TY - JOUR
T1 - Ethanol production in a simultaneous saccharification and fermentation process with interconnected reactors employing hydrodynamic cavitation-pretreated sugarcane bagasse as raw material
AU - Terán Hilares, Ruly
AU - Ienny, João Vitor
AU - Marcelino, Paulo Franco
AU - Ahmed, Muhammad Ajaz
AU - Antunes, Felipe A.F.
AU - da Silva, Silvio Silvério
AU - Santos, Júlio César dos
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017
Y1 - 2017
N2 - In this study, sugarcane bagasse (SCB) pretreated with alkali assisted hydrodynamic cavitation (HC) was investigated for simultaneous saccharification and fermentation (SSF) process for bioethanol production in interconnected column reactors using immobilized Scheffersomyces stipitis NRRL-Y7124. Initially, HC was employed for the evaluation of the reagent used in alkaline pretreatment. Alkalis (NaOH, KOH, Na2CO3, Ca(OH)2) and NaOH recycled black liquor (successive batches) were used and their pretreatment effectiveness was assessed considering the solid composition and its enzymatic digestibility. In SSF process using NaOH-HC pretreatment SCB, 62.33% of total carbohydrate fractions were hydrolyzed and 17.26 g/L of ethanol production (0.48 g of ethanol/g of glucose and xylose consumed) was achieved. This proposed scheme of HC-assisted NaOH pretreatment together with our interconnected column reactors showed to be an interesting new approach for biorefineries.
AB - In this study, sugarcane bagasse (SCB) pretreated with alkali assisted hydrodynamic cavitation (HC) was investigated for simultaneous saccharification and fermentation (SSF) process for bioethanol production in interconnected column reactors using immobilized Scheffersomyces stipitis NRRL-Y7124. Initially, HC was employed for the evaluation of the reagent used in alkaline pretreatment. Alkalis (NaOH, KOH, Na2CO3, Ca(OH)2) and NaOH recycled black liquor (successive batches) were used and their pretreatment effectiveness was assessed considering the solid composition and its enzymatic digestibility. In SSF process using NaOH-HC pretreatment SCB, 62.33% of total carbohydrate fractions were hydrolyzed and 17.26 g/L of ethanol production (0.48 g of ethanol/g of glucose and xylose consumed) was achieved. This proposed scheme of HC-assisted NaOH pretreatment together with our interconnected column reactors showed to be an interesting new approach for biorefineries.
KW - Alkaline pretreatment
KW - Hydrodynamic cavitation
KW - Interconnected column reactors
KW - SSF process
KW - Sugarcane bagasse
UR - http://www.scopus.com/inward/record.url?scp=85022189916&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2017.06.159
DO - 10.1016/j.biortech.2017.06.159
M3 - Article
C2 - 28709070
AN - SCOPUS:85022189916
SN - 0960-8524
VL - 243
SP - 652
EP - 659
JO - Bioresource Technology
JF - Bioresource Technology
ER -