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Bioethanol Production From Sugarcane Bagasse Hemicellulose Hydrolysate by Immobilized S. shehatae in a Fluidized Bed Fermenter Under Magnetic Field

Dussán, Kelly J., Justo, Oselys Rodriguez, Perez, Victor Haber, David, Geraldo F., Junior, Euripedes Garcia Silveira, da Silva, Silvio S.
BioEnergy research 2019 v.12 no.2 pp. 338-346
Scheffersomyces, biomass, bioreactors, ethanol, ethanol production, fermentation, fermenters, fluidized beds, hemicellulose, hydrolysates, magnetic fields, sugarcane bagasse
Bioethanol production from sugarcane bagasse hemicellulosic hydrolysate using immobilized Scheffersomyces shehatae on magnetic biosupports in a fluidized bed bioreactor assisted by magnetic field has been studied. Fermentations were carried out in two experimental setups operating in a magnetically stabilized bed mode with transversal and axial magnetic field lines at 8 and 12 kA/m, respectively. The best results were attained when experiments were carried out using a fermenter assisted by axial field whose ethanol/substrate yield and ethanol productivity were 0.15 ± 0.8E-3 g/g and 0.055 ± 0.3E-3 g/gh. These values were 12 and 34%, respectively, higher than those observed in fermentations with transversal field lines (Tukey’s test, p < 0.05). Thus, these results are attractive and can be considered as a technological advance in the bioethanol production from biomass using this unconventional fermentation technology.