کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7788142 | 1500629 | 2015 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimization and kinetic analysis on the sulfuric acid - Catalyzed depolymerization of wheat straw
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The objectives of this work were to optimize the experimental condition and to study the kinetic behavior of wheat straw depolymerization with sulfuric acid (2 wt%, 3 wt%, and 4 wt%) at different temperatures (120 °C, 130 °C, and 140 °C). The two-fraction kinetic model was obtained for the prediction of the generations of product and by-product during depolymerization. The kinetic parameters of the two-fraction model were analyzed using an Arrhenius-type equation. Applying the kinetic two-fraction model, the optimum condition for wheat straw depolymerization was 3 wt% H2SO4 at 130 °C for 75 min, which yielded a high concentration of fermentable sugars (xylose 8.934 g/L, glucose 1.363 g/L, and arabinose 1.203 g/L) and low concentrations of microbial inhibitors (furfural 0.526 g/L and acetic acid 1.192 g/L). These results suggest that the model obtained in this study can satisfactorily describe the formation of degradation products and the depolymerization mechanism of wheat straw.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 129, 20 September 2015, Pages 79-86
Journal: Carbohydrate Polymers - Volume 129, 20 September 2015, Pages 79-86
نویسندگان
Qian-Qian Wu, Yu-Long Ma, Xuan Chang, Yong-Gang Sun,