 0009-2509
CoNE: https://pure.mpg.de/cone/journals/resource/954925389239