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

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Published on: December 29, 2013

Electricity generation from a floating microbial fuel cell.

Yuelong Huang¹, Zhen He, Jinjun Kan

¹Corrosion and Environmental Effects Laboratory (CEEL), The Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089-0241, USA.

Bioresource Technology

|March 27, 2012

Summary

This summary is machine-generated.

A novel floating microbial fuel cell (FMFC) achieved a peak power output of 390 mW/m³ after 125 days. Its performance is primarily influenced by anode polarization resistance, offering potential for remote power generation.

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Area of Science:

Environmental Science
Electrochemistry
Renewable Energy

Background:

Microbial fuel cells (MFCs) offer a sustainable energy source.
Traditional MFCs often face limitations related to installation depth and environmental conditions.

Purpose of the Study:

To design and evaluate the long-term performance of a floating microbial fuel cell (FMFC).
To investigate the factors influencing power output and internal resistance in an FMFC.

Main Methods:

A floating microbial fuel cell (FMFC) was operated and monitored for 153 days.
Anode and cathode polarization resistances were measured over time.
Internal resistance and maximum power output were analyzed in relation to operating time.

Main Results:

The FMFC demonstrated a gradual increase in power output, reaching a maximum of 390 mW/m³ at 125 days.
Anode polarization resistance (R(p)(a)) varied significantly, reaching a minimum at 125 days, while cathode polarization resistance (R(p)(c)) remained stable and low.
Changes in internal resistance and maximum power were primarily attributed to variations in R(p)(a).

Conclusions:

The FMFC's performance is significantly influenced by anode characteristics over time.
Unlike sediment MFCs, the FMFC's design is not limited by water depth, enabling deployment in various aquatic environments.
The FMFC shows promise for powering low-consumption electronic devices in remote offshore or aquatic locations.