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Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies v.228, 2017년, pp.176 - 185   SCI SCIE
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A kinetic model for hydrothermal pretreatment of sugarcane straw

dos Santos Rocha, Martha Suzana Rodrigues (Chemical Engineering Graduate Program, Federal University of São Carlos, Rod. Washington Luís-km 235, CEP: 13565-905 São Carlos, SP, Brazil ) ; Pratto, Bruna (Chemical Engineering Graduate Program, Federal University of São Carlos, Rod. Washington Luís-km 235, CEP: 13565-905 São Carlos, SP, Brazil ) ; de Sousa Júnior, Ruy (Chemical Engineering Graduate Program, Federal University of São Carlos, Rod. Washington Luís-km 235, CEP: 13565-905 São Carlos, SP, Brazil ) ; Almeida Júnior, Renata Maria Rosas Garcia (Chemical Engineering Graduate Program, Federal University of Alagoas, Av. Lourival de Melo Mota, s/n, Cidade Universitária, CEP: 57072-970 Maceió, AL, Brazil ) ; Cruz Júnior, Antonio José (Chemical Engineering Graduate Program, Federal University of São Carlos, Rod. Washington Luís-km 235, CEP: 13565-905 São Carlos, SP, Brazil ) ; Gonçalves da ;
  • 초록  

    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. Highlights Cellulose and hemicellulose degradation were modelled in pretreatment step. A significant variation on kinetic parameters occurs with the reaction temperature. Models were validated with experimental data and statistical analysis. Models fitted well to the experimental data.


  • 주제어

    Sugarcane straw .   Hydrothermal pretreatment .   Kinetic parameters .   Global optimization.  

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