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

第一作者： Song, Guojie

作者： Song, Guojie;Sun, Chihe;Madadi, Meysam;Sun, Fubao;Dou, Shaohua;Yan, Junshu;Huan, Hailin;Aghbashlo, Mortaza;Tabatabaei, Meisam;Tabatabaei, Meisam;Ashori, Alireza

作者机构：

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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