Vapor-liquid equilibrium for binary systems ethanol (1) and water (2) and methyl acetate (1) and ethanol (2): Thermodynamic consistency and data prediction / Equilíbrio líquido-vapor para os sistemas binários etanol (1) e água (2) e metil acetato (1) e etanol (2): Consistência termodinâmica e predição de dados

Talita Kênya Oliveira Costa, Leonete Cristina de Araújo Ferreira, Cláudia Bezerra Silva, Beatriz de Azevedo, Talison Kennedy Oliveira Costa, Raquel Revoredo Pinheiro de Souza


Ethanol or ethyl alcohol is an organic substance obtained from fermentation of sugars, hydration of ethylene or reduction of acetaldehyde. It consists of two carbon atoms, five hydrogen atoms and one hydroxyl group. It is the main biofuel used in the world, it is a renewable energy source and alternative to fossil fuels. In Brazil in 1975 was launched by the Federal Government the National Alcohol Program to combat the rampant use of oil and encourage the planting of sugar cane in the country. Given the importance of the use of ethanol, it is extremely important to know its thermodynamic properties for process optimization making them more energy efficient, as well as for the design of new industrial plants and equipment for the various processes. This work has as objective the study of Vapor-Liquid Equilibrium (VLE) of binary systems with ethanol, being the first ethanol (1) - water (2) and the second methyl acetate (1) + ethanol (2). To verify the thermodynamic consistency test of the data, the area test was applied, tested in the computational routine consist.exe and a data prediction was simulated in SPECS. The tests provide results of data consistency as well as the predator or VLE behavior of the binary systems studied for high pressure and temperature situations.


Ethanol, Biofuel, Thermodynamic properties.

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