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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

Rechargeable microbial fuel cell based on bidirectional extracellular electron transfer.

Na Chu¹, Lixia Zhang², Wen Hao³

¹Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.

Bioresource Technology

|March 1, 2021

Summary

This study introduces a novel bioelectrode for rechargeable microbial fuel cells (MFCs), enhancing energy storage and recovery efficiency. The developed system shows potential for sustainable bioelectronics and renewable energy applications.

Keywords:

Bidirectional extracellular electron transfer Electroactive microbes Energy storage Microbial electrochemical technology Microbial electrosynthesis

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

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

Published on: December 29, 2013

Area of Science:

Electrochemistry
Microbiology
Renewable Energy

Background:

Rechargeable microbial electrochemical systems offer dual applications in energy storage and bioelectronics.
Conventional systems face limitations in efficiency and stability.

Purpose of the Study:

To introduce a novel bioelectrode for rechargeable microbial fuel cells (MFCs).
To evaluate the performance and efficiency of the bioelectrode in energy storage and recovery.

Main Methods:

Construction of a rechargeable MFC utilizing a bioelectrode with bidirectional extracellular electron transfer.
Performance evaluation through charge/discharge cycles under constant current mode.
Microbial community analysis comparing rechargeable MFC with control.

Main Results:

Enhanced MFC performance with increased charge/discharge cycles.
Maximum energy efficiency of 4.5% and Coulombic efficiency of 29.4% achieved.
Hydrogen (H2) identified as the primary charge carrier; minimal acetate accumulation.
Significant shifts in microbial community composition observed.

Conclusions:

The developed bioelectrode significantly improves rechargeable MFC performance.
This technology demonstrates potential for efficient energy storage and recovery.
Bioelectrode-based systems represent a promising avenue for sustainable bioelectronics.