Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) Analysis of methanol extraction from aqueous solution by n-hexane: Equilibrium diagrams as a function of temperature
Autor Iglesias, M.; Gonzalez-Olmos, R.; Salvatierra, D.; Resa, J.M.;
Journal / Serie Journal of Molecular Liquids
Erscheinungsjahr 2007
Department TUCHEM;
Band/Volume 130
Heft 1-3
Sprache englisch;
Abstract This paper contains the results of a new experimental study of liquid-liquid equilibrium (LLE) as a function of temperature for the ternary mixture n-hexane +methanol+ water under atmospheric conditions. The computed coexistence curves were very asymmetrical with respect to n-alkane+water composition at low operation temperature. A comparative analysis was performed by application of group contribution methods to predict the experimental equilibria behaviour of this ternary mixture. The experimental tie lines data were correlated to test consistency with the Othmer-Tobias equation. The obtained results point out the strong interaction by hydrogen bonds forming the so-called iceberg clusters of hydroxylated molecules at low concentration of n-hexane, a slight influence of temperature being observed. As a result of this intense interaction, sharp separations of n-hexane+ methanol mixtures by extraction are possible at low temperature and small quantities of solvent. Extraction process simulation confirms n-hexane as an adequate medium for diluted methanol concentration. (C) 2006 Elsevier B.V. All rights reserved
ID 1899
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=1899
Iglesias, M., Gonzalez-Olmos, R., Salvatierra, D., Resa, J.M. (2007):
Analysis of methanol extraction from aqueous solution by n-hexane: Equilibrium diagrams as a function of temperature
J. Mol. Liq. 130 (1-3), 52 - 58