PD Dr. habil. Monika Johannsen

Eißendorfer Str. 38, Building O, Room 1.012

Telephone +49 40 42878-4260

E-Mail: PD Dr. habil. Monika Johannsen.


Education

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


Publications

[135533]
Title: Solubilities and adsorption equilibria of ß-carotene in super- and subcritical fluids
Written by: Chuang, M.-H., Johannsen, M.
in: Journal of Chemical and Engineering Data 2011
Volume: 56 Number:
on pages: 1770-1777
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Publisher: American Chemical Society
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Institution: Hamburg University of Technology, Eissendorfer Strasse 38, D-21073 Hamburg, Germany
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DOI: 10.1021/je100229f
URL: https://pubs.acs.org/doi/full/10.1021/je100229f
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[doi] [www] [BibTex]

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Abstract: A systematic investigation of solubility and adsorption equilibria of ?-carotene in carbon dioxide and propane, respectively, at elevated pressures was carried out. Investigated at (303, 313, and 323) K and over a pressure range from (3.2 to 13.4) MPa, the solubility of ?-carotene in propane was in the range of (110 to 450) mg·kg?1 propane and approximately 2 orders of magnitude higher than that in supercritical carbon dioxide. Adsorption equilibria of ?-carotene in carbon dioxide with a modifier and in propane were studied on nonpolar chromatographic adsorbents. Concerning adsorption equilibria of ?-carotene in carbon dioxide with 2-propanol as a modifier, the loading decreases with increasing modifier content and increasing pressure. Regarding the adsorption equilibrium of ?-carotene in propane, the loading achieved is much lower than in carbon dioxide due to the higher solubility of ?-carotene in propane.