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michka:research:microbial_fuel_cells [2014-10-03 12:50] – michka | michka:research:microbial_fuel_cells [2014-10-03 13:02] – michka | ||
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(see also [[: | (see also [[: | ||
- | ====Inspirations==== | + | ====Litterature==== |
I started this research by looking for existing quick & dirty designs online. I found two main categories of designs | I started this research by looking for existing quick & dirty designs online. I found two main categories of designs | ||
- | ===Two containers + Air Pump Design=== | + | The **[[http:// |
- | + | ||
- | [[http:// | + | |
An airpump feeds clean water with oxygen for the reduction reaction: protons coming from sludge by the salt bridge, together with electrons coming from sludge by the wires, recombine with oxygen to make water. The airpump allows high current to be produced. | An airpump feeds clean water with oxygen for the reduction reaction: protons coming from sludge by the salt bridge, together with electrons coming from sludge by the wires, recombine with oxygen to make water. The airpump allows high current to be produced. | ||
- | Performances: | + | Performances: |
- | ===One container Design=== | ||
- | [[http:// | + | The **[[http:// |
- | ===High-School Project Presentation=== | ||
- | [[http:// | + | I also found a [[http:// |
====Experiments==== | ====Experiments==== | ||
Line 38: | Line 34: | ||
====Design Improvements Ideas==== | ====Design Improvements Ideas==== | ||
- | |||
- | ===Airpump=== | ||
- | |||
- | * Is the air pump giving more than what it pumps in terms of energy ? | ||
- | * Could we make a mechanical airpump coupled with a windmill ? | ||
- | * Could we improve the cathode design to remove the airpump ? | ||
===Sludge=== | ===Sludge=== | ||
* Could we use compost tea as a sludge source ? | * Could we use compost tea as a sludge source ? | ||
- | * See [[michka: | + | * See [[michka: |
* Does it also work with usual soil ? | * Does it also work with usual soil ? | ||
+ | * A brief experiment in [[michka: | ||
* How can we keep feeding the sludge, to make the fuel cell operation continuous ? | * How can we keep feeding the sludge, to make the fuel cell operation continuous ? | ||
Line 55: | Line 46: | ||
* Does the efficiency drops if we use flat electrodes from dead batteries ? | * Does the efficiency drops if we use flat electrodes from dead batteries ? | ||
+ | * Actually, the [[michka: | ||
+ | |||
+ | ===Airpump=== | ||
+ | |||
+ | * Is the electric air pump giving more energy than what it pumps ? | ||
+ | * Most probably not. | ||
+ | * Could we make a mechanical airpump coupled with a windmill ? | ||
+ | * Probably. But how useful would this be ? We should maybe focus on gathering the energy of the windmill. | ||
+ | * Could we improve the cathode design to remove the airpump ? | ||
+ | |||
+ | ====Related==== | ||
- | ====Other kinds of batteries==== | + | Joule Thief |
+ | Other battery designs: | ||
* Molten salt batteries | * Molten salt batteries | ||
* Donald Sadaway, TED | * Donald Sadaway, TED | ||
* Zebra battery | * Zebra battery | ||
* Rhubarb battery | * Rhubarb battery |