Multi-scale study of the integrated use of the carbohydrate fractions of sugarcane bagasse for ethanol and xylitol production

Autor(es)

Antunes, Felipe A. F. ^[1] ; Thome, Lucas C. ^[1] ; Santos, Julio C. ^[1] ; Ingle, Avinash P. ^[1] ; Costa, Cassiano B. ^[2] ; Dos Anjos, Virgilio ^[2] ; Bell, V, Maria J. ; Rosa, Carlos A. ^[3] ; Da Silva, Silvio S. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Engn Sch Lorena, Dept Biotechnol, Area 1, Estr Municipal Campinho S-N, BR-12602810 Lorena, SP - Brazil

^[2] V, Univ Fed Juiz de Fora, Dept Phys, Mat Engn & Spect Grp, Univ Campus SN, BR-36036330 Juiz De Fora, MG - Brazil

^[3] Univ Fed Minas Gerais, Inst Biol Sci, Av Pres Antonio Carlos 6627, BR-31270901 Belo Horizonte, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: RENEWABLE ENERGY; v. 163, p. 1343-1355, JAN 2021.
• Citações Web of Science: 4

Resumo

A multi-scale study of sugarcane bagasse (SB) pretreatments and integrated developments for use of its carbohydrates portions for ethanol and xylitol production, are presented. In a first approach, after SB acid hydrolysis, hemicellulosic ethanol production was investigated, verifying ethanol yield of 0.31 g/g and volumetric productivity (Q(P)) of 0.1 g/L.h. Xylitol production was also studied, showing xylitol yield and Q(P) of 0.61 g/g and 0.38 g/L.h, respectively. Thus, remaining cellulignin from acid pretreatment was submitted to alkaline hydrolysis followed by Semi-Simultaneous Saccharification and Co-fermentation in sequential processes to ethanol production, by using mixture of SB hemicellulosic and enzymatic hydrolysate as carbon source, verifying Q(P) of 0.6 g/L.h. Moreover, a biomass multi-scale study was conducted by analysis of MEV, X-Ray, FTIR and Ramman Spectroscopy, verifying clear changes in SB structure along each pretreatment. These novel approaches indicated the potential of these integrated use of SB carbohydrates portion for bioproducts obtaining from SB in sustainable processes. (C) 2020 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 14/27055-2 - Intensificação de processos em biorrefinarias de lignocelulósicos integrando etapas de produção de etanol e xilitol a partir de bagaço de cana-de-açúcar em reator de leito fluidizado
• Beneficiário: Felipe Antonio Fernandes Antunes
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 16/10636-8 - Da fábrica celular à biorrefinaria integrada Biodiesel-Bioetanol: uma abordagem sistêmica aplicada a problemas complexos em micro e macroescalas
• Beneficiário: Roberto de Campos Giordano
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático
• Processo FAPESP: 16/22086-2 - Desenvolvimento de novos métodos nanotecnológicos aplicados ao pré-tratamento de biomassa lignocelulósica
• Beneficiário: Avinash Prabhakarrao Ingle
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado