Artículos de revistas
Bioethanol production optimization: A thermodynamic analysis
Registro en:
Applied Biochemistry And Biotechnology. Humana Press Inc, v. 148, n. 41699, n. 141, n. 149, 2008.
0273-2289
WOS:000255057700013
10.1007/s12010-008-8132-4
Autor
Alvarez, VH
Rivera, EC
Costa, AC
Maciel, R
Maciel, MRW
Aznar, M
Institución
Resumen
In this work, the phase equilibrium of binary mixtures for bioethanol production by continuous extractive process was studied. The process is composed of four interlinked units: fermentor, centrifuge, cell treatment unit, and flash vessel (ethanol-congener separation unit). A proposal for modeling the vapor-liquid equilibrium in binary mixtures found in the flash vessel has been considered. This approach uses the Predictive Soave-Redlich-Kwong equation of state, with original and modified molecular parameters. The congeners considered were acetic acid, acetaldehyde, furfural, methanol, and 1-pentanol. The results show that the introduction of new molecular parameters r and q in the UNIFAC model gives more accurate predictions for the concentration of the congener in the gas phase for binary and ternary systems. 148 41699 141 149