Team 01 Aggelakopoulos Rafail - Antoniou Kostas
Hello Winobloggers,
We are a two person team from university of Thessaly in Greece and we are doing an experiment with the Winogradsky column. In the column we used a plastic bottle (1,5L), which was cut just below the upper part , seawater (~500ml), an egg, pieces of newspaper and an amount of sediment from the beach of Anavros, a region of Volos.
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| Day 1 |
- Day 1
At the first day of the experiment we sealed the column and was held in the dark, inside a locker.
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| Day 2 |
After three days we can see a slight change in the turbidity of the water style. In the sediment we haven't seen any changes yet.
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| Day 3 |
In this photo we can see the water style becoming darker due to the FeS which is released from the anaerobic processes which are taking place inside the column. In the sediment we can see a blackish color at its first layer because of the production of H2S from the iron and sulfide reactions. These reactions are commonly known as anaerobic digestion
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| Day 4 |
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| Day 4 |
In these images we can see the higher rate of the anaerobic processes which is depicted from the black color of the water column. We can also see the black banding which is more intense and deeper. Finally we can see the formation of CaCO3 as a result of the existance of calcium from the eggshell.
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| Day 5 |
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| Day 5 |
In the last images we can see the black zoning going deeper in the sediment. Also we see the formed CaCO3 getting bigger.
And what about the water column turbidity?
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