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Self-standing Electrochemical Set-up to Enrich Anode-respiring Bacteria On-site

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Published on: July 24, 2018

Improved cathode for high efficient microbial-catalyzed reduction in microbial electrosynthesis cells.

Huarong Nie¹, Tian Zhang, Mengmeng Cui

¹Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA.

Physical Chemistry Chemical Physics : PCCP

|July 25, 2013

Summary

Researchers enhanced microbial electrosynthesis cells (MECs) using nickel nanowires on graphite cathodes. This innovation boosted microbial-catalyzed reduction rates, significantly increasing acetate production from carbon dioxide.

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Last Updated: May 9, 2026

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Waste Water Derived Electroactive Microbial Biofilms: Growth, Maintenance, and Basic Characterization

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Published on: December 29, 2013

Area of Science:

Electrochemistry
Microbiology
Materials Science

Background:

Microbial electrosynthesis cells (MECs) facilitate microbial electrochemical interactions.
Optimizing cathode performance is crucial for enhancing bio-reduction efficiency in MECs.

Purpose of the Study:

To develop a novel cathode material for improved microbial-catalyzed reduction in MECs.
To enhance the interfacial area and microbial biofilm interaction on the cathode surface.

Main Methods:

Coating graphite electrodes with a porous network of nickel nanowires.
Utilizing Sporomusa for microbial-catalyzed bio-reduction of carbon dioxide.
Quantifying acetate production and electron recovery rates.

Main Results:

A 2.3-fold increase in bio-reduction rate compared to untreated graphite.
Production of approximately 282 mM day(-1) m(-2) of acetate.
Achieved 82 ± 14% electron recovery in acetate.

Conclusions:

Nickel nanowire-coated graphite cathodes significantly improve MEC performance.
The enhanced cathode design boosts microbial-catalyzed CO2 reduction and acetate production.
This advancement offers a promising pathway for efficient microbial electrosynthesis.