Kinetic insights into the lignocellulosic biomass-based levulinic acid production by a mechanistic model

Autor(es)

Lopes, Emilia Savioli ^[1] ; Rivera, Elmer Ccopa ^{[1, 2]} ; de Jesus Gariboti, Julio Cesar ^[3] ; Zimmermann Feistel, Luis Henrique ^[4] ; Dutra, Joao Vitor ^[4] ; Maciel Filho, Rubens ^[1] ; Tovar, Laura Plazas ^[3]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Chem Engn, BR-13083852 Campinas, SP - Brazil

^[2] Andrews Univ, Dept Engn, Berrien Springs, MI 49104 - USA

^[3] Univ Fed Sao Paulo, Dept Chem Engn, BR-09913030 Diadema, SP - Brazil

^[4] Univ Fed Santa Maria, Dept Chem Engn, BR-97105900 Santa Maria, RS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Cellulose; v. 27, n. 10, p. 5641-5663, JUL 2020.
• Citações Web of Science: 1

Resumo

In this work, a mechanistic model was developed to simulate the kinetics of the production of levulinic acid (LA) from sugarcane bagasse (SCB), rice husk (RH) and soybean straw (SS). The production of LA from those agro-industrial wastes followed the methodology of biorefining in three stages. Experimental data from the third stage (catalytic depolymerization of cellulose) obtained under a wide range of operating conditions were used to estimate the parameters of the model. An optimization procedure based on a genetic algorithm was used to determine the optimal parameter values. The prediction of the concentrations of glucose, 5-HMF and LA using the mechanistic model was particularly accurate, as demonstrated by R-2 and RMSE. Thereby, a satisfactory concordance was reached between the high yields of LA of 61.1 mol%, 67.7 mol% and 61.4 mol% calculated by the model, and the experimental yields of 60.5 +/- 2.1 mol%, 65.2 +/- 2.9 mol% and 61.5 +/- 4.0 mol% (under optimum conditions of 190 degrees C, 7.0% w/v of H2SO4, 75 min) for SCB, RH and SS, respectively. The biorefining of the agro-industrial wastes under optimum operating conditions allowed a satisfactory catalytic depolymerization of cellulose, regardless of the degree of crystallinity. The estimation of yields led to suggesting a strategy from the point of view of process synthesis and design, integrating SCB, RH and SS to supply their off-season and, thus, to ensure the supply of raw materials in the production of LA. {[}GRAPHICS] . (AU)

• Processo FAPESP: 17/23335-9 - Desenvolvimento integrado de biorrefinaria e planta de bioetanol de cana-de-açúcar com emissão zero de CO2: rotas para converter recursos renováveis em bioprodutos e bioeletricidade
• Beneficiário: Elmer Alberto Ccopa Rivera
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico
• Processo FAPESP: 15/20630-4 - Desenvolvimento integrado de biorrefinaria e planta de bioetanol de cana-de-açúcar com emissão zero de CO2: rotas para converter recursos renováveis em bioprodutos e bioeletricidade
• Beneficiário: Rubens Maciel Filho
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 15/17592-3 - Otimização da produção e obtenção do ácido levulínico a partir do bagaço e melaço de cana-de-açúcar
• Beneficiário: Emília Savioli Lopes
• Modalidade de apoio: Bolsas no Brasil - Doutorado