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→Electric circuit with Soilbacteria
Freya Probst (talk | contribs) |
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==Electric circuit with Soilbacteria== | ==Electric circuit with Soilbacteria== | ||
:Anerobic bacteria that live in the soil oxidate substrates during their metabolism for winning energy. During this exothermic reaction, electrons and protons are freed. In our battery, we placed an anode (graphite, copper, zinc, gold) in the mud and a cathode (differing from the metal of the anode) into water | :Anerobic bacteria that live in the soil oxidate substrates during their metabolism for winning energy. During this exothermic reaction, electrons and protons are freed. In our battery, we placed an anode (graphite, copper, zinc, gold) in the mud and a cathode (differing from the metal of the anode) into water | ||
:The mud container is closed, so there is no air that could take away the electrons. Instead, these would be collected by our anode. | |||
Our protons would search their way through the tube filled with agar that connected the containers, which would act as membrane between those. These then would be caught by our cathode. | :The mud container is closed, so there is no air that could take away the electrons. Instead, these would be collected by our anode. | ||
:Our protons would search their way through the tube filled with agar that connected the containers, which would act as membrane between those. These then would be caught by our cathode. | |||
[[File:Agar as membrane in microbial battery.JPG |500px]] | [[File:Agar as membrane in microbial battery.JPG |500px]] | ||