Vapor-liquid equilibrium for the {R-OH plus R-palmitate} systems at 50.3 and 101.3 kPa

Autor(es)

V. Freire, Nian ; Nunes, Matheus C. ; Arce, Pedro F.

• Tipo de documento: Artigo Científico
• Fonte: FUEL; v. 333, p. 10-pg., 2023-02-01.

Resumo

Fossil sources of energy become focus of many debates due to the pollution caused by them. In this scenario, renewable fuels, as biodiesel, are studied to improve their production efficiency and become more competitive with fossil fuels and even substitute them. Biodiesel, produced by the transesterification reaction, is constituted by a mixture of fatty acid esters and needs to be separated from its reactional solution in order to be commer-cialized. To improve the separation processes, the thermodynamic behavior of the mixtures involving compo-nents of the biodiesel needs to be known. Aiming this, the vapor-liquid equilibrium (VLE) of the methanol + methyl palmitate and ethanol + ethyl palmitate systems was analyzed at 50.3 and 101.3 kPa and the experi-mental data were submitted to a thermodynamic consistency test and thermodynamic modeling with the Peng-Robinson (PR), Group Contribution Volume Translated Peng-Robinson (GC-VT-PR) and the Perturbed Chain -Statistical Associating Fluid Theory (PC-SAFT) equations of state. Experimental data were considered thermo-dynamically consistent, and the modeling showed good results in terms of the lowest relative deviations of temperature and vapor mole fraction obtained with the GC-VT-PR and PC-SAFT models. (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: 19/18185-3 - Medições experimentais, consistência e modelagem termodinâmica do equilíbrio líquido-vapor do sistema etanol + palmitato de etila (1,0 ATM)
• Beneficiário: Matheus Cardoso Nunes
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• 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