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Schlagwörter:
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Zusammenfassung:
Subject of this work is the application of discrete single component adsorption equilibrium data to directly predict: a) competitive adsorption isotherms using the Ideal Adsorbed Solution Theory (IAST) [1], and b) the dynamics of concentration profiles in fixed-bed adsorbers.
The work is based on a study of single component adsorption [2], considering here binary mixtures and single component isotherms with inflection points in their courses. An experimental system already studied extensively in [3] was re-analyzed both experimentally and theoretically. A recently developed approach to solve the IAST equations [4] was extended to process just a few discrete single component equilibrium measurements as input to estimate multicomponent adsorption equilibria using extrapolation techniques. Then the incorporation of mixture isotherms generated in this way into a conventional fixed-bed adsorber model is demonstrated. The concept and the tools developed offer a rapid estimation of front propagation dynamics. Results of a systematic critical analysis reveal also limits of the approach.
References
[1] Myers AL, Prausnitz JM. AIChE Journal. 1965;11:121-127.
[2] Haghpanah R, Rajendran A, Farooq S, Karimi IA, Amanullah M. Industrial and Engineering Chemistry Research. 2012;51:14834-14844.
[3] Diack M, Guiochon G. Langmuir. 1992;8:1587-1593.
[4] Rubiera Landa HO, Flockerzi D, Seidel-Morgenstern A. AIChE Journal. 2013;59(4):1263-1277.
