Comprehensive insights into the impact of pretreatment with deep eutectic solvents on the anaerobic digestion of cornstalk

文献类型： 外文期刊

第一作者： Shen, Ruixia

作者： Shen, Ruixia;Hou, Xintong;Luo, Juan;Zhao, Lixin;Yao, Zonglu;Yu, Jiadong

作者机构：

关键词： Deep eutectic solvent; Pretreatment; Cornstalk; Anaerobic digestion

期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.2； 五年影响因子：13.5 ）

ISSN： 1385-8947

年卷期： 2025 年 514 卷

页码：

收录情况： SCI

摘要： Deep eutectic solvents (DES) have several advantages of cost-effectiveness, environmental sustainability and strong designability, which render them particularly promising for the pretreatment of lignocellulosic biomass. This study synthesized six DES with varying pH levels to investigate their effects on the structural characteristics, lignocellulosic components, and methanogenic potential of cornstalk during the anaerobic digestion (AD). It indicated that the choline chloride/formic acid with strong acidity significantly damaged the surface of the cornstalk, with the crystallinity index of cellulose exhibiting the most substantial change, increasing by 10.18 % compared to the control group. Following the choline chloride/triethanolamine pretreatment, cellulose recovery was recorded at 97.90 %, hemicellulose recovery at 88.29 %, and lignin removal at 23.73 %. The peak of daily methane production of 53.10 mL/g volatile solids (VS) was achieved on the third day from choline chloride/ glycerol (ChCl/Gly) pretreatment, with a lag phase of only 0.74 days. And cumulative methane production reached its maximum of 316.85 mL/g VS, which was 2.22 times greater than that of the control group. Furthermore, ChCl/Gly facilitated the growth and reproduction of Chloroflexi and Methanosaeta, with relative abundances of 2.36 % and 76.84 %, respectively. Notably, Methanosarcina showed a statistically significant positive correlation with volatile fatty acids (R = 0.943). This study provides critical technical insights for the application of DES in enhancing methane production within biogas engineering.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序