Adsorption of eicosane and 1,2-hexanediol from supercritical carbon dioxide on activated carbon and chromosorb |
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| Affiliation: | 1. Department of Chemistry, University of North Texas, 1155 Union Circle Drive #305070, Denton, TX 76203, USA;2. Department of Chemistry, University College London, 20 Gordon Street, London WC1H OAJ, UK;1. Department of Engineering and Chemical Sciences, Karlstad University, SE-651 88 Karlstad, Sweden;2. Department of Chemical Engineering, Rzeszów University of Technology, PL-35 959 Rzeszów, Poland |
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| Abstract: | Supercritical adsorption isotherms were measured for eicosane and 1,2-hexanediol on activated carbon and chromosorb 101 at 324.2 K and 11.45 MPa. Adsorption isotherms of both solutes on activated carbon have typical shapes and can be modelled by Langmuir or Freundlich equations. For chromosorb 101 the equilibrium loadings are a linear function of the concentration of the solute in the fluid phase. These results suggest that for chromosorb 101 a partition of the solute between two immiscible phases rather than adsorption occurs. |
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