Can we use Nanotechnology to clean up our water samples?
May 26, 2006
Objective
The goal of this experiment is:
Chemicals:
FeSO4 iron (II) sulfate hydrate, 450 mg solution dissolved in 1 L water.
Acidify with concentrated sulfuric acid or nitric acid in order to bring the solution to a pH between 2 and 4. CAUTION
30 % hydrogen peroxide, H2O2
Titanium dioxide, TiO2
Fenton's reagent.
1. Collect 100 mL of sampled water in 100 mL erlenmeyer flask - each pair will be assigned one sampling point..
2. Add 10 mL of Fenton's reagent and 10- 20 mL of 30 % hydrogen peroxide, H2O2.
3. Wait approximately an hour until the bubbling stops before testing for dissolved oxygen. Note: If there are no bubbles, first add some more concentrated acid and then more Fenton's reagent.
Titanium Dioxide
1. Collect 100 mL of sampled water in 100 mL capped storage flask - again each pair will be assigned one sampling point..
2. Add a covering of titanium dioxide to the bottom of the storage flask - approximate weight to be determined..
3. Repeat steps 1 and 2. The first sample will be left out in the sun in the amphitheater until Monday and the second sample will be placed under a UV light for a day.