Prediction of Infinite Dilution Volatilities of Aroma Compounds in Water |
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| Authors: | EC Voutsas CI Andreou DG Theodorou DP Tassios |
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| Affiliation: | Authors are with the Laboratory of Thermodynamics and Transport Phenomena, Dept. of Chemical Engineering, National Technical Univ. of Athens, 9 Heroon Polytechniou St., Zographou Campus, 15780 Athens, Greece. Direct correspondence to Epaminondas C. Voutsas (E-mail: ). |
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| Abstract: | ABSTRACT: The prediction of infinite dilution volatilities (Henry's law constants) of aroma compounds is examined. At 25 °C, the Bond Contribution model is recommended. At other temperatures where the Bond Contribution model cannot be used, the Kow-UNIFAC group contribution model, coupled with either experimental or predicted by the Antoine-Grain model vapor pressure values, provides estimates only of the volatilities with errors in the range of 20% to 40%. Finally, the effect of a cosolvent (ethanol) on the infinite dilution volatilities of some aroma compounds is examined. |
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| Keywords: | aroma compounds volatility activity coefficient Henry's law constant UNIFAC Bond Contribution |
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