PHASE EQUILIBRIA STUDY OF SYSTEMS COMPOSED OF MACAUBA PULP OIL (Acrocomia aculeata), FREE FATTY ACIDS, AND HYDROUS ETHANOL AT 25ºC

Autores

  • Daniel Bastos de Rezende Universidade Federal de Minas Gerais Departamento de Química
  • Maria Helena Caño de Andrade Universidade Federal de Minas Gerais Departamento de Engenharia Química
  • Vânya Márcia Duarte Pasa Universidade Federal de Minas Gerais Departamento de Química

DOI:

https://doi.org/10.18540/jcecvl3iss7pp0986-0994

Palavras-chave:

Liquid-liquid equilibrium, free fatty acids, Acrocomia aculeata, solvent extraction.

Resumo

The deacidification of vegetable oil by liquid-liquid extraction is based on the difference in solubility of the free fatty acids and triacylglycerols in the solvent. In the present study, the determination of the ternary phase diagram of the liquid-liquid equilibrium for a pseudo-ternary mixture of solvent (ethanol and water), neutral oil (triacylglycerols) and free fatty acids was performed. It is important to highlight that the macauba pulp oil sample used did not pass through any kind of treatment such as degumming or neutralization. Therefore, the free fatty acids in the sample are resulted from natural degradation of the macauba oil. Despite of that, the results were similar to those found in other studies with purified macauba oil or other sources of triacylglycerols with the addition of oleic acid. The experimental data were correlated by NRTL model and the global deviation between experimental and calculated concentrations was 2.74%.

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Publicado

2017-09-01

Como Citar

Bastos de Rezende, D., Caño de Andrade, M. H., & Duarte Pasa, V. M. (2017). PHASE EQUILIBRIA STUDY OF SYSTEMS COMPOSED OF MACAUBA PULP OIL (Acrocomia aculeata), FREE FATTY ACIDS, AND HYDROUS ETHANOL AT 25ºC. The Journal of Engineering and Exact Sciences, 3(7), 0986–0994. https://doi.org/10.18540/jcecvl3iss7pp0986-0994

Edição

Seção

Engineering of Separations and Thermodynamics