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首页> 外文期刊>Biomass Conversion and Biorefinery >Alkaline hydrogen peroxide-pretreated sugarcane tops for bioethanol production-a process optimization study
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Alkaline hydrogen peroxide-pretreated sugarcane tops for bioethanol production-a process optimization study

机译：用于生物乙醇生产的碱性过氧化氢 - 预处理甘蔗顶部 - 一种过程优化研究

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摘要

In the present work, sugarcane tops (SCT), an agricultural residue, were subjected to alkaline hydrogen peroxide (AHP) subsequently followed by acid hydrolysis for the maximum release of fermentable sugars for bioethanol production. The process parameters that affect the AHP pretreatment efficiency include AHP concentration (%, v/v), SCT loading (%, w/v), pretreatment time (h), pretreatment temperature (degrees C), and agitation speed (rpm) were studied for effective delignification. Furthermore, central composite design (CCD) based on response surface methodology (RSM) was applied for optimizing various process parameters of acid hydrolysis such as sulfuric acid concentration (%, v/v), reaction time (min), and reaction temperature (degrees C). The optimal hydrolysis conditions yielded 6.911 g/L of xylose and 4.106 g/L of glucose. The hydrolyzate containing fermentable sugars was fermented using Saccharomyces cerevisiae, and about 9.9 vol% ethanol was obtained at the end of 24 h fermentation. The native, pretreated, and hydrolyzed SCT were also characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) techniques.
机译：在本作工作中，随后对酸性水解进行碱性氢残基（AHP）进行碱性过氧化氢（AHP），用于最大释放生物乙醇生产的可发酵糖。影响AHP预处理效率的过程参数包括AHP浓度（％，V / V），SCT加载（％，W / V），预处理时间（H），预处理温度（℃）和搅拌速度（RPM）是研究了有效的奖项。此外，基于响应表面方法（RSM）的中央复合设计（CCD）用于优化酸水解的各种工艺参数，例如硫酸浓度（％，v / v），反应时间（min）和反应温度（度C）。最佳水解条件产生6.911g / L木糖和4.106g / L葡萄糖。使用Saccharomyces Cerevisiae发酵含有可发酵的糖的水解物，在24小时发酵结束时获得约9.9体积％的乙醇。本机，预处理和水解的SCT还表征，其特征在于傅里叶变换红外光谱（FTIR），X射线衍射（XRD）和扫描电子显微镜（SEM）技术。

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