Sugarcane straw as feedstock for 2G ethanol: Evaluation of pretreatments and enzymatic hydrolysis

Autor(es)

Candido, R. G. ^[1] ; Mori, N. R. ^[1] ; Goncalves, A. R. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Escola Engn Lorena, Dept Biotecnol, BR-12602810 Lorena, SP - Brazil

^[2] Univ Estadual Paulista, Inst Pesquisas Bioenergia, Rio Claro, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INDUSTRIAL CROPS AND PRODUCTS; v. 142, DEC 15 2019.
• Citações Web of Science: 4

Resumo

The potential of sugarcane straw (SCS) as feedstock for 2G ethanol production was investigated. Three different pretreatments (hydrothermal, ultrasound and acid) and the enzymatic hydrolysis of SCS were evaluated. Pretreated materials were delignified with NaOH and after that the enzymatic hydrolysis of all materials was conducted. The best conditions for hydrothermal pretreatment removed a massive amount of hemicellulose (about 60%), preserving the most portions of lignin and cellulose. In general, ultrasound pretreatment was not very effective in removing the cell wall components. Acid pretreatment was able to remove high amounts of hemicellulose (77%) and lignin (54%). After NaOH treatment, a low quantity of lignin remained. The enzymatic hydrolysis achieved high conversion for the combinations hydrothermal + NaOH (84%) and acid + NaOH (86%). These results show that hydrothermal and acid pretreatment were more suitable in the process of ethanol obtainment of from SCS. (AU)

• Processo FAPESP: 10/20396-8 - Produção de membranas a partir do bagaço de cana-de-açúcar e sua utilização na detoxificação do hidrolisado hemicelulósico
• Beneficiário: Rafael Garcia Candido
• Modalidade de apoio: Bolsas no Brasil - Doutorado