Hey guys! I'm going to be writing a series of blogs about my science fair proposals.
1. Construct a mfc as previously described. Soil samples will be collected 5 cm below ground, and will be immediatly transferred to the anode after dampening with water. The cell will be incubated at 25 - 30 degrees celcius. Multimeter readings will be taken after a stable current is acheived.
Notes: a few innovations will be applied; in the anode, a tube will be attached to a bottle to deliver substrates by gravitational drip. The tube will be placed next to the biofilm, or where the electrode base is. Another tube will be attached to a container filled with water to remove excess gas from the anode. The whol mfc will be placed on top of a large plastic container to catch any possible leaks.
Methods to reduce internal resistance: reduce distance between electrodes, increase ion concentrations in salt bridge (increase conductivity). Considerations to use graphite rods for electrodes will be investigated.
Part II will be in the next blog!
The proposals are due next class :(.
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