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  A theoretical study of continuous counter-current chromatography for adsorption isotherms with inflection points

Ballerstein, M., Michaels, D., Seidel-Morgenstern, A., & Weismantel, R. (2010). A theoretical study of continuous counter-current chromatography for adsorption isotherms with inflection points. Computers and Chemical Engineering, 34(4), 447-459. doi:10.1016/j.compchemeng.2009.10.001.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-904A-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-170D-7
Genre: Journal Article

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 Creators:
Ballerstein, Martin1, 2, Author              
Michaels, D.2, Author
Seidel-Morgenstern, A.2, 3, Author              
Weismantel, R.2, Author
Affiliations:
1International Max Planck Research School (IMPRS), Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738143              
2Otto-von-Guericke-Universität Magdeburg, External Organizations, ou_1738156              
3Physical and Chemical Foundations of Process Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society, ou_1738150              

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Free keywords: Continuous counter-current chromatography; inflection points of adsorption isotherms; feasibility analysis; global optimization; convex relaxations
 Abstract: Continuous counter-current chromatographic processes have been increasingly applied in the last years. For chromatographic systems characterized by linear or Langmuir adsorption equilibria, there are nowadays reliable design rules available to decide whether a separation is feasible and which operating parameters should be used. For more complex equilibrium functions, theoretical methods are less developed. More realistic adsorption isotherms are frequently characterized by inflection points in their courses. A flexible model capable to quantify single solute and competitive adsorption isotherms is provided by statistical thermodynamics. In this work, second-order truncations of a statistical model involving inflection points are investigated. The classical scanning technique is used to identify the region of applicable operating parameters. Then an alternative approach is suggested, which verifies the existence and shape of the suitable parameter region by infeasibility certificates. Using the True Moving Bed model, both approaches are compared for different feed concentrations, purity requirements and column efficiencies. Copyright © 2009 Elsevier B.V. All rights reserved. [accessed November 25, 2009]

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Language(s): eng - English
 Dates: 2010
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 437606
DOI: 10.1016/j.compchemeng.2009.10.001
 Degree: -

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Title: Computers and Chemical Engineering
  Other : Comp. Chem. Engng.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford : Pergamon
Pages: - Volume / Issue: 34 (4) Sequence Number: - Start / End Page: 447 - 459 Identifier: ISSN: 0098-1354
CoNE: https://pure.mpg.de/cone/journals/resource/954925466259