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首页> 外文期刊>African Journal of Biotechnology >Kinetic modeling of concentrated acid hydrolysis of walnut green skin
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Kinetic modeling of concentrated acid hydrolysis of walnut green skin

机译：核桃绿皮浓缩酸水解的动力学模型

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The overall goal of this experiment was to detect whether kinetic modeling can explain effects of temperature, acid concentration, time and solid contents on the production of glucose by concentrated acid hydrolysis of walnut green skin. For this purpose, sulfuric acid concentration of 20, 40 and 60% (w/w), processing temperature of 65, 80 and 90°C, reaction time of 120, 180 and 240 min and solid content of 5, 10 and 15% (w/w) were used as hydrolysis conditions. High performance liquid chromatography (HPLC) was used to analyze the products. The process was modeled by first-order irreversible reaction in series and kinetic constant, relating reaction time to glucose released. To relate temperature with kinetic constant and calculate activation energy, Arrhenius equation was employed.?Optimal conditions occurred at 40% H2SO4, 90°C and 15% solid content for 285 min, which yielded a solution with 10.72 g glucose/L. In these conditions, 45% of the cellulose was hydrolyzed.
机译：该实验的总体目标是检测动力学模型是否可以解释温度，酸浓度，时间和固体含量对核桃绿皮浓缩酸水解葡萄糖生产葡萄糖的影响。为此，硫酸浓度为20、40和60％（w / w），处理温度为65、80和90°C，反应时间为120、180和240分钟，固体含量为5、10和15％ （w / w）用作水解条件。高效液相色谱法（HPLC）用于分析产物。该过程通过串联的一级不可逆反应和动力学常数来建模，反应时间与释放的葡萄糖相关。为了使温度与动力学常数相关联并计算活化能，使用了Arrhenius方程。最佳条件是在40％H2SO4、90°C和15％固体含量下进行285分钟，得到的葡萄糖溶液为10.72 g / L。在这些条件下，纤维素的45％被水解。

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