title: Steam pretreatment of Saccharum officinarum L. bagasse by adding of impregnating agents for advanced bioethanol production.
abstract: The main byproduct of the sugarcane industry, Saccharum officinarum L. bagasse (sugarcane bagasse, SCB), is widely used as lignocellulose biomass for bio-ethanol (EtOH) production. In this research study, SCB was pretreated by steam explosion (SE) method using two different impregnating agents: sulfur dioxide (SD) and hydrogen peroxide (HP). As matter of fact, the use of impregnating agents improves the performance of SE method, increasing the concentrations of fermentable sugars after enzymatic saccharification, and decreasing the inhibitor compounds produced during the steam pretreatment step. The aim of this study was to investigate and compare the use of the two impregnating agents in various SE-conditions in order to optimize pretreatment parameters. For every pretreatment condition, it has been evaluated: concentration of fermentable sugars, glucose and xylose yields, and the effects of the inhibitor compounds on enzymatic hydrolysis step. The obtained results allow to improve the efficiency of the whole process of bio-EtOH synthesis enhancing the amount of fermentable sugars produced and the eco-sustainability of the whole process. Indeed, the optimization of steam pretreatment leads to a reduction of energy requirements and to a lower environmental impact.
authors: Department of Computer Engineering, Modeling, Electronics, and Systems Science (DIMES), University of Calabria, via P. Bucci, 87036 Arcavacata di Rende, CS, Italy.
authors: A
authors: A
authors: Verardi
authors: ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, S.S. 106 Ionica, km 419+500, 75026 Rotondella, MT, Italy.
authors: A
authors: A
authors: Blasi
authors: ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, S.S. 106 Ionica, km 419+500, 75026 Rotondella, MT, Italy.
authors: I
authors: I
authors: De Bari
authors: Department of Computer Engineering, Modeling, Electronics, and Systems Science (DIMES), University of Calabria, via P. Bucci, 87036 Arcavacata di Rende, CS, Italy. Electronic address: vincenza.calabro@unical.it.
authors: V
authors: V
authors: Calabrò
mesh_terms: D056804:Biofuels; D001709:Biotechnology / Q000379:methods*; D002482:Cellulose; D000431:Ethanol; D005285:Fermentation; D005947:Glucose / Q000378:metabolism*; D006861:Hydrogen Peroxide / Q000494:pharmacology; D006867:Hydrolases / Q000378:metabolism; D006868:Hydrolysis; D031786:Saccharum / Q000187:drug effects / Q000378:metabolism*; D013227:Steam; D013458:Sulfur Dioxide / Q000494:pharmacology; D014994:Xylose / Q000378:metabolism*
chemical_list: D056804:Biofuels; D013227:Steam; D013458:Sulfur Dioxide; D000431:Ethanol; D002482:Cellulose; C027433:bagasse; D014994:Xylose; D006861:Hydrogen Peroxide; D006867:Hydrolases; D005947:Glucose
keywords: Enzymatic hydrolysis; Hydrogen peroxide; Steam explosion; Sugar cane bagasse; Sulfur dioxide