Winogradsky column lab page!

Welcome to the Winogradsky column lab page! Students from the Departments of Biological Applications and Technology, University of Ioannina and Icthyology and Aquatic Environment, University of Thessaly, Greece and the Microbiology course, Faculty of Sciences, University of Cádiz, Spain, discuss their findings on Winogradsky columns they constructed!

If you want to add a post, please feel free to contact the blog administrators (Hera Karayanni, Sokratis Papaspyrou or Kostas Kormas)!

Καλωσορίσατε στη σελίδα των Winobloggers! Διαδικτυακός τόπος συνάντησης φοιτητών, φοιτητριών και διδασκόντων δύο Τμημάτων από την Ελλάδα: Tμήμα Βιολογικών Εφαρμογών και Τεχνολογιών, Παν/μιο Ιωαννίνων και Τμήμα Γεωπονίας, Ιχθυολογίας και Υδάτινου Περιβάλλοντος, Παν/μιο Θεσσαλίας και ενός από την Ισπανία: Σχολή Θετικών Επιστημών, Πανεπιστήμιο του Cadiz. Παρακολουθούμε, σχολιάζουμε, ρωτάμε, απαντάμε σχετικά με τα πειράματά μας, τις στήλες Winogradsky!

Bienvenidos a la pagina web de los Winobloggers! Aquí los estudiantes y profesores de dos departamentos griegos, el Departamento de Aplicaciones y Tecnologías Biológicas de la Universidad de Ioannina y el Departmento de Agricultura, Ictiología y Sistemas Acuáticos de la Universidad de Thessalia, junto con los estudiantes de Microbiología de la Facultad de Ciencias en la Universidad de Cádiz, se reúnen para observar, comentar, preguntar y responder a preguntas relacionadas con nuestro experimento, la columna Winogradsky.

Winogradksy columns

Winogradksy columns
'In the field of observation, chance only favors the prepared mind' Pasteur 1854

Blog posts

Wednesday, 6 April 2016

UCA_4A-7A_1: Day 14

Río San Pedro sediment + 30 g NaCl + 1.5 g CaSO4 + Paper

The column was prepared the following way: in a container we put some sediment from the river and we mixed it up with all the ingredients. Then, in a plastic bottle we poured some of the mixture with the aid of a funnel. Finally, we poured sediment without anything else to fill ¾ parts of the bottle and some water from the river as well.

On 9th march, two weeks later, we could see for the first time the evolution of the column. Changes were evident, as well as both bottles were different (one of them has been receiving daylight, column 1, whilst the other one has not, column 2).

On the one hand, regarding the column 1, we can see there is a black product in the bottom of the bottle and also the part of it that has not received light directly. This is due to the breathing of some microorganisms that transform calcium sulphate into iron sulphate. It is observed an orange product in the back of the column too, which is iron oxide. Lastly, just add that we saw a few small bubbles of air on the surface of the sediment which comfirms the existence os microorganisms (probably seeweed).

On the other hand, comparing column 1 to column 2, we can tell remarkable differences. Mainly, the iron sulphate is more spread out to the whole bottle, and there is hardly any iron oxide. As well as in column 1, we have seen bubbles in the surface.

No comments:

Post a comment