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Gas Extraction pp 175-178 | Cite as

The Separation of Solvent and Dissolved Substances: Methods for Precipitation

  • Gerd Brunner
Part of the Topics in Physical Chemistry book series (TOPPHYSCHEM, volume 4)

Abstract

The separation of dissolved substances from the solvent in gas extraction is a necessary operation. Any suitable separation process can be employed, but processes are pRefserred which introduce no additional substances with only small changes in conditions of state. Additional fractionation of the extract during removal of the solvent from the extract, e.g., by stepwise reducing solvent power of the solvent, is a further aspect.

Keywords

Active Charcoal Solvent Power Additional Fractionation Extract Compound Dissolve Substance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    Gehrig M(1986) Verfahren zur Gewinnung von Coffein aus verflüssigten oder überkritischen Gasen. Offenlegungsschrift DE 3443390 A1Google Scholar
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    Hoffmann R, Künstle K, Brunner G(1984) Production of liquid fuels and electricity from oil shale by hydrogen retorting. Preprints Int Symp High Pressure Chemical Engineering, Erlangen, pp 155 – 161Google Scholar
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    Perrut M (1989) High performance extract solvent-separators. In: Perrut M (ed) Proceedings of the International Symposium on Supercritical Fluids, Vol 2 , pp 627–632Google Scholar
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    Sarrade S, Rios GM, Veyre R, Soria R (1994) Supercritical CO2-extraction coupled with nanofiltration separation, interest and preliminary studies. In: Kiran E, Levelt-Sengers JMH (eds) Supercritical Fluids — Fundamentals for Application. NATO ASI, KluwerGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1994

Authors and Affiliations

  • Gerd Brunner
    • 1
  1. 1.Arbeitsbereich Verfahrenstechnik IITechnische Universität Hamburg-HarburgHamburgDeutschland

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