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michka:research:microbial_fuel_cells [2014-07-11 10:31] – michkamichka:research:microbial_fuel_cells [2014-10-02 12:51] – michka
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 [[http://www.treehugger.com/slideshows/gadgets/make-microbial-fuel-cell/page/1/#slide-top|This design]] is made from one container, sludge at the bottom, smart gel proton exchanger on top of it, and clean water on the very top. No air pump, but lower performances. Something like charcoal is used as an electrode material. [[http://www.treehugger.com/slideshows/gadgets/make-microbial-fuel-cell/page/1/#slide-top|This design]] is made from one container, sludge at the bottom, smart gel proton exchanger on top of it, and clean water on the very top. No air pump, but lower performances. Something like charcoal is used as an electrode material.
  
-====Experiments====+===High-School Project Presentation===
  
-===One Container Design===+[[http://prezi.com/aw1kjprkgphz/tpe-comment-augmenter-et-utiliser-la-production-denergie-a-partir-dexcrement-de-cheval/|This is]] a presentation made by a group of students on low-tech horse-crap-based MFCs, with actual power figures in it (about 100mW for 120g of horsecrap).
  
-   * Wiring as electrode.+====Experiments====
  
-==Results== +   * [[michka:research:microbial_fuel_cells:Nantes1|Nantes1]] 
- +   * [[michka:research:microbial_fuel_cells:Bruxelles2|Bruxelles2]]
-   * Peak voltage at 100mV, drops to 60, stable. +
-   * Voltage changes with oxygenation - + 10 mV. +
- +
-===One Container in Crate Design=== +
- +
-    +
- +
-==Why ?== +
- +
-Augemented cathode surface area & reduced water layer width for oxygen access. +
- +
-===Crate Paper Design=== +
- +
-   * Flattened aluminium can as electrode. +
-   * Thick paper sheet as PEM. +
- +
-==Why?== +
- +
-   * Reduced PEM width. +
-   * Augmented electrode (both) surface area. +
- +
-==Results== +
- +
-   * Negative voltage when putting a rock on cathode to maintain it in water. +
- +
-===Two Containers Design=== +
- +
-Hard-drive metal box as electrode material. +
- +
-===Other results=== +
- +
-   * Two multimeter electrodes directly in water: about 30 mV. +
-   * One mutimeter electrode on aluminium can dipped in water, one directly in water: about 30 mV. +
-     * If water is not clean, voltage increases up to 100 mV. +
-   * Two multimeter electrodes in the mud: 10-80 mV depending on location.+
  
 ====Design Improvements Ideas==== ====Design Improvements Ideas====
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    * Does the efficiency drops if we use flat electrodes from dead batteries ?    * Does the efficiency drops if we use flat electrodes from dead batteries ?
 +
 +====Other kinds of batteries====
 +
 +   * Molten salt batteries
 +     * Donald Sadaway, TED
 +     * Zebra battery
 +   * Rhubarb battery
  • michka/research/microbial_fuel_cells.txt
  • Last modified: 2018-04-26 12:44
  • by michka