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Reducing nitrate levels in water with denitrifying bacteria Featured science projectScience project video

Observation

It is observed that the beakers with the denitrifying bacteria added have a faster rate of reduction in the nitrate levels.

 

Beaker marking Nitrate content in the water sample with and without adding bacteria ( mg/liter)
  Start Week 1 Week 2 Week 3
Bacteria 1 45 39 28 12
Bacteria 1 44 38 25 8
Bacteria 1 45 40 31 15
None 1 45 42 38 34
None 2 46 43 40 36
None 3 46 44 42 37

The chart below represents the results of our science fair project

Nitrobacter science fair project

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Complexity level:
8
Project cost ($):
30
Time required:
1 day for preparation, 21 days for observation
Material availability:
Easily found
Safety concerns:

None