Enhanced enzymatic hydrolysis and hydrogen production of sugarcane bagasse pretreated by peroxyformic acid
Enhanced enzymatic hydrolysis and hydrogen production of sugarcane bagasse pretreated by peroxyformic acid
复制标题
过氧甲酸预处理甘蔗渣强化酶解产氢
DOI：
10.1016/j.biortech.2021.124751
复制
发表时间：
2021-01-31
影响因子：
11.4
通讯作者：
Zhu, Ming-Jun
中科院分区：
文献类型：
--
作者：
Bu, Jie;Wang, Yu-Tao;Zhu, Ming-Jun
预处理在木质纤维素生物质生产生物燃料中起着关键作用。通过对预处理后的甘蔗渣的成分分析和处理效果的研究，对过氧甲酸预处理的主要影响因素进行了优化。在优化的预处理条件下，木质素的去除率达到59.0%，纤维素的损失率为9.2%，糖化率达到103.6%。PA预处理对SCB结构特征的影响也进行了研究，预处理SCB的消化率也进行了评估，通过黑暗发酵产氢与丰富的厌氧纤维素分解微生物菌群MC1。产氢量增加了195.5%（基于初始SCB），占优势的半纤维素降解菌属Thermoanaerobacterium的丰度从23.8%增加到40.2%，这是由于PA预处理SCB中剩余的和可获得的半纤维素。
Pretreatment plays a key role in biofuel production from lignocellulosic biomass. In this study, the main factors of peroxyformic acid (PA) pretreatment were optimized in the light of enzymolysis efficiency and composition analysis of pretreated sugarcane bagasse (SCB). Lignin was significantly removed (59.0%) and a complete saccharification level (103.6%) was obtained for the pretreated SCB with slight cellulose loss (9.2%) under the optimized pretreatment conditions. The effects of PA pretreatment on the structural characteristics of SCB were also studied and the digestibility of pretreated SCB was also evaluated by dark fermentative hydrogen production with an enriched anaerobic cellulolytic microbial consortium MC1. The hydrogen production increased by 195.5% (based on initial SCB) and the abundance of dominant hemicellulose-degradation genus Thermoanaer-obacterium increased from 23.8% to 40.2% due to the remaining and accessible hemicellulose in PA pretreated SCB.