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Microbial fuel cell (MFC) using benethic mud samples
Moderators: AmyCowen, kgudger, bfinio, MadelineB, Moderators
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fdaquioag
- Posts: 1
- Joined: Fri Oct 28, 2011 1:26 am
- Occupation: parent of 6th rade student
- Project Question: working with biological agents
- Project Due Date: 11/10/2011
- Project Status: I am conducting my research
Microbial fuel cell (MFC) using benethic mud samples
i would like to know if someone can simplify the circuitry, for tesing the fuel cells to collect data. If could, send me a drawing or simplified instructions in hooking up this circuit. Would appreciate if anyone could help us on this projecy,thank you.
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kgudger
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Re: Microbial fuel cell (MFC) using benethic mud samples
Hello and welcome to the forum:
The testing circuit is just a resistor between the two electrodes. Is this the correct project? https://www.sciencebuddies.org/science- ... p026.shtml
Please give us some more detail. Thanks.
Keith
The testing circuit is just a resistor between the two electrodes. Is this the correct project? https://www.sciencebuddies.org/science- ... p026.shtml
Please give us some more detail. Thanks.
Keith
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deleted-71588
- Former Expert
- Posts: 1297
- Joined: Mon Oct 16, 2006 11:47 am
Re: Microbial fuel cell (MFC) using benethic mud samples
What are you trying to measure?
Predicting the MFC's internal resistance at any given operating point is a challenge. You often have to play with a wide range of external load resisters so that you match MFC's internal resistance at its operating point at any given time within an order of magnitude. If you have too high an external load resistance value, you will shut down the MFC's process. If you have too low an external load resistance, any meter readings will be less than the noise floor of the meter.
IMO: The easiest measurement is a DC current measurement where you just use the meter on a DC current scale as the load.
Measuring the open circuit voltage is another handy thing to know; however, you don't want to leave the MFC with no load for very long.
Predicting the MFC's internal resistance at any given operating point is a challenge. You often have to play with a wide range of external load resisters so that you match MFC's internal resistance at its operating point at any given time within an order of magnitude. If you have too high an external load resistance value, you will shut down the MFC's process. If you have too low an external load resistance, any meter readings will be less than the noise floor of the meter.
IMO: The easiest measurement is a DC current measurement where you just use the meter on a DC current scale as the load.
Measuring the open circuit voltage is another handy thing to know; however, you don't want to leave the MFC with no load for very long.
-Craig