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michka:research:microbial_fuel_cells:marseille3 [2014-10-01 16:14] – created 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: topsoil gathered from La Friche' | + | |
- | * Container: crate, covered with a transparent garbage plastic bag. | + | {{ :michka: |
- | * Proton Exchange Membrane: printer paper with low amount of ink. | + | //Clay sampling spot - Niolon, France.// |
- | * Water comes from La Friche' | + | |
- | * Anode: copper covered with carbon, extracted from a dead DELL PC battery found in the LFO storage space. | + | |
+ | * **Substrate**: topsoil gathered from La Friche' | ||
+ | * Volume: 80*30*2 cm3 | ||
+ | * **Container**: crate, covered with a transparent garbage plastic bag. | ||
+ | * **Proton Exchange Membrane**: printer paper with low amount of ink. | ||
+ | * Surface: 80*30 cm2 | ||
+ | * **Water** comes from La Friche' | ||
+ | * **Anode**: copper covered with carbon, extracted from a dead DELL PC battery found in the LFO storage space. | ||
* Surface: 70*5 cm2 | * Surface: 70*5 cm2 | ||
- | * Cathode: copper covered with less carbon, extracted from the same battery. | + | * **Cathode**: copper covered with less carbon, extracted from the same battery. |
* Surface: 70*5 cm2 | * Surface: 70*5 cm2 | ||
+ | |||
+ | __Performances__ | ||
+ | |||
+ | * **Voltage**: | ||
+ | * **Current**: | ||
+ | |||
+ | **Max Power Measured**: 3.75 microW | ||
====Crate Design #2==== | ====Crate Design #2==== | ||
+ | |||
+ | __Design features__ | ||
+ | |||
+ | * **Substrate**: | ||
+ | * Volume: 80*30*2 cm3 | ||
+ | * **Container**: | ||
+ | * **Proton Exchange Membrane**: three to four overlapping sheets of newspaper, covered in ink. | ||
+ | * Surface: 80*30 cm2 | ||
+ | * **Water**: mainly rainwater from the mudsource, with some tap water (0.5L) to complement - maybe chlorinated. | ||
+ | * **Anode**: copper covered with carbon, extracted from a dead DELL PC battery found in the LFO storage space. | ||
+ | * Surface: 70*5 cm2 | ||
+ | * **Cathode**: | ||
+ | * Surface: 70*5 cm2 | ||
+ | |||
+ | __Performances__ | ||
+ | |||
+ | Performances on Day0: | ||
+ | * **Voltage**: | ||
+ | * **Current**: | ||
+ | |||
+ | Performances on Day1: | ||
+ | * **Voltage**: | ||
+ | * **Current**: | ||
+ | |||
+ | Performances on Day2: | ||
+ | * **Voltage**: | ||
+ | * **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. | ||
+ | |||
+ | New long-term experiments should be conducted to test other parameters, including more broadly available electrode materials. |