Fractionation of sugarcane bagasse using hydrothermal and advanced oxidative pretreatments for bioethanol and biogas production in lignocellulose biorefineries.

dc.contributor.authorBittencourt, Gustavo Amaro
dc.contributor.authorBarreto, Elisa da Silva
dc.contributor.authorBrandão, Rogélio Lopes
dc.contributor.authorBaeta, Bruno Eduardo Lobo
dc.contributor.authorGurgel, Leandro Vinícius Alves
dc.date.accessioned2020-05-22T17:06:35Z
dc.date.available2020-05-22T17:06:35Z
dc.date.issued2019
dc.description.abstractThe 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.pt_BR
dc.identifier.citationBITTENCOURT, 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.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.biortech.2019.121963pt_BR
dc.identifier.issn0960-8524
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/12248
dc.identifier.uri2https://www.sciencedirect.com/science/article/pii/S0960852419311939pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectAdvanced oxidative pretreatmentpt_BR
dc.subjectSecond - generation ethanolpt_BR
dc.subjectFermentationpt_BR
dc.subjectBiogaspt_BR
dc.titleFractionation of sugarcane bagasse using hydrothermal and advanced oxidative pretreatments for bioethanol and biogas production in lignocellulose biorefineries.pt_BR
dc.typeArtigo publicado em periodicopt_BR

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