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Type: Artigo
Title: Effect Of Temperature On Sugarcane Ethanol Fermentation: Kinetic Modeling And Validation Under Very-high-gravity Fermentation Conditions
Author: Rivera
Elmer Ccopa; Yamakawa
Celina K.; Saad
Marcelo B. W.; Atala
Daniel I. P.; Ambrosio
Wesley B.; Bonomi
Antonio; Nolasco Junior
Jonas; Rossell
Carlos E. V.
Abstract: In this work, a mechanistic model is developed to simulate the effect of temperature on Saccharomyces cerevisiae growth and ethanol production of batch fermentations. A wide temperature range is used to estimate the temperature-dependent kinetic parameters of the reaction kinetics. Because multi parameter estimation problems are complex, an optimization-based procedure is used to determine the optimum parameter values. The calculated reaction rates are used to construct a mechanistic fed-batch model. Experimental data from several cycles of very-high-gravity (VHG) ethanol fermentation from sugarcane are used to validate the model. Acceptable predictions are achieved in terms of the residual standard deviation (RSD). In addition, a suitable fermentation temperature profile, nutrient supplementation and micro-aeration during cell treatment are essential factors to obtain a yield of up to 90%, with a productivity of 10.2 g/L h and an ethanol concentration of 120 g/L. (C) 2016 Elsevier B.V. All rights reserved.
Subject: Mathematical Modeling
Parameter Estimation
Vhg Ethanol Fermentation
Editor: Elsevier Science BV
Rights: fechado
Identifier DOI: 10.1016/j.bej.2016.12.002
Date Issue: 2017
Appears in Collections:Unicamp - Artigos e Outros Documentos

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