摘要
为了深入探讨不同水热预处理强度对芒草结构和组成的影响,分析比较不同预处理条件对芒草酶解的影响,将水热预处理与酸、乙醇和低共熔溶剂预处理方式进行了对比。研究考察了水热过程中温度、时间、固液比和乙酸浓度对芒草中木质纤维素的影响。结果表明,在180℃下,反应时间为2.5 h,固液比为1∶7的条件下,不添加乙酸时,葡萄糖得率最高达到65.43%。相较于其他预处理方法,该工艺具有简单、低成本且高效利用生物质资源的优势。
In order to investigate the effect of different hydrothermal pretreatment intensities on the structure and composition of Miscanthus,especially to analyze and compare the effects of different pretreatment conditions on the enzymatic saccharification of Miscanthus.Different pretreatment methods such as hydrothermal with acid or ethanol,deep eutectic solvents were compared.The effect of temperature,time,solid-liquid ratio,and acetic acid concentration on the composition of Miscanthus during the hydrothermal process were investigated.The results showed that the highest glucose yield reached 65.43%without the addition of acetic acid when pure hydrothermal pretreatment at 180℃,with a reaction time of 2.5 h and a solid-liquid ratio of 1∶7.Compared with other pretreatment methods,this process has the advantages of simplicity,low cost,and efficient utilization of biomass resources.
作者
张佐宇
席鸽
刘强
吴志平
ZHANG Zuoyu;XI Ge;LIU Qiang;WU Zhiping(School of Materials Science and Engineering,Central South University of Forestry and Technology,Changsha 410004,China;Ministry of Forestry Bioethanol Research,Changsha 410004,China;Hunan Engineering Research Center for Woody Biomass Conversion,Changsha 410004,China;Hunan International Joint Laboratory of Woody Biomass Conversion,Changsha 410004,China)
出处
《应用化工》
CAS
CSCD
北大核心
2024年第9期2061-2065,共5页
Applied Chemical Industry
基金
国家十三五重点研发计划项目(2019YFB1503805)。
关键词
芒草
水热预处理
半纤维素脱除率
葡萄糖得率
结构变化
Miscanthus
hydrothermal pretreatment
hemicellulose removal rate
glucose yield
structural changes
