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Microbial fuel cells are a new way to generate electricity. They use the activity of bacteria to create a potential difference between two chambers. A wire that runs between these two chambers will have an electric current running along it. You can generate about 1kW from a cubic meter of dirt in this way. (The record is 2.3kW per cubic meter - think you can beat that?) | Microbial fuel cells are a new way to generate electricity. They use the activity of bacteria to create a potential difference between two chambers. A wire that runs between these two chambers will have an electric current running along it. You can generate about 1kW from a cubic meter of dirt in this way. (The record is 2.3kW per cubic meter - think you can beat that?) | ||
Microbial fuel cells can be run on dirt | Microbial fuel cells can be run on dirt, [[wastewater]] or other organic matter. There is a variant called a ''microbial electrolysis cell'' that splits water to create hydrogen, rather than generating electrical current. Another variant is the ''microbial desalination cell''. This takes saltwater, splits the salt into sodium and chlorine ions, and uses the potential difference between these ions to generate electric current. Create clean energy while [[desalination|desalinating]] water - how excellent is that? [http://www.gizmag.com/three-chambered-microbial-desalination-cells/12527/] | ||
In theory, you could build one into your [[compost]] heap and make that generate electricity, though there don't seem to be reports of people doing this. Someone '''must''' try this. | In theory, you could build one into your [[compost]] heap and make that generate electricity, though there don't seem to be reports of people doing this. Someone '''must''' try this. | ||
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* Instructables [http://www.instructables.com/id/Simple-Algae-Home-CO2-Scrubber-Part-III-An-Algae/ Part 1], [http://www.instructables.com/id/Make-a-Microbial-Fuel-Cell-MFC-Part-II/ Part 2] and [http://www.instructables.com/id/Make-a-Microbial-Fuel-Cell-MFC-Part-III/ Part 3]. | * Instructables [http://www.instructables.com/id/Simple-Algae-Home-CO2-Scrubber-Part-III-An-Algae/ Part 1], [http://www.instructables.com/id/Make-a-Microbial-Fuel-Cell-MFC-Part-II/ Part 2] and [http://www.instructables.com/id/Make-a-Microbial-Fuel-Cell-MFC-Part-III/ Part 3]. | ||
* [http://www.youtube.com/user/MicrobialFuelCell Six part YouTube tutorial] | * [http://www.youtube.com/user/MicrobialFuelCell Six part YouTube tutorial] | ||
* You definitely need to watch this [http://techtv.mit.edu/collections/mitei/videos/6081-bruce-logan-bioenergy-production-using-microbial-fuel-cell-technologies lecture by Bruce Logan]. It gives a bunch of tips on how to maximise power production from your microbial fuel cell. It condenses several years of research into an hour. | * You definitely need to watch this [http://techtv.mit.edu/collections/mitei/videos/6081-bruce-logan-bioenergy-production-using-microbial-fuel-cell-technologies lecture by Bruce Logan]. It gives a bunch of tips on how to maximise power production from your microbial fuel cell and also explains how to make microbial electrolysis cells and microbial desalination cells. It condenses several years of research into an hour. | ||
[[CATEGORY: Energy]] | [[CATEGORY: Energy]] | ||
Revision as of 13:17, 31 October 2010
Microbial fuel cells are a new way to generate electricity. They use the activity of bacteria to create a potential difference between two chambers. A wire that runs between these two chambers will have an electric current running along it. You can generate about 1kW from a cubic meter of dirt in this way. (The record is 2.3kW per cubic meter - think you can beat that?)
Microbial fuel cells can be run on dirt, wastewater or other organic matter. There is a variant called a microbial electrolysis cell that splits water to create hydrogen, rather than generating electrical current. Another variant is the microbial desalination cell. This takes saltwater, splits the salt into sodium and chlorine ions, and uses the potential difference between these ions to generate electric current. Create clean energy while desalinating water - how excellent is that? [1]
In theory, you could build one into your compost heap and make that generate electricity, though there don't seem to be reports of people doing this. Someone must try this.
Instructions on building your own
- http://www.microbialfuelcell.org/www/index.php/Tutorials/
- Instructables Part 1, Part 2 and Part 3.
- Six part YouTube tutorial
- You definitely need to watch this lecture by Bruce Logan. It gives a bunch of tips on how to maximise power production from your microbial fuel cell and also explains how to make microbial electrolysis cells and microbial desalination cells. It condenses several years of research into an hour.