Liquid-liquid equilibrium data for the system limonene plus carvone plus ethanol + water at 298.2 K

Author(s)

Oliveira, Cassia M. ^[1] ; Koshima, Cristina C. ^[1] ; Capellini, Maria C. ^[1] ; Carvalho, Fernanda H. ^[1] ; Aracava, Keila K. ^[1] ; Goncalves, Cintia B. ^[1] ; Rodrigues, Christianne E. C. ^[1]

Affiliation

^[1] Univ Sao Paulo, Dept Food Engn ZEA FZEA, Separat Engn Lab LES, BR-13635900 Pirassununga, SP - Brazil

• Document type: Journal article
• Source: Fluid Phase Equilibria; v. 360, p. 233-238, DEC 25 2013.
• Web of Science Citations: 16

Abstract

This paper presents experimental liquid-liquid equilibrium data at 298.2 K for systems composed of limonene, carvone and hydrous ethanol with five different levels of water in the solvent. The experimental data were correlated using the NRTL and UNIQUAC models, and both thermodynamic equations provided good descriptive quality. In the parameter correlation procedure, mean deviations between the calculated and experimental data of less than 0.0037 were obtained for systems with major contents of water in the solvent. With respect to systems that contained lower concentrations of water in the solvent, we predicted the phase compositions by considering the previously obtained set of parameters. The experimental results showed that as the water content in the solvent phase was increased, the values of the limonene and carvone distribution coefficients decreased. However, the oxygenated compound always exhibited a greater distribution coefficient value. The addition of water to the system also influenced the phase splitting region, and the increased water content in the solvent is responsible for making deterpenation of the essential oil using ethanol a feasible process. (C) 2013 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 11/02476-7 - Essential oils deterpenation by solvent extraction: experimental study and process simulation
• Grantee: Christianne Elisabete da Costa Rodrigues
• Support Opportunities: Regular Research Grants
• FAPESP's process: 10/03235-0 - LIQUID-LIQUID EQUILIBRIA THERMODYNAMIC MODELING OF SYSTEMS COMPOSED BY LIMONENE, CARVONE, ETHANOL AND WATER
• Grantee: Cássia Maria de Oliveira
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 10/20789-0 - Deterpenation of essential oils by liquid-liquid extraction using a perforated rotating disc column: experimental study and process simulation
• Grantee: Cristina Chiyoda Koshima
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 09/17271-1 - Liquid-liquid equilibria study for systems composed by components of origanum essential oil and alcoholic solvent
• Grantee: Maria Carolina Capellini
• Support Opportunities: Scholarships in Brazil - Scientific Initiation