Abstract
The LEA model has been analyzed by comparing to other Chromatographic theoretical approaches. In the LEA model a layer of equilibrium adsorption, Le, serves as an effective kinetic constant. For the layer Le the concentration issuing from this layer is in equilibrium with the average value of adsorption on the whole layer at any moment of time. The value of Le is determined from all factors which broaden the Chromatographie zone. Such an approach permits us to combine the features of the mass balance (solute continuity in a Chromatographie column), of the mass transfer phenomenon, and of the adsorption isotherm into a single first order differential equation. Apart from other layer-by-layer models, the LEA model supposes that over the whole column a continuous (real) distribution of adsorption a (L, t) and concentration c (L, t) is observed. The usefulness of the LEA model in developing a Chromatographic theory has been discussed.
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References
Chuduk, N. A. and Eltekov, Yu. A., “Liquid Chromatography of Aromatic Compounds on Monolayers of Polyethylene Glycol”,J. Polym. Sci. Polym. Symp.,68, 135 (1980).
Dubinin, M. M., Nikolaev, K. M., Polyakov. N. S. and Pirozhkov, G. L., “Porous Structure of Carbon Adsorbents and Adsorbability of Gases and Vapors. 3. The Results of Study of Volatile Solutes Adsorption Dynamics”. Izv. Akad. Nauk SSSR. Ser. Khim., 1487(1980).
Forsythe, R., Madey, R., Photinos, P. J., Rothstein, D. and Huang, J.-Ch., “Gas-Solid Chromatography: Longitudinal and Intraparticle Diffusion of Acetylene in Activated Carbon”,Sep. Sci. & Technol 23, 2319(1988).
Gapon, E. N. and Gapon, T. B., “Chromatographic Exchange Adsorption of Ions. 1. Theory of Ion-Exchange Chromatogram”,Zh. Fiz. Khim.,22, 859(1948).
Giddings, J. C., “Dynamics of Chromatography”, Marcel Dekker, New York, 1965.
Glueckauf, E., “Theory of Chromatography, Part 9. The Theoretical Plate Concept in Column Separations”,Trans. Faraday Soc,51, 34(1955).
Gubkina, M. L., Larin, A. V. and Shehovtsova, L. G., “Model of the Equilibrium Adsorption Layer in Chromatography. 2. Elution Mechanism for Linear Adsorption Isotherm”, Izv. Akad. Nauk SSSR. Ser. Khim., 513 (1985).
Ha, H. Y., Row, K. H. and Lee, W. K., “A Theoretical Plate Model for the Moving Feed-Injection Chromatography: I. Simulation Results”,Sep. Sci. & Technol., 22(1), 141 (1987).
Keulemans, A. I. M., “Gas Chromatography”, Reinhold. New York, 1957.
Larin, A. V., “Use of a Length Scale for Characterization of Adsorption Kinetics in a Layer-by Layer Method”, Izv. Akad. Nauk SSSR. Ser. Khim., 236 (1983a).
Larin, A. V., “Model of Equilibrium Adsorption Layer in Adsorption Dynamics”, Izv. Akad. Nauk SSSR. Ser. Khim., 1235 (1983b).
Larin, A. V., “Model of the Equilibrium Adsorption Layer Chromatography. 1. Statement of the Problem and General Mechanisms of Nonidear Chromatography for Different Sorption Isotherms”, Izv. Akad. Nauk SSSR. Ser. Khim., 1212 (1984).
Larin, A. V., “Application of the Model of the Layer of Equilibrium Adsorption to Non-Ideal Non-Linear Chromatography”,J. Chromatogr.,388, 81(1987).
Larin, A. V., “Theory of the Adsorption Dynamics of Vapors on Microporous Adsorbents (1). Introduction into the Model of a Layer of Equilibrium Adsorption”,Ads. Sci. & Technol., 7(2), 65 (1990).
Larin, A. V., Frolova, E. A. and Chicherina, N. Yu., “The Elution Dynamics of Oil-Soluble Ethoxylated Isononylphenol Adsorption from n-Decane on Silica Gel”,Colloid J., 56(3), 320(1994) [Translated from [Russian]Kolloidnyi Zh.,56, 383 (1994).]
Rachinskii, V. V., “A General Theory for Approximated Calculation of Chromatograms”,Dokl Akad. Nauk SSSR. 88, 701 (1953).
Rouchon, P., Schoenauer, M., Valentin, P., Vidal-Madjar, C. and Guiochon, G., “Theory of Propagation of Finite Concentration Bands in Gas Chromatography. A Numerical Solution of the Ideal Problem”,J. Phys. Chem.,89, 2076(1985).
Row, K. H., “Comparison of the Elution Curves of Pure Components and Their Mixture and Prediction of Elution Curves by a Theoretical Plate Model in Preparative Gas-Liquid Chromatography”,Chromatographia, 25(11), 961(1988).
Sakodynsky, K. I., Streltzov, L. V., Zelvensky, V. Yu., Volkov. S. A. and Rozhenko, I. N., “Plate Model of a Chromatographie Column in the Case of a Nonlinear Sorption Isotherm”.Anal. Chem.,45, 1557(1973).
Smit, J. C., Smit, H. C. and de Jager E. M., “Computer Implementation of Simulation Models for Non-Linear, Non-Ideal Chromatography”,Anal. Chim. Acta,122, 1(1980).
Streltzov, L. V., Zelvensky, V. Yu., Volkov, S. A. and Sakodynsky, K. I., “Plate Model of Chromatographic Column under Non-Linear Adsorption Isotherm”,Teoret. Osn. Khim. Tekhnol.,8, 770 (1974).
vanDeemter, J. J., Zuiderweg, F. J. and Klinkenberg, A., “Longitudinal Diffusion and Resistance to Mass Transfer as Causes of Nonlinearity in Chromatography”,Chem. Eng. Sci.,5. 271 (1956).
Vink, H., “Theory of Partition Chromatography”,J. Chromatogr.,15, 488(1964).
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Row, K.H., Larin, A.V. A chromatographic theory based on the concept of a layer of equilibrium adsorption. Korean J. Chem. Eng. 12, 442–447 (1995). https://doi.org/10.1007/BF02705808
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DOI: https://doi.org/10.1007/BF02705808