title: Hydrodynamic cavitation-assisted alkaline pretreatment as a new approach for sugarcane bagasse biorefineries.
abstract: Hydrodynamic cavitation (HC) was employed in order to improve the efficiency of alkaline pretreatment of sugarcane bagasse (SCB). Response surface methodology (RSM) was used to optimize pretreatment parameters: NaOH concentration (0.1-0.5M), solid/liquid ratio (S/L, 3-10%) and HC time (15-45min), in terms of glucan content, lignin removal and enzymatic digestibility. Under an optimal HC condition (0.48M of NaOH, 4.27% of S/L ratio and 44.48min), 52.1% of glucan content, 60.4% of lignin removal and 97.2% of enzymatic digestibility were achieved. Moreover, enzymatic hydrolysis of the pretreated SCB resulted in a yield 82% and 30% higher than the untreated and alkaline-treated controls, respectively. HC was found to be a potent and promising approach to pretreat lignocellulosic biomass.
authors.affiliation: Department of Biotechnology, Engineering School of Lorena, University of São Paulo, CEP 12602-810, Brazil.
authors.forename: Ruly
authors.initials: R
authors.lastname: Terán Hilares
authors.affiliation: Department of Biotechnology, Engineering School of Lorena, University of São Paulo, CEP 12602-810, Brazil.
authors.forename: Júlio César
authors.initials: JC
authors.lastname: Dos Santos
authors.affiliation: Department of Civil and Environmental Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea.
authors.forename: Muhammad Ajaz
authors.initials: MA
authors.lastname: Ahmed
authors.affiliation: Department of Civil and Environmental Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea.
authors.forename: Seok Hwan
authors.initials: SH
authors.lastname: Jeon
authors.affiliation: Department of Biotechnology, Engineering School of Lorena, University of São Paulo, CEP 12602-810, Brazil.
authors.forename: Silvio Silvério
authors.initials: SS
authors.lastname: da Silva
authors.affiliation: Department of Civil and Environmental Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea. Electronic address: hanj2@kaist.ac.kr.
authors.forename: Jong-In
authors.initials: JI
authors.lastname: Han
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000379:methods; D002482:Cellulose / Q000737:chemistry / Q000378:metabolism*; D006358:Hot Temperature; D057446:Hydrodynamics; D006868:Hydrolysis; D045423:Microbubbles; D011312:Pressure; D031786:Saccharum / Q000737:chemistry / Q000378:metabolism*; D012972:Sodium Hydroxide / Q000378:metabolism*; D055548:Vapor Pressure
chemical_list: D012972:Sodium Hydroxide; D002482:Cellulose; C027433:bagasse
keywords: Alkaline pretreatment; Enzymatic digestibility; Hydrodynamic cavitation; Response surface methodology (RSM); Sugarcane bagasse