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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Viscosities and densities of systems involved in the deterpenation of essential oils by liquid-liquid extraction: New UNIFAC-VISCO parameters

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Author(s):
Florido, Priscila M. [1] ; Andrade, Ivana M. G. [1] ; Capellini, Maria C. [1] ; Carvalho, Fernanda H. [1] ; Aracava, Keila K. [1] ; Koshima, Cristina C. [1] ; Rodrigues, Christianne E. C. [1] ; Goncalves, Cintia B. [1]
Total Authors: 8
Affiliation:
[1] Univ Sao Paulo, Dept Food Engn ZEA FZEA, Separat Engn Lab LES, BR-13635900 Pirassununga, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF CHEMICAL THERMODYNAMICS; v. 72, p. 152-160, MAY 2014.
Web of Science Citations: 11
Abstract

This work reports viscosities and densities, at T = 298.15 K, of the phases formed after deterpenation of bergamot, lemon and mint essential oils, by (liquid + liquid) extraction (LLE). Samples of mixtures containing the main components of each essential oil (terpenes and oxygenated compounds), plus ethanol and water, were obtained from studies of phase equilibrium performed previously by our research group. Experimental viscosities were also correlated to the UNIFAC VISCO model, based on the group contribution method. Correlations were accomplished using two approaches: in the first one, functional groups already described by previous studies in the literature and new ones obtained in this work were considered, providing a global average relative deviation (ARD) equal to 1.70%; in a second approach, all functional groups were fitted to our experimental data, which provided a global average relative deviation equal to 0.68%. The predictive capability of the UNIFAC-VISCO were tested for systems involved in the deterpenation of eucalyptus essential oil, giving ARD values of (3.56 and 1.83)%, for parameters from first and second approach, respectively. These results indicate that, for more accurate calculation of viscosities, it is important to consider the particularities and the complexity of each system. (C) 2013 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 09/07910-7 - Physical properties of systems composed by essential oils and alcoholic solvents: experimental data, modelling and prediction
Grantee:Ivana Morais Geremias de Andrade
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 08/07326-0 - Deterpenation of lemon and bergamot peel oils: Experimental Data and Modeling of Liquid-liquid Equilibria
Grantee:Cristina Chiyoda Koshima
Support Opportunities: Scholarships in Brazil - Master
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: 10/20789-0 - 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: 12/23203-1 - Viscosities and densities of systems of interest to the oil industry and biodiesel production: experimental data, modeling and prediction
Grantee:Cintia Bernardo Gonçalves
Support Opportunities: Regular Research Grants
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