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Aldehydes-Aided Lignin-First Deconstruction Strategy for Facilitating Lignin Monomers and Fermentable Glucose Production from Poplar Wood

Author

Listed:
  • Tian-Ying Chen

    (Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China)

  • Cheng-Ye Ma

    (Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
    Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China)

  • Dou-Yong Min

    (Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China)

  • Chuan-Fu Liu

    (State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China)

  • Shao-Ni Sun

    (Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China)

  • Xue-Fei Cao

    (Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China)

  • Jia-Long Wen

    (Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
    Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China)

  • Tong-Qi Yuan

    (Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
    Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China)

  • Run-Cang Sun

    (Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China)

Abstract

In this study, lignin with fine structures and facile enzymatic saccharifying residue were successively dissociated based on the lignin-first biomass deconstruction strategy. In the lignin-first process, aldehyde-protected lignin fractions were firstly isolated by acid-catalyzed dioxane extraction in the presence of formaldehyde (FA) and acetaldehyde (AA) and then analyzed by advanced nuclear magnetic resonance (NMR) spectroscopy and gel permeation chromatography (GPC). The optimized hydrogenolysis of the extracted lignin (L FA and L AA ) resulted in a high yield (42.57% and 33.00%) of lignin monomers with high product selectivity (mainly 2,6-dimethoxy-4-propylphenol) (39.93% and 46.61%). Moreover, the cellulose-rich residues were saccharified into fermentable glucose for bioethanol production. The glucose yield of the substrate (R AA ) reached to 75.12%, which was significantly higher than that (15.4%) of the substrate (R FA ). In short, the lignin-first biomass deconstruction by adding AA is a promising and sustainable process for producing value-added products (energy and fine chemicals) from lignocellulosic biomass.

Suggested Citation

  • Tian-Ying Chen & Cheng-Ye Ma & Dou-Yong Min & Chuan-Fu Liu & Shao-Ni Sun & Xue-Fei Cao & Jia-Long Wen & Tong-Qi Yuan & Run-Cang Sun, 2020. "Aldehydes-Aided Lignin-First Deconstruction Strategy for Facilitating Lignin Monomers and Fermentable Glucose Production from Poplar Wood," Energies, MDPI, vol. 13(5), pages 1-15, March.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:5:p:1113-:d:327356
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    References listed on IDEAS

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    1. Sun, Shao-Long & Wen, Jia-Long & Ma, Ming-Guo & Sun, Run-Cang, 2014. "Enhanced enzymatic digestibility of bamboo by a combined system of multiple steam explosion and alkaline treatments," Applied Energy, Elsevier, vol. 136(C), pages 519-526.
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