Journal
BIORESOURCE TECHNOLOGY
Volume 243, Issue -, Pages 652-659Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.06.159
Keywords
Hydrodynamic cavitation; Alkaline pretreatment; Sugarcane bagasse; Interconnected column reactors; SSF process
Funding
- Consejo Nacional de Ciencia, Tecnologia e Innovacion Tecnologica (CONCyTEC- Peru) [219-2014]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq-Brazil) [449609/2014-6]
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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. (C) 2017 Elsevier Ltd. All rights reserved.
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