Bittencourt, Gustavo AmaroBarreto, Elisa da SilvaBrandão, Rogélio LopesBaeta, Bruno Eduardo LoboGurgel, Leandro Vinícius Alves2020-05-222020-05-222019BITTENCOURT, G. A. et al. Fractionation of sugarcane bagasse using hydrothermal and advanced oxidative pretreatments for bioethanol and biogas production in lignocellulose biorefineries. Bioresource Technology, v. 292, p. 121963, nov. 2019. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0960852419311939>. Acesso em: 10 fev. 2020.0960-8524http://www.repositorio.ufop.br/handle/123456789/12248The fractionation of sugarcane bagasse (SB) by hydrothermal pretreatment (HP, autohydrolysis) followed by alkaline extraction (AE) and advanced oxidative pretreatment (AOP) for production of second-generation ethanol and biogas was investigated. The AOP of SB was optimized using a Doehlert design, varying the applied H2O2 load, liquid-to-solid ratio (LSR), and time. The responses evaluated were yield (Y), residual cellulose (RC), delignification (DE), and enzymatic conversion (EC). The AE of SB pretreated by HP led to 61.8% DE (using 0.2 mol L−1 NaOH). This high lignin removal enabled substantial savings of H2O2 in the AOP. The optimized AOP conditions led to 78% Y, 82.2% RC, 42.7% DE, and 88.9% EC (overall glucose yield of 60.9%). Fermentation of the enzymatic hydrolysate with Saccharomyces cerevisiae yielded 190.8 Lethanol tonSB−1. Biogas production by anaerobic digestion of residual liquid streams of the pretreatment steps yielded 27.46 NLCH4 kgSB−1. An energy balance was estimated for the SB fractionation.en-USrestritoAdvanced oxidative pretreatmentSecond - generation ethanolFermentationBiogasArtigo publicado em periodicohttps://www.sciencedirect.com/science/article/pii/S0960852419311939https://doi.org/10.1016/j.biortech.2019.121963