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michka:research:microbial_fuel_cells:marseille3 [2014-10-03 12:31] – michka | michka:research:microbial_fuel_cells:marseille3 [2014-10-08 14:39] (current) – michka | ||
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====Experiment " | ====Experiment " | ||
+ | |||
+ | These experiments have been conducted during the open workshops of the [[http:// | ||
====Crate Design #1==== | ====Crate Design #1==== | ||
- | __Design features__: | + | __Design features__ |
- | * **Substrate**: | + | |
+ | {{ :michka: | ||
+ | //Clay sampling spot - Niolon, France.// | ||
+ | |||
+ | |||
+ | * **Substrate**: | ||
* Volume: 80*30*2 cm3 | * Volume: 80*30*2 cm3 | ||
* **Container**: | * **Container**: | ||
Line 15: | Line 22: | ||
* Surface: 70*5 cm2 | * Surface: 70*5 cm2 | ||
- | __Performances__: | + | __Performances__ |
* **Voltage**: | * **Voltage**: | ||
* **Current**: | * **Current**: | ||
Line 23: | Line 31: | ||
====Crate Design #2==== | ====Crate Design #2==== | ||
+ | __Design features__ | ||
- | Design features: | ||
* **Substrate**: | * **Substrate**: | ||
* Volume: 80*30*2 cm3 | * Volume: 80*30*2 cm3 | ||
Line 36: | Line 44: | ||
* Surface: 70*5 cm2 | * Surface: 70*5 cm2 | ||
- | __Performances | + | __Performances__ |
+ | |||
+ | Performances | ||
* **Voltage**: | * **Voltage**: | ||
* **Current**: | * **Current**: | ||
- | __Performances | + | Performances |
* **Voltage**: | * **Voltage**: | ||
* **Current**: | * **Current**: | ||
- | __Performances | + | Performances |
- | * **Voltage**: | + | * **Voltage**: |
- | * **Current**: | + | * **Current**: |
+ | * Strange measurement behavior: | ||
+ | * Voltage starts at 80 mV, and builds up to 130 mV in about 15 minutes. | ||
+ | * Current starts at 0.7mA and drops to 0.3mA in about 15 minutes too. | ||
+ | |||
+ | Performances on Day3: | ||
+ | * **Voltage**: | ||
+ | * **Current**: | ||
+ | |||
+ | Performances on Day4: | ||
+ | * **Voltage**: | ||
+ | * **Current**: | ||
+ | |||
+ | **Peak Power Measured**: 375 microW. | ||
+ | |||
+ | **Max (stable) Power Measured**: around 350 microW. | ||
+ | |||
+ | ====Pile Microbienne Marseillaise==== | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | __Design features__ | ||
+ | |||
+ | {{ : | ||
+ | //Marine sediments sampling spot - Marseille, France// | ||
+ | |||
+ | |||
+ | * **Substrate**: | ||
+ | * Volume: 0.5L | ||
+ | * **Container**: | ||
+ | * **Proton Exchange Membrane**: a piece of cardboard. | ||
+ | * Surface: the bottle' | ||
+ | * **Water**: seewater. | ||
+ | * **Anode**: copper covered with carbon, extracted from a dead DELL PC battery found in the LFO storage space. | ||
+ | * Surface: 50*5 cm2 | ||
+ | * **Cathode**: | ||
+ | * Surface: 20*5 cm2 | ||
+ | |||
+ | __Performances__ | ||
+ | |||
+ | Performances on Day0: | ||
+ | * **Voltage**: | ||
+ | * **Current**: | ||
+ | |||
+ | Performances on Day1: | ||
+ | * **Voltage**: | ||
+ | * **Current**: | ||
+ | |||
+ | **Peak Power Measured**: 770 microW | ||
+ | |||
+ | __Observations__ | ||
+ | |||
+ | Even though the multimeter was connected the wrong way (+ on anode, - on cathode), we first had positive (and quite high) current and voltage value. Is this due to remanant charges from the PC battery ? | ||
+ | |||
+ | ==Conclusion== | ||
+ | |||
+ | From both these expriments and those conducted in Bruxelles, we can conclude that the MFC behavior improves and stabilizes with time. | ||
+ | |||
+ | As the "pile micrboienne marseillaise" | ||
+ | |||
+ | Using newspaper or cardboard as a Proton Exchange Membrane seems fine. | ||
- | **Max Power Measured**: 65 microW | + | New long-term experiments should be conducted to test other parameters, including more broadly available electrode materials. |