Base activation of persulfate: an effective pretreatment method to enhance glucose production from lignocellulosic biomass

文献类型： 外文期刊

第一作者： Yang, Jirui

作者： Yang, Jirui;Wang, Xiaoqi;Shen, Feng;Qi, Xinhua;Qi, Xinhua

作者机构：

关键词： Lignocellulosic biomass; Biorefinery; Hardwood; Glucose; Alkaline pretreatment; Advanced oxidation processes

期刊名称：CELLULOSE （ 影响因子：4.21； 五年影响因子：4.512 ）

ISSN： 0969-0239

年卷期： 2021 年 28 卷 7 期

页码：

收录情况： SCI

摘要： Pretreatment is a necessary process in biorefineries to overcome recalcitrance of biomass and enhance its conversion efficiency for further transformation. NaOH activation of Na2S2O8, which merges alkaline pretreatment and advanced oxidation processes (AOPs) into one process, was performed at room temperature (25 degrees C) within a short duration (60 min). High concentration of NaOH plays a critically important role in NaOH-Na2S2O8 pretreatment, which not only selectively removed hemicellulose in the lignocellulosic feedstock, but also activated Na(2)S(2)O(8 )to produce strong oxidative radicals, leading to disruption of lignin matrix. The surface area and porosity for the pretreated feedstock were significantly increased compared with those of the pristine counterpart. After pretreatment by 5.12 M NaOH and 0.85 M Na2S2O8, the maximum glucose yield of the feedstock was increased by 47.4% compared with that of pristine counterpart (60.3% vs. 40.9%). This study provides an effective and easily-realizable pretreatment method for the utilization of lignocellulosic biomass. [GRAPHICS] .

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