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

A differential evolution approach to estimate parameters in a temperature-dependent kinetic model for second generation ethanol production under high cell density with Spathaspora passalidarum

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Biazi, L. E. [1] ; Martinez-Jimenez, F. D. [1, 2] ; Bonan, C. I. D. G. [1] ; Soares, L. B. [3] ; Morais, E. R. [2] ; Ienczak, J. L. [3] ; Costa, A. C. [1]
Total Authors: 7
[1] Univ Estadual Campinas, UNICAMP, Fac Chem Engn, Av Albert Einstein 500, BR-13083852 Campinas, SP - Brazil
[2] Brazilian Biorenewables Natl Lab LNBR, Rua Giuseppe Maximo Scolfaro 10-000, BR-13083970 Campinas, SP - Brazil
[3] Santa Catarina Fed Univ, Chem Engn & Food Engn Dept, BR-88040900 Florianopolis, SC - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Biochemical Engineering Journal; v. 161, SEP 15 2020.
Web of Science Citations: 0

An unstructured-unsegregated temperature-dependent kinetic model was developed and validated to describe ethanol fermentation in a mixture of xylose and glucose for the nonconventional yeast Spathaspora passalidarum NRRL Y-27907 under high cell density in the temperature range of 26-32 degrees C. The kinetic model consisted of 13 equations and 16 kinetic parameters, describing cell growth, individual xylose and glucose uptake and product formation. Global parametric estimation was executed through a differential evolution algorithm. Temperature-dependent parameters were identified and adjusted to Arrhenius-type equations as a function of temperature. The overall r(2) of the process calibration and validation were 0.972 and 0.959, respectively, indicating that the model satisfactorily described the process in the temperature range investigated. Furthermore, using a 3D projection of the model to simulate ethanol production, it was concluded that temperatures between 30 and 32 degrees C resulted in the highest productivities. (AU)

FAPESP's process: 15/20630-4 - Biorefinery development integrated to a bioethanol sugar cane plant with zero CO2 emission: routes to convert renewable resources to bio-products and bio-electricity
Grantee:Rubens Maciel Filho
Support type: Research Projects - Thematic Grants
FAPESP's process: 16/14567-0 - Mathematical modeling of second generation bioethanol production with cell recycle by using the microorganisms Scheffersomyces stipitis and Spathaspora passalidarum
Grantee:Luiz Eduardo Biazi
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 17/04997-0 - Scheffersomyces stipitis and Spathaspora passalidarum wild type yeast assessment for second generation bioethanol production from bagasse sugarcarne hydrolyzates containing xylose and glucose
Grantee:Jaciane Lutz Ienczak
Support type: Regular Research Grants