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--- michka:research:microbial_fuel_cells:bruxelles2 [2014-09-26 10:01] – michka
+++ michka:research:microbial_fuel_cells:bruxelles2 [2014-09-26 10:04] – michka
@@ Line 5: / Line 5: @@
 I failed a three batches of [[http://www.treehugger.com/slideshows/gadgets/make-microbial-fuel-cell/page/3/#slide-top|salt bridges]] before managing to have one stable made.
-===The right protocol===
+The right protocol:
    * Mix 200 ml water, 5 g of agar and 75g of salt in a cooking pan.
    * Bring it to a boil while mixing regularly.
@@ Line 16: / Line 15: @@
    * Place them in the fridge for a few hours
-===What not to do===
+What not to do:
    * Use hot water from a kettle and mix everything in a cold pot
      * This induces a very uneven mix, where salt and agar are not well dissolved
@@ Line 70: / Line 68: @@
    * Current is sensitive to oxygen presence, and is very low - about 0.4 mV when activated, dropping to 0.1 mV at rest.
    * Power is therefore in the microW range.
+===Conclusion===
+   * Electrode surface area seems an important feature.
+   * Most of the mud in the Tall-Mud design has been sitting here for a week, which may have an influence on community development.
+===Further Designs===
+   * Scale-up the vegetable+compost tea design.
+   * Look for carbon electrodes, which seem more appropriate
+   * Replace salt bridge with paper