Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of temperature on sugarcane ethanol fermentation: Kinetic modeling and validation under very-high-gravity fermentation conditions

Full text
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.
Total Authors: 8
Document type: Journal article
Source: Biochemical Engineering Journal; v. 119, p. 42-51, MAR 15 2017.
Web of Science Citations: 10

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. (AU)

FAPESP's process: 16/01785-0 - Butanol production from eucalyptus wood: effect of glycerol on in situ detoxification of lignocellulose-derived microbial inhibitors and in silico analysis of the metabolism of Clostridium beijerinckii NCIMB 8052
Grantee:Elmer Alberto Ccopa Rivera
Support Opportunities: Scholarships abroad - Research