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Updated: Jul 12, 2026
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Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production
Published on: June 15, 2014
CO2-assisted pyrolysis of Mn-loaded biomass for syngas generation and periodate-activating biochar production
Joohyung Lee1, Youn-Jun Lee1, Hocheol Song1
1Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
Environmental Research
|July 9, 2026
Summary
This study introduces a novel method for producing manganese-biochar composites using CO2-assisted pyrolysis. This enhanced catalyst efficiently activates periodate for superior removal of contaminants like bisphenol A.
Area of Science:
- Environmental Chemistry
- Materials Science
- Catalysis
Background:
- Manganese-biochar composites are effective catalysts for periodate activation.
- Scalable production of these composites is hindered by energy recovery limitations in conventional pyrolysis.
Purpose of the Study:
- To develop a scalable and energy-efficient method for producing manganese-biochar composites.
- To investigate the catalytic performance of CO2-assisted pyrolyzed manganese-biochar for periodate activation.
Main Methods:
- Manganese-impregnated switchgrass was pyrolyzed under CO2-assisted conditions.
- Characterization of the resulting manganese-biochar composite (MnSGB (CO2)) using redox and electrochemical methods.
- Evaluation of catalytic activity for bisphenol A removal via periodate activation.
Main Results:
- CO2-assisted pyrolysis redirected biomass carbon to syngas and facilitated secondary oxygenate conversion.
- MnSGB (CO2) exhibited enhanced redox features and lower charge-transfer resistance.
- MnSGB (CO2) achieved >99% bisphenol A removal, demonstrating superior catalytic performance for periodate activation.
Conclusions:
- CO2-assisted pyrolysis offers an energy-efficient route for scalable manganese-biochar composite production.
- The enhanced catalytic activity of MnSGB (CO2) is attributed to Mn-mediated interfacial electron transfer and singlet oxygen generation.
