Rio San Pedro sediment + 0.5g FeSO4 + filter paper.
First of all, our light column is starting to redden. In addition we can see how the Green area has increased due to algae are growing.
We can also see that the black zone is bigger because there are microorganisms that breathe sulphate and generate hydrogen sulfide, this reacts with iron present and precipitates iron sulphate (black area).
In the top of the bottle, the bubbles are due to carbon dioxide.
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| Day 72 |
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| Day 72 |
On the other
hand, dark column Little oranges stains appeared at the Surface because of the
FeO2 synthezised by the bacteria.
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