Fractionation of orange essential oil using liquid-liquid extraction: Equilibrium data for model and real systems at 298.2 K

Autor(es)

Goncalves, Daniel ^[1] ; Teschke, Martin E. E. ^[1] ; Koshima, Cristina C. ^[1] ; Goncalves, Cintia B. ^[1] ; Oliveira, Alessandra L. ^[2] ; Rodrigues, Christianne E. C. ^[1]

Afiliação do(s) autor(es)

^[1] Dept Food Engn ZEA FZEA, Separat Engn Lab LES, Sao Paulo - Brazil

^[2] Univ Sao Paulo, Dept Food Engn ZEA FZEA, Nat Prod & High Pressure Technol Lab LTAPPN, BR-13635900 Pirassununga, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Fluid Phase Equilibria; v. 399, p. 87-97, AUG 15 2015.
• Citações Web of Science: 16

Resumo

Essential oils have many industrial applications and are basically composed of terpene hydrocarbons and oxygenated compounds. To improve their stability, sensorial quality, flavoring capacity and, consequently, their commercial value, the removal of hydrocarbon compounds is achieved by a fractionation process that can be performed by liquid-liquid extraction. In this work, a phase equilibrium study of real systems composed of crude orange essential oil and hydroalcoholic solvents (ethanol and water mixtures) was conducted and UNIQUAC and NRTL binary interaction parameters available in the literature were tested without success for the description of phase compositions. To obtain reliable parameters that provide a good description of the phase composition and can be used for computational simulation, liquid-liquid equilibrium data for model systems composed of limonene, linalool, ethanol and water at 298.2 K were determined and used to adjust new binary interaction parameters of UNIQUAC and NRTL thermodynamic models. Concerning the physical-chemical behavior of the system, the increase in the water content of solvent was observed to promote a decrease in the migration of oxygenated compounds to the solvent-rich phase and in the mutual solubility of the compounds. The increase in the composition of the oxygenated compounds in the system resulted in an increased solubility of these oxygenated compounds and a consequent decreased solvent selectivity. The new set of parameters provided a satisfactory representation of the experimental data, with global deviations of up to a 0.0031 mass fraction in the prediction process, which indicates that these parameters may be very useful in the optimization of the fractionation process by computational simulation. (c) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 13/11150-3 - Fracionamento de óleos essenciais cítricos utilizando etanol com diferentes níveis de hidratação como solventes: equilíbrio de fases, propriedades físicas e extração em equipamento contínuo
• Beneficiário: Daniel Gonçalves
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 10/13286-1 - Estudo do Processo de Desterpenação de Óleos Essenciais Cítricos: Dados de Equilíbrio Líquido-líquido e Extração em Coluna de Discos Rotativos Perfurados
• Beneficiário: Daniel Gonçalves
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 11/02476-7 - Desterpenação de óleos essenciais por extração líquido-líquido: estudo experimental e simulação do processo
• Beneficiário: Christianne Elisabete da Costa Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 10/20789-0 - Fracionamento de óleos essenciais por extração líquido-líquido em coluna de discos rotativos perfurados: estudo experimental e simulação do processo
• Beneficiário: Cristina Chiyoda Koshima
• Modalidade de apoio: Bolsas no Brasil - Doutorado