Experimental Study of the Salt Effect in Vapor/Liquid Equilibria Using Headspace Gas Chromatography
The salt effect on vapor/liquid equilibrium for an ethanol/water system was studied at 70 °C using the Headspace Gas Chromatography technique. The azeotropic point of the system was eliminated in the presence of the salts studied. All the salts investigated in this work exhibited a salting out effec...
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Published in | Chemical engineering & technology Vol. 22; no. 9; pp. 761 - 765 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
WILEY-VCH Verlag
01.09.1999
WILEY‐VCH Verlag Wiley-VCH |
Subjects | |
Online Access | Get full text |
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Summary: | The salt effect on vapor/liquid equilibrium for an ethanol/water system was studied at 70 °C using the Headspace Gas Chromatography technique. The azeotropic point of the system was eliminated in the presence of the salts studied. All the salts investigated in this work exhibited a salting out effect which followed the order of NH4Cl > NaCl > CaCl2 and which increased with increasing salt concentration. Good agreement with Furter's equation was observed for the experimental data with unsaturated NaCl salt. The salt effect parameter, determined from Furter's equation, was found to be a function of the liquid concentration.
Reported are results on the further investigation of the effect of adding inorganic salts on the separation of ethanol/water using the Headspace Gas Chromatography (HSGC) technique. The use of HSGC in studying VLE of binary mixtures is simple, accurate, fast, and time‐saving, since equilibrium and sample analysis are done in the same apparatus. Using NH4Cl, NaCl, and CaCl2, good agreement with Furter's equation was observed. |
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Bibliography: | ark:/67375/WNG-20G8QMX8-4 istex:936F4F5FFBC2EE4FA6EC0DD1FCACC5CED34C652B ArticleID:CEAT761 |
ISSN: | 0930-7516 1521-4125 |
DOI: | 10.1002/(SICI)1521-4125(199909)22:9<761::AID-CEAT761>3.0.CO;2-U |