A novel recyclable alkaline deep eutectic solvent for enhanced biomass fractionation and enzymatic hydrolysisOA
Effective lignin removal while preserving carbohydrates is a critical challenge in the production of bioethanol.Herein,a novel alkaline deep eutectic solvent(DES)composed of ammonium chloride(NH₄Cl)and monoethanolamine(MEA),was designed for efficient lignin removal and carbohydrate retention in corn stalks pretreatment.Under optimal conditions(MEA/NH₄Cl with a molar ratio 6:1,140℃,6 h),the DES achieved 95.7% lignin removal,with glucose and xylose yields after enzymatic hydrolysis of the residue reaching 98%.Remarkably,glucose and xylose yields were up to 96% within only 24 h,cutting the reaction time by two-thirds compared to the conventional 72 h industrial process and significantly enhancing efficiency.The DES also maintained high efficiency after five reuse cycles,demonstrating excellent recyclability and economic potential.Structural analysis revealed increased crystallinity and porosity,providing mechanistic insights into enhanced enzymatic accessibility.This work establishes a sustainable and innovative strategy for lignocellulose pretreatment,paving the way for cellulosic bioethanol production.
Tingting Wang;Ziyue Chen;Aocheng Wei;Chao Xie;Si Hong;Chaofeng Zhang;Xiaojun Shen
State Key Laboratory of Efficient Production of Forest Resources,Beijing Forestry University,Beijing 100083,ChinaState Key Laboratory of Efficient Production of Forest Resources,Beijing Forestry University,Beijing 100083,ChinaState Key Laboratory of Efficient Production of Forest Resources,Beijing Forestry University,Beijing 100083,ChinaNational&Local Joint Engineering Research Center on Biomass Resource Utilization,College of Environmental Science and Engineering,Nankai University,Tianjin 300350,ChinaCollege of Chemistry and Materials,Jiangxi Agricultural University,No.1101 Zhimin Avenue,Nanchang 330045,ChinaJiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,College of Light Industry and Food Engineering,Nanjing Forestry University,159 LongPan Road,Nanjing,ChinaState Key Laboratory of Efficient Production of Forest Resources,Beijing Forestry University,Beijing 100083,China
化学化工
Corn stalkPretreatmentAlkaline deep eutectic solventEnzymatic hydrolysisBioethanol
《Resources Chemicals and Materials》 2026 (1)
P.57-68,12
supported by the National Undergraduate Innovation and Entrepreneurship Program of China(202310022083)the National Natural Science Foundation of China(22308029).
评论