Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part I. Theoretical analysis
Само за регистроване кориснике
2009
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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.
Кључне речи:
Adsorption isotherms / Binary mixture / Liquid chromatography / Nonlinear frequency response / Harmonic analysis / Higher order frequency response functions / Numerical analysisИзвор:
Journal of Chromatography A, 2009, 1216, 33, 6098-6107Издавач:
- Elsevier, Amsterdam
DOI: 10.1016/j.chroma.2009.06.053
ISSN: 0021-9673
PubMed: 19586632
WoS: 000268907000003
Scopus: 2-s2.0-67650736190
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Ilić, Milica AU - Petkovska, Menka AU - Seidel-Morgenstern, Andreas PY - 2009 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1430 AB - 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. PB - Elsevier, Amsterdam T2 - Journal of Chromatography A T1 - Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part I. Theoretical analysis EP - 6107 IS - 33 SP - 6098 VL - 1216 DO - 10.1016/j.chroma.2009.06.053 ER -
@article{ author = "Ilić, Milica and Petkovska, Menka and Seidel-Morgenstern, Andreas", year = "2009", 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.", publisher = "Elsevier, Amsterdam", journal = "Journal of Chromatography A", title = "Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part I. Theoretical analysis", pages = "6107-6098", number = "33", volume = "1216", doi = "10.1016/j.chroma.2009.06.053" }
Ilić, M., Petkovska, M.,& Seidel-Morgenstern, A.. (2009). Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part I. Theoretical analysis. in Journal of Chromatography A Elsevier, Amsterdam., 1216(33), 6098-6107. https://doi.org/10.1016/j.chroma.2009.06.053
Ilić M, Petkovska M, Seidel-Morgenstern A. Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part I. Theoretical analysis. in Journal of Chromatography A. 2009;1216(33):6098-6107. doi:10.1016/j.chroma.2009.06.053 .
Ilić, Milica, Petkovska, Menka, Seidel-Morgenstern, Andreas, "Determination of competitive adsorption isotherms applying the nonlinear frequency response method Part I. Theoretical analysis" in Journal of Chromatography A, 1216, no. 33 (2009):6098-6107, https://doi.org/10.1016/j.chroma.2009.06.053 . .