Cadiz, 8A: Winogradsky, Group A8 Biotechnology UCA

Hello Winobloggers.

We are a couple of students who are on their first year in Biotechnology in UCA. I'm going to talk about my Winogradsky column's evolution for these weeks.

First of all, our Winogradsky column has the following composition:

Sand from Rio San Pedro's beach (Cadiz).

Water from a lagoon. Water takes up about 3 centimeters of the bottle.

Iron sulfate

Pieces of filter paper

The mixture was made by this form:

Firstly, we put the sand into the bottle. It takes up about 2/3 of the total bottle's volume

The bottle was recolected in Laboratory 8 of Science's faculty (Pto Real) on the date of: 4- March- 2015 . Now, the bottle is ubicated at my home in El Pto de Sta Maria. It has the following ubication:




The bottle is ubicated in my terrace's bedroom.

As we cas see in the following photos, the bottle has changed into an orange colour . The reason could be that microorganismes have used the iron of the FeSO4 to obtain energy.

Here you have some of the photos I've taken of the bottle:

              

As we can see, the bottle's colour has not changed for the weeks , but it does not mean that it won´t be more changes during the following weeks. We have to wait and we have to have patience.

This is everything for now.

Bye Bye