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Related Experiment Video

Updated: May 23, 2026

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
10:42

Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids

Published on: August 10, 2016

Visible-light-assisted ionic liquid system for fractionating corn stalk at low temperature.

Jing Yao1, Hong Yan2, Junli Xu3

  • 1School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, Heilongjiang, China; Center of Ionic Liquids and Green Energy, Beijing Key Laboratory of Solid State Battery and Energy Storage Process, State Key Laboratory of Mesoscience and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, China.

Bioresource Technology
|May 21, 2026
PubMed
Summary

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This summary is machine-generated.

This study introduces a novel photothermal biomass fractionation method using an ionic liquid and a photocatalyst. It efficiently separates lignin from corn stalk at low temperatures, yielding high-purity cellulose.

Area of Science:

  • Biomass valorization
  • Green chemistry
  • Materials science

Background:

  • Efficient fractionation of lignocellulosic biomass is crucial for sustainable valorization.
  • Conventional methods often require harsh conditions, limiting their applicability.
  • Developing low-temperature, selective pretreatment strategies is essential.

Purpose of the Study:

  • To develop a visible-light-assisted ionic liquid composite system for efficient photothermal fractionation of corn stalk.
  • To investigate the role of the ionic liquid and photocatalyst in lignin solubilization and cellulose retention.
  • To evaluate the performance of this integrated strategy compared to conventional methods.

Main Methods:

  • Utilized a composite system of an ionic liquid ([BHEM]mesy) and ethylene glycol with a g-C3N4 photocatalyst.
Keywords:
Cellulose valorizationCorn stalk fractionationIonic liquidMild conditionsPhotothermal process intensification

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Last Updated: May 23, 2026

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  • Employed visible-light irradiation at low temperatures (80 °C) for photothermal pretreatment.
  • Analyzed lignin removal, cellulose retention, and cellulose crystallinity.

    • Main Results:

    • Achieved 83.03% lignin removal and 84.68% cellulose retention under optimized conditions (80 °C, 4 h).
    • Regenerated lignin showed reduced molecular weight, and purified cellulose was suitable for aerogel fabrication.
    • Visible-light coupling reduced reaction temperature and maintained cellulose crystallinity.

    Conclusions:

    • The developed photothermal fractionation strategy offers a highly efficient and novel method for biomass utilization.
    • This approach enhances pretreatment efficiency by lowering reaction temperature and preserving cellulose integrity.
    • The integrated system demonstrates significant potential for sustainable biomass valorization.