Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/55573
Type: Artigo de periódico
Title: Bioethanol production optimization: A thermodynamic analysis
Author: Alvarez, VH
Rivera, EC
Costa, AC
Maciel, R
Maciel, MRW
Aznar, M
Abstract: 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.
Subject: bioreactors
fermentation
phase equilibria
Predictive Soave-Redlich-Kwong
Country: EUA
Editor: Humana Press Inc
Rights: fechado
Identifier DOI: 10.1007/s12010-008-8132-4
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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