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Lewis base enhanced neutral deep eutectic solvent pretreatment for enzymatic hydrolysis of corn straw and lignin characterization

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  • Xie, Junxian
  • Cheng, Zheng
  • Zhu, Shiyun
  • Xu, Jun

Abstract

In order to improve the pretreatment behavior of neutral deep eutectic solvent (DES), a novel method was proposed by using three types of Lewis base (sodium carbonate, sodium sulfite and sodium acetate as catalysts to pretreat corn straw at 120 °C for 3 h. As compared to DES, DES with Na2SO3, DES with NaAC and DES with Na2CO3, all can remove most of hemicellulose and lignin in pretreated corn straw. Meanwhile, the 94.5% of glucose yield was obtained treated by DES with Na2CO3 and was approximately five-fold higher than that of the untreated substrate at an enzyme loading of 15 FPU/g material. The regenerated lignin displayed well-preserved structures, and possessed a high purity (more than 84%), narrow molecular weight distribution (PDI <2.4), excellent thermal stability. Overall, this work provided detailed analysis for efficient deconstruction of corn straw for future industrialized application.

Suggested Citation

  • Xie, Junxian & Cheng, Zheng & Zhu, Shiyun & Xu, Jun, 2022. "Lewis base enhanced neutral deep eutectic solvent pretreatment for enzymatic hydrolysis of corn straw and lignin characterization," Renewable Energy, Elsevier, vol. 188(C), pages 320-328.
    • Handle: RePEc:eee:renene:v:188:y:2022:i:c:p:320-328
    DOI: 10.1016/j.renene.2022.02.003
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    References listed on IDEAS

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    1. Alam, Aftab & Wang, Youmei & Liu, Fei & Kang, Heng & Tang, Shang-wen & Wang, Yanting & Cai, Qiuming & Wang, Hailang & Peng, Hao & Li, Qian & Zeng, Yajun & Tu, Yuanyuan & Xia, Tao & Peng, Liangcai, 2020. "Modeling of optimal green liquor pretreatment for enhanced biomass saccharification and delignification by distinct alteration of wall polymer features and biomass porosity in Miscanthus," Renewable Energy, Elsevier, vol. 159(C), pages 1128-1138.
    2. Ji, Qinghua & Yu, Xiaojie & Yagoub, Abu ElGasim A. & Chen, Li & Mustapha, Abdullateef Taiye & Zhou, Cunshan, 2021. "Enhancement of lignin removal and enzymolysis of sugarcane bagasse by ultrasound-assisted ethanol synergized deep eutectic solvent pretreatment," Renewable Energy, Elsevier, vol. 172(C), pages 304-316.
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    1. Guoming Zeng & Xuanhao Fan & Fei Wang & Yang Luo & Dong Liang & Yongguang Han & Pei Gao & Quanfeng Wang & Jiale Wang & Chunyi Yu & Libo Jin & Da Sun, 2023. "Enhanced Rate of Enzymatic Saccharification with the Ionic Liquid Treatment of Corn Straw Activated by Metal Ion Solution," Sustainability, MDPI, vol. 15(1), pages 1-12, January.
    2. Xiao, Tianyuan & Hou, Minjie & Guo, Xu & Cao, Xinyu & Li, Changgeng & Zhang, Qi & Jia, Wenchao & Sun, Yanning & Guo, Yanzhu & Shi, Haiqiang, 2024. "Recent progress in deep eutectic solvent(DES) fractionation of lignocellulosic components ： A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 192(C).
    3. Poy, Helena & da Costa Lopes, André M. & Lladosa, Estela & Gabaldón, Carmen & Loras, Sonia & Silvestre, Armando J.D., 2023. "Enhanced biomass processing towards acetone-butanol-ethanol fermentation using a ternary deep eutectic solvent," Renewable Energy, Elsevier, vol. 219(P2).

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