Thermodynamic Behavior of the Phase Equilibrium of Ethyl Acetate plus Ethanol plus Water Systems at Atmospheric Pressure: Experiment and Modeling

Autor(es)

Robles, Pedro A. ^[1] ; Lourenco, I, Natalia ; Igarashi, Edson M. S. ^[2] ; Sousa, Marivone N. ^[2] ; Arce, Pedro F. ^[2]

Afiliação do(s) autor(es)

^[1] Pontificia Univ Catolica Valparaiso, Escuela Ingn Quim, Valparaiso 2340000 - Chile

^[2] Lourenco, Natalia, I, Univ Sao Paulo, Engn Sch Lorena, BR-12602810 Lorena, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF CHEMICAL AND ENGINEERING DATA; v. 65, n. 4, p. 1402-1410, APR 2020.
• Citações Web of Science: 0

Resumo

The fluid phase behavior of liquid-liquid equilibrium (LLE) is an important piece of the separation processes in chemical engineering, mainly for solvent extraction or liquid-liquid extraction. In this work, experimental studies were carried out in the LLE of a ternary system composed of water, ethanol, and ethyl acetate at four different temperatures at atmospheric pressure. A two-step procedure was done for each temperature in the experimental stage. First, the construction of the binodal curve of the ternary system, and second, the determination of the tie-lines (LLE). For the tie-lines, because the configuration of the binodal curve and the refractive index of the liquid phases at equilibrium were known, their compositions were determined. The LLE experimental data were evaluated through the method developed by Marcilla and collaborators. The gamma-gamma approach was used for the modeling, by using the analytical solutions of groups (ASOG), the nonrandom two-liquids (NRTL), and the universal quasichemical (UNIQUAC) models. Results of the thermodynamic modeling were compared with the experimental values, and the deviations of the compositions of the lighter phase were very low for the thermodynamic models used. (AU)

• Processo FAPESP: 15/05155-8 - Modelagem de propriedades termofísicas de fluidos puros (líquidos iônicos e compostos presentes em produtos naturais) e comportamento termodinâmico do equilíbrio de fases de misturas
• Beneficiário: Pedro Felipe Arce Castillo
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/03739-0 - Medição experimental, correlação e predição do comportamento de fases de fluidos de sistemas contendo líquidos iônicos (imidazôlio) e co2 supercrítico.
• Beneficiário: Pedro Felipe Arce Castillo
• Modalidade de apoio: Auxílio à Pesquisa - Regular