University of Thessaly

Group number:9 (Iliadis Mixalis, Ioannou Eleni)

Incubation: light

Winogradksy column

Hello Winobloggers,

 The experiment took place in the area of Volos Anavros. We used:  one plastic bottle of 1.5l,  one plastic bottle of 0.5l, one egg and Some small paper pieces.  We left our columns in a light place and took some photos during the days of the experiment.

Day 1.

At the first day of our experiment we placed our column in a bright spot.

Day 4.

After 4 days we noticed some changes in the colour of the water. It became more yellow.

 

Day 23.

At the 23rd day, we noticed that the top layer of the liquid started to become a little red.

Day 32.
The next noticeable changes are at the 32nd day, when we observed that a thicker crust of calcium carbonate has created on the top of the liquid.

          

Day 47.

The black color of the sediment  is caused by the presence of FeS from the anaerobic respiration.

           

            

Day 55.

We can see the black-purple colour of the sediment in the whole bottle and the cloudy water because of the anaerobic conditions in the column.