Rio San Pedro sediment + 0.5g FeSO4 + filter paper
Hi there. We are a group of three people from the University
of Cadiz in Spain and our we are going to prepare one Winogradsky column with
plastic bottle.Our Winogradsky columns is composed of sediment from San Pedro
river, cellulose (filter paper), water and ferrous sulfate (FeSO4)
First of all, we filled ¾ parts of the bottle with sediment.
Then, we added cellulose (filter paper), 0,5 g of FeSO4 and water. Our
conditions to analyze the development and generation of microorganisms are
lighting.
Day 14
After two weeks…
The column shows a black sediment at the bottom. At the top
of the bottle we can see small black spots due to the sulfur of iron (FeS). Also
we can see orange lines, this is due to the oxides of iron sulfate
We will come back with some changes!
Hi. Do you have more black spots at the top or the bottom? I also see a lot of green spots. What are these?
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