1. Experiments with rapeseed oil
experiments with rapsoil
Experiments with rapeseed oil
For the Comenius project
We are what we eat
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

2. experiments with rapsoil
Saponification
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

3. experiments with rapsoil Theory Chemicals and materials Method
Index
Theory
Chemicals and materials
Method
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

4. experiments with rapsoil
Theory
Soponification: Cleavage of the esterbonds in a fat molecule by potasium hydroxide or sodium hydroxide
Soap
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

5. experiments with rapsoil 200g rapeseed oil
Chemicals
200g rapeseed oil
100ml distilled water
200ml 25% sodium hydroxide (NaOH)
Sodium chloride
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

6. experiments with rapsoil pot
Materials
pot
hot plate with magnetic stirrer
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

7. experiments with rapsoil
Method
The rapeseed oil and the distilled water are heated
in the pot.
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

8. experiments with rapsoil
Method
The solution is stirred and we add the sodium
hydroxide.
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

9. experiments with rapsoil The sodium chloride is added to our product.
Method
The sodium chloride is added to our product.
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

10. experiments with rapsoil
Method
Finally the soap is seperated from water and
glycerol.
The soap can be pressed into shape now.
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

11. experiments with rapsoil
Transesterification
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

12. experiments with rapsoil Theory Chemicals and materials Method
Index
Theory
Chemicals and materials
Method
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

13. experiments with rapsoil
Theory
Transesterification:Concersion of a fatty acid glycerol ester molecule into three fatty acid methyl ester molecules
Biodiesel
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

14. experiments with rapsoil 100ml rapeseed oil
Chemicals
100ml rapeseed oil
30ml methanol
5 sodium hydroxide pellets
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

15. experiments with rapsoil condenser for boiling under backflow
Materials
hot plate with magnetic stirrer
condenser for boiling under backflow
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

16. experiments with rapsoil
Method
The chemicals are placed in the round bottomed flask.
Then we heat to the boil under backflow cooling.
The final step is to separate the resulting biodiesel
from glycerol and water
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

17. Thank you for listening!
experiments with rapsoil
Thank you for listening!
Hohentwiel-Gewerbeschule-Singen/CTA/Germany

18. Anja Bubenheimer Jascha Bandemehr Katharina Dietz CTA Singen, Germany
experiments with rapsoil
Anja Bubenheimer Jascha Bandemehr Katharina Dietz CTA Singen, Germany
Hohentwiel-Gewerbeschule-Singen/CTA/Germany