Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, 1304 West Pennsylvania Avenue, Urbana, IL 61801, United States.
Bioenergy Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, Peoria, IL 61604, United States(1).
Bioresour Technol. 2016 Sep;216:706-13. doi: 10.1016/j.biortech.2016.06.003. Epub 2016 Jun 2.
Efficient pretreatment is essential for economic conversion of lignocellulosic feedstocks into monosaccharides for biofuel production. To realize high sugar yields with low inhibitor concentrations, hot water or dilute acid pretreatment followed by disk milling is proposed. Corn stover at 20% solids was pretreated with hot water at 160-200°C for 4-8min with and without subsequent milling. Hot water pretreatment and disk milling acted synergistically to improve glucose and xylose yields by 89% and 134%, respectively, compared to hot water pretreatment alone. Hot water pretreated (180°C for 4min) and milled samples had the highest glucose and xylose yields among all hot water pretreated and milled samples, which were comparable to samples pretreated with 0.55% dilute acid at 160°C for 4min. However, samples pretreated with 1% dilute acid at 150°C for 4min and disk milled had the highest observed glucose (87.3%) and xylose yields (83.4%).
高效的预处理对于将木质纤维素原料转化为用于生物燃料生产的单糖至关重要。为了在低抑制剂浓度下实现高糖产量，提出了热水或稀酸预处理，然后进行盘式磨浆。20%固含量的玉米秸秆在 160-200°C 下用热水预处理 4-8min，同时或不进行后续磨浆。与单独的热水预处理相比，热水预处理和盘式磨浆协同作用，分别将葡萄糖和木糖的产率提高了 89%和 134%。所有热水预处理和磨浆的样品中，180°C 预处理 4min 并磨浆的样品的葡萄糖和木糖产率最高，与在 160°C 用 0.55%稀酸预处理 4min 的样品相当。然而，在 150°C 用 1%稀酸预处理 4min 并进行盘式磨浆的样品的葡萄糖（87.3%）和木糖（83.4%）产率最高。
