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Updated: Jun 28, 2026
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10:01
Protein Film Infrared Electrochemistry Demonstrated for Study of H2 Oxidation by a [NiFe] Hydrogenase
Published on: December 4, 2017
Pyrogenic Carbon Structures Determined Electron Transfer Mechanism Enhancing Iron Autotrophic Denitrification: Role
Mingxiu Hou1, Xushun Gu1, Yuanyuan Fan1
1State Key Laboratory of Green Papermaking and Resource Recycling, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
Environmental Science & Technology
|June 27, 2026
Summary
Pyrogenic carbon
Area of Science:
- Environmental Science
- Biogeochemistry
- Materials Science
Background:
- Pyrogenic carbon's electrochemical properties influence the iron cycle.
- Mechanisms of structure-dominated electron transfer in iron autotrophic denitrification (IAD) are unclear.
Purpose of the Study:
- Investigate how pyrogenic carbon's structural evolution impacts electron transfer.
- Elucidate the effects on iron-nitrogen transformation processes in IAD.
Main Methods:
- Analyzed pyrogenic carbon structures and their influence on electron transfer.
- Quantified nitrogen removal and microbial community changes under different carbon structures.
- Measured electron donating capacity and Fe(III) reduction rates.
Main Results:
- Oxygen-containing functional groups enhanced electron transfer, increasing nitrogen removal by 1.67-fold and boosting IAD-related microbial activity.
- Graphitic structures improved electrical conductivity but led to iron passivation and a 54.86% decrease in nitrogen removal.
- High abundance of oxygen-containing functional groups facilitated Fe(III) reduction and ensured long-term iron utilization.
Conclusions:
- Pyrogenic carbon's structure critically dictates its efficacy in mediating IAD.
- Oxygen-containing functional groups promote efficient electron transfer and nitrogen removal.
- Graphitic structures can hinder IAD due to iron passivation.
Keywords:
Electron transferIron autotrophic denitrificationIron cyclePyrogenic carbonStructural characteristicsMore Related Videos
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