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Related Experiment Video

Updated: Dec 12, 2025

Extraction of Lignin with High β-O-4 Content by Mild Ethanol Extraction and Its Effect on the Depolymerization Yield
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Power-to-chemicals: Low-temperature plasma for lignin depolymerisation in ethanol.

Rusen Zhou1, Renwu Zhou2, Sen Wang3

  • 1School of Chemistry and Physics and QUT Centre for Materials Science, Queensland University of Technology (QUT), Brisbane QLD 4000, Australia.

Bioresource Technology
|August 10, 2020
PubMed
Summary

This study presents a novel low-temperature plasma method for breaking down lignin into valuable chemicals. Combining plasma with a Fenton reaction significantly boosts lignin conversion efficiency for sustainable biorefineries.

Keywords:
Lignin depolymerisationLow-temperature plasmaRenewable chemicals

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Area of Science:

  • Chemical Engineering
  • Materials Science
  • Renewable Energy

Background:

  • Lignin valorisation is crucial for biorefineries but hindered by its complex structure.
  • Existing lignin conversion methods often lack cost, energy, and material efficiency.

Purpose of the Study:

  • To develop an efficient, low-temperature plasma-based process for lignin depolymerisation.
  • To enhance lignin conversion yields using a Fenton reaction.
  • To produce valuable aromatic and dicarboxylic acid derivatives from lignin.

Main Methods:

  • Utilisation of a low-temperature plasma discharge over an ethanol surface to create a reactive environment.
  • Integration of a Fenton reaction (Fe2O3 and H2O2) to augment the oxidative conditions.
  • Analysis of the depolymerisation products, focusing on aromatic and dicarboxylic acid derivatives.

Main Results:

  • Achieved lignin depolymerisation under mild conditions using plasma technology.
  • Increased lignin conversion yield from 42.6% to 66.0% by incorporating the Fenton reaction.
  • Generated renewable chemicals rich in aromatics and dicarboxylic acid derivatives.

Conclusions:

  • Low-temperature plasma offers an effective route for lignin depolymerisation.
  • Plasma-Fenton reaction synergy enhances lignin conversion efficiency.
  • This approach provides a viable power-to-chemicals strategy for biorefineries.