PD Dr. habil. Monika Johannsen


Eißendorfer Str. 38

21073 Hamburg

Building O, Room 1.012

Phone +49 40 42878 - 4260

Mail PD Dr. habil. Monika Johannsen


Education

  • Chromatographic Separation Processes (Module "Separation Technologies for Life Science")
  • Advanced Separation Processes (Module "High Pressure Chemical Engineering")

Publications

[156150]
Title: Management and Control of Modifier Content in preparative SFC Solvent Cycles.
Written by: Kaemmerer, H., Brunner, G., Johannsen, M.
in: <em>Journal of Supercritical Fluids</em>. (2007).
Volume: <strong>43(2)</strong>. Number:
on pages: 204-213
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Publisher: Elsevier B.V.:
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Institution: Hamburg University of Technology, Eissendorfer Strasse 38, D-21073 Hamburg, Germany
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DOI: 10.1016/j.supflu.2007.02.011
URL: https://www.deepdyve.com/lp/elsevier/management-and-control-of-modifier-content-in-preparative-sfc-solvent-LMJgGpbzK1
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Abstract: The objective of this work was to establish a solvent cycle with a possibility for modifier control in a preparative supercritical fluid chromatography simulated moving bed plant (SFC-SMB). Fourier transform infrared (FTIR) spectroscopy and flame ionization detection (FID) have been investigated for measuring alcohol concentrations in supercritical carbon dioxide. The integration of these in-line techniques into a modifier control schema allowed the operation of a closed loop SFC-SMB cycle. The applicability of the developed control concept for usage of 2-propanol in supercritical carbon dioxide has been verified by an experimental test series involving an eight column SFC-SMB plant. Different process variations have been compared in terms of energy and solvent consumption. Hereby, savings of almost all CO2 and 76% modifier could be achieved.

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