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Methods for understanding microbial community structures and functions in microbial fuel cells: a review
1Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
Bioresource Technology
|September 17, 2014
Summary
Researchers can optimize microbial fuel cells (MFCs) by combining various techniques. Understanding electrochemically active bacteria through genomic and post-genomic methods enhances power output for practical energy recovery.
Area of Science:
- Microbiology
- Electrochemistry
- Bioenergetics
Background:
- Microbial fuel cells (MFCs) convert organic matter to electricity using microorganisms.
- Maximizing MFC power output requires deeper understanding of electrochemically active bacteria.
- Current knowledge gaps hinder practical MFC applications.
Purpose of the Study:
- To review microbiological and electrochemical techniques for MFC research.
- To guide researchers in selecting appropriate methods for studying MFCs.
- To highlight strategies for enhancing MFC power generation.
Main Methods:
- Review of pre-genomic and genomic techniques (e.g., 16S rRNA phylogeny, metagenomics).
- Analysis of post-genomic techniques (e.g., metatranscriptomics) for functional characterization.
- Integration of isotope-assisted phylogenetic analysis for linking taxonomy and metabolism.
Main Results:
- Genomic techniques reveal microbial community structure and genetic potential.
- Post-genomic methods enable functional analysis of electrode biofilms via gene expression.
- Isotope analysis connects microbial identity with metabolic processes.
Conclusions:
- Combining electrochemical, phylogenetic, and genomic/post-genomic techniques improves understanding of extracellular electron transfer.
- This integrated approach facilitates MFC process optimization for increased power output.
- Further research using these combined methods is crucial for advancing MFC technology.
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