Microbial fuel cells

Microbial fuel cells (MFCs) are a type of bio-electrochemical system that harnesses the power of respiring microbes to convert organic substrates directly into electrical energy. This unique technology is offering a sustainable alternative for energy production and waste treatment.

History

The concept of MFCs was first introduced in the early 20th century. However, it was not until the late 20th century that significant research began to be conducted on this technology. The first successful MFC was developed by Potter MC in 1911.

Principle

MFCs work by allowing microbes to oxidize organic matter in the anode compartment of the cell. The electrons produced from this oxidation process are then transferred to the cathode compartment via an external circuit, producing electricity.

Components

MFCs consist of an anode and a cathode compartment, separated by a proton exchange membrane (PEM). The anode compartment is where the microbes oxidize the organic matter, and the cathode compartment is where the electrons are finally accepted to produce water or other byproducts.

Applications

MFCs have a wide range of applications, including wastewater treatment, biosensor development, and energy production. They are particularly useful in areas where there is a need for sustainable and cost-effective energy solutions.

Challenges and Future Directions

Despite the potential of MFCs, there are several challenges that need to be addressed, such as the low power output and the high cost of PEM. Future research is focused on improving the efficiency and cost-effectiveness of MFCs.

See Also

• Bio-electrochemical system
• Biofuel
• Renewable energy

References

Microbial fuel cells Resources
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