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- W260486100 abstract "Ethanol and biogas are renewable fuels that can be produced from lignocellulosic biomass, through a process of hydrolysis and fermentation, or by anaerobic digestion, respectively. Sugarcane bagasse is known as a potential substrate for the production of these biofuels, since it has a high content in carbohydrates and it is an abundant residue in the sugar producing industries. One of the crucial steps in the process of conversion of sugarcane bagasse to biofuels is its pretreatment, necessary due to its complex lignocellulosic structure. This pretreatment is performed with the purpose of improving enzyme accessibility to polysaccharides. In the present work, an adapted steam explosion pretreatment has been tested and applied to sugarcane bagasse, at a temperature of 185oC with different treatment conditions (ratio biomass/water). The pretreated bagasse was subsequently subjected to an enzymatic hydrolysis procedure (cellulase complex), after which the hydrolyzate was analyzed for quantification of reducing sugars using the 3,5-dinitrosalicylic acid method (DNS). The results showed that this treatment doesn’t enhance the accessibility of enzymes to the polysaccharides. Compared to non-pretreated biomass, the yield of reducing sugar obtained from the hydrolysis of pretreated biomass was significantly lowerabout 60%. Using data available in the literature, which regards a common steam explosion process, it was possible to show that this pre-treatment allows an improvement of the biogas yield of about 34%. The bioethanol yield obtained from the non-pretreated biomass is 8% of the yield obtained with this pretreatment." @default.
- W260486100 created "2016-06-24" @default.
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- W260486100 date "2014-07-18" @default.
- W260486100 modified "2023-09-27" @default.
- W260486100 title "PRODUÇÃO DE COMBUSTÍVEIS VERDES A PARTIR DE RESÍDUOS AGRO-FLORESTAIS" @default.
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