title: A kinetic model for hydrothermal pretreatment of sugarcane straw.
abstract: This work presents kinetic models of cellulose and hemicellulose extraction during hydrothermal pretreatment of sugarcane straw. Biomass was treated under conditions of 180, 195, and 210°C, using a solid/liquid ratio of 1:10 (w/v). In this study, cellobiose, glucose, formic acid and hydroxymethylfurfural (from cellulosic fraction) and xylose, arabinose, acetic acid, glucuronic acid and furfural (from hemicellulosic fraction) were taken into account in the kinetic parameters determination. The global search algorithm Simulated Annealing was used to fit the models. At 195°C/15min, 85% of hemicellulose and 21% of cellulose removal was reached. For the confidence regions, it was observed that it can be broad, which is coherent with the fact that the parameters are highly correlated. Kinetic models proposed for both cellulosic and hemicellulosic fractions degradation fitted well to the experimental data.
authors.affiliation: Chemical Engineering Graduate Program, Federal University of São Carlos, Rod. Washington Luís-km 235, CEP: 13565-905 São Carlos, SP, Brazil. Electronic address: santosmartha2014@gmail.com.
authors.forename: Martha Suzana Rodrigues
authors.initials: MSR
authors.lastname: Dos Santos Rocha
authors.affiliation: Chemical Engineering Graduate Program, Federal University of São Carlos, Rod. Washington Luís-km 235, CEP: 13565-905 São Carlos, SP, Brazil. Electronic address: brunapratto@hotmail.com.
authors.forename: Bruna
authors.initials: B
authors.lastname: Pratto
authors.affiliation: Chemical Engineering Graduate Program, Federal University of São Carlos, Rod. Washington Luís-km 235, CEP: 13565-905 São Carlos, SP, Brazil; Chemical Engineering Department, Federal University of São Carlos, Rod. Washington Luís-km 235, CEP: 13565-905 São Carlos, SP, Brazil. Electronic address: ruy@ufscar.br.
authors.forename: Ruy
authors.initials: R
authors.lastname: de Sousa
authors.affiliation: Chemical Engineering Graduate Program, Federal University of Alagoas, Av. Lourival de Melo Mota, s/n, Cidade Universitária, CEP: 57072-970 Maceió, AL, Brazil; Technology Center, Federal University of Alagoas, Av. Lourival de Melo Mota, s/n, Cidade Universitária, CEP: 57072-970 Maceió, AL, Brazil. Electronic address: renatarosas_ufal@hotmail.com.
authors.forename: Renata Maria Rosas Garcia
authors.initials: RMRG
authors.lastname: Almeida
authors.affiliation: Chemical Engineering Graduate Program, Federal University of São Carlos, Rod. Washington Luís-km 235, CEP: 13565-905 São Carlos, SP, Brazil; Chemical Engineering Department, Federal University of São Carlos, Rod. Washington Luís-km 235, CEP: 13565-905 São Carlos, SP, Brazil. Electronic address: ajgcruz@ufscar.br.
authors.forename: Antonio José Gonçalves da
authors.initials: AJGD
authors.lastname: Cruz
mesh_terms: D018533:Biomass; D002482:Cellulose / Q000737:chemistry / Q000378:metabolism; D006868:Hydrolysis; D007700:Kinetics; D011134:Polysaccharides / Q000737:chemistry / Q000378:metabolism; D012037:Refuse Disposal / Q000379:methods*; D031786:Saccharum / Q000737:chemistry* / Q000378:metabolism
chemical_list: D011134:Polysaccharides; C007916:hemicellulose; D002482:Cellulose
keywords: Global optimization; Hydrothermal pretreatment; Kinetic parameters; Sugarcane straw