UCA_3C_3: DAY 38 - Last results of our column
We are going to evaluate the results obtained in our column on this post.
After six
weeks, we can show a gradient of bacterias in our Winigradsky column.
The lower
layer of the column is filled with desazufricant which use the sulfate ion,
oxidizing it in order to obtain energy.
Then there
is a flow of ions from the lower layers to the upper layers. The upper
bacterias take that oxidized ions and again oxidized them.
The cycle
goes on as the ions get more and more oxidized until it reaches the surface
where it produces a disgusting smell. Basically, we get photosynthetic bacteria
which don’t need oxygen live because they get their energy from the SO4
or the other ions.
Juan, Jesús and Carlos.
Nice colours.
ReplyDelete"desazufricant which use the sulfate ion, oxidizing it in order to obtain energy." Although I do not know what is a "desazufricant", sulfate cannot be oxidised any further. I suppose you are refering to sulfate reducers instead.