玉米秸秆的热预处理提高还原糖和生物氢产量。
Pretreatment of corn stover by torrefaction for improving reducing sugar and biohydrogen production.
机构信息
Key Laboratory of New Materials and Facilities for Rural Renewable Energy, MOA of China, Henan Agricultural University, Zhengzhou 450002, China.
Key Laboratory of New Materials and Facilities for Rural Renewable Energy, MOA of China, Henan Agricultural University, Zhengzhou 450002, China.
出版信息
Bioresour Technol. 2022 May;351:126905. doi: 10.1016/j.biortech.2022.126905. Epub 2022 Feb 25.
The torrefaction pretreatment technology with different temperature varying from 160℃ to 240℃ was utilized to enhance the enzymatic saccharification and hydrogen production potential of corn stover. The composition characteristics, Crystal Intensity (CrI), reducing sugars yield and hydrogen production of the pretreated corn stover were detected to explore the torrefaction pretreatment effectiveness. Results revealed that the reducing sugar yield and hydrogen production from corn stover were improved significantly through torrefaction pretreatment, both the maximum reducing sugar yield of 427.86 ± 19 mg/g Total solid(TS) and hydrogen yield of 123.72 mL/g TS were obtained at 200 ℃, increased by 46.41% and 70.79%, respectively. The kinetic parameters from Gompertz model showed torrefaction pretreatment could shorten the lag phase time of enzymatic saccharification and hydrogen production. The reducing sugar data can be fitted well by fractal-like kinetic model and Gompertz model.
采用不同温度（160℃至 240℃）的热预处理技术来提高玉米秸秆的酶解糖化和产氢潜力。检测预处理玉米秸秆的组成特性、结晶强度（CrI）、还原糖产率和产氢量，以探索热预处理的效果。结果表明，热预处理可显著提高玉米秸秆的还原糖产率和产氢量，在 200℃时最大还原糖产率达到 427.86±19mg/g 总固体（TS），氢气产率达到 123.72mL/g TS，分别提高了 46.41%和 70.79%。来自 Gompertz 模型的动力学参数表明，热预处理可以缩短酶解糖化和产氢的迟滞期。还原糖数据可以很好地拟合分形动力学模型和 Gompertz 模型。
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