Dual assistance of surfactants in glycerol organosolv pretreatment and enzymatic hydrolysis of lignocellulosic biomass for bioethanol production
文献类型： 外文期刊
作者： Song, Guojie 1 ; Sun, Chihe 1 ; Madadi, Meysam 1 ; Dou, Shaohua 2 ; Yan, Junshu 3 ; Huan, Hailin 3 ; Aghbashlo, Mortaza 4 ; Tabatabaei, Meisam 5 ; Sun, Fubao 1 ; Ashori, Alireza 7 ;
作者机构： 1.Jiangnan Univ, Sch Biotechnol, Key Lab Ind Biotechnol, Minist Educ, Wuxi 214122, Peoples R China
2.Dalian Univ, Coll Life & Hlth, Dalian 116622, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Anim Sci, Nanjing 210014, Peoples R China
4.Univ Tehran, Coll Agr & Nat Resources, Fac Agr Engn & Technol, Dept Mech Engn Agr Machinery, Karaj, Iran
5.Univ Malaysia Terengganu, Higher Inst Ctr Excellence HICoE, Inst Trop Aquaculture & Fisheries AKUATROP, Kuala Nerus 21030, Terengganu, Malaysia
6.Saveetha Inst Med & Tech Sci, Saveetha Dent Coll, Dept Biomat, Chennai 600077, India
7.Iranian Res Org Sci & Technol, Dept Chem Technol, Tehran, Iran
关键词： Sugarcane bagasse; Surfactant-assisted pretreatment; High-solid enzymatic hydrolysis; Cellulosic ethanol; Economic analysis
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.4； 五年影响因子：10.6 ）
ISSN： 0960-8524
年卷期： 2024 年 395 卷
页码：
收录情况： SCI
摘要： This study investigated an innovative strategy of incorporating surfactants into alkaline-catalyzed glycerol pretreatment and enzymatic hydrolysis to improve lignocellulosic biomass (LCB) conversion efficiency. Results revealed that adding 40 mg/g PEG 4000 to the pretreatment at 195 degrees C obtained the highest glucose yield (84.6%). This yield was comparable to that achieved without surfactants at a higher temperature (240 degrees C), indicating a reduction of 18.8% in the required heat input. Subsequently, Triton X-100 addition during enzymatic hydrolysis of PEG 4000-assisted pretreated substrate increased glucose yields to 92.1% at 6 FPU/g enzyme loading. High-solid fed-batch semi-simultaneous saccharification and co-fermentation using this dual surfactant strategy gave 56.4 g/L ethanol and a positive net energy gain of 1.4 MJ/kg. Significantly, dual assistance with surfactants rendered 56.3% enzyme cost savings compared to controls without surfactants. Therefore, the proposed surfactant dual -assisted promising approach opens the gateway to economically viable enzymemediated LCB biorefinery.
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