Optimization of FeSO4-assisted sulfuric acid hydrolysis for improved sugar yield from sugarcane bagasse

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorIgbojionu, Longinus Ifeanyi-
Autor(es): dc.creatorLaluce, Cecilia-
Autor(es): dc.creatorSilva, João Pedro-
Autor(es): dc.creatorSilva, José Luiz-
Data de aceite: dc.date.accessioned2025-08-21T22:38:27Z-
Data de disponibilização: dc.date.available2025-08-21T22:38:27Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2020-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1089/ind.2020.0020-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/228868-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/228868-
Descrição: dc.descriptionSugarcane bagasse (SB) consists of two major sugar polymers (cellulose and hemicelluloses) connected to lignin. Due to the recalcitrant nature of SB, pretreatment is considered a crucial process step before it can be converted to biomolecules. Raw SB consists of cellulose (40.4 wt%), hemicellulose (23.8wt%), lignin (27.2wt%), ash (3.0wt%) and extractives (4.4wt%). After pretreatment of SB with 8% sodium hydroxide at room temperature, the cellulosic fraction increased to 61.9wt%, while hemicellulose and lignin fraction decreased to 17.1wt% and 10.8 wt%, respectively. Design of experiment was employed to optimize FeSO4-assisted sulfuric acid hydrolysis conditions. The experimental results and predicted values showed strong agreement with high R2 value of 0.995. The highest glucose yield of 90.04% was obtained with 1.5% sulfuric acid, 40mmol/L FeSO4 and 120min, corresponding to predicted value of 88.98%. The optimum glucose yield was attained at high levels of FeSO4 and hydrolysis time, and a low level of sulfuric acid. After validation, the experimental and predicted values of glucose yield were 88.67% and 86.55% respectively, thus confirming the success of the optimization process. Also, the hydrolysates obtained were found to contain low amounts of inhibitory compounds (furfural and 5-hydroxymethylfurfural). Saccharomyces cerevisiae IQAr/ 45-1 efficiently converted the sugar present in the hydrolysate to achieve 82.2% of theoretical ethanol yield. Thus, this process, which involved the use of cheap chemical reagents to overcome SB recalcitrance and liberate fermentable sugars, could potentially support a biorefinery.-
Descrição: dc.descriptionBioenergy Research Institute Institute of Chemistry São Paulo State University Araraquara-
Descrição: dc.descriptionDepartment of Analytical Chemistry Institute of Chemistry São Paulo State University Araraquara-
Descrição: dc.descriptionBioenergy Research Institute Institute of Chemistry São Paulo State University Araraquara-
Descrição: dc.descriptionDepartment of Analytical Chemistry Institute of Chemistry São Paulo State University Araraquara-
Formato: dc.format271-280-
Idioma: dc.languageen-
Relação: dc.relationIndustrial Biotechnology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAcid hydrolysis-
Palavras-chave: dc.subjectDesign of experiment-
Palavras-chave: dc.subjectPretreatment-
Palavras-chave: dc.subjectSaccharomyces cerevisiae IQAr/45-1-
Palavras-chave: dc.subjectSugarcane bagasse-
Título: dc.titleOptimization of FeSO4-assisted sulfuric acid hydrolysis for improved sugar yield from sugarcane bagasse-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.