Identification of kinetics parameters of wheat straw and sugar beet pulp hydrolysis with sulphurous acid
Kazan National Research Technological University, Karl Marx str. 68, RU 420015 Kazan, Russian Federation
The mathematical modeling of the conversion of hemicelluloses of wheat straw and sugar beet pulp into monosaccharides using diluted sulphurous acid (0.59 and 1.18% wt) at high temperatures was performed. Kinetic equation, activation energy, pre-exponential factor and reaction order of the acid catalyst were determined. It was shown that agreement between the experimental data and kinetic model is good. It was proved that the process proceeds in the kinetic region and the entire array of measurements of the yield of monosaccharides satisfactorily described by the model with the minimum number of steps. The model predicts a decrease of duration of the process and increase of monosaccharides concentration in hydrolysates of lignocellulosic feedstock with temperature increase.