Ferric iron Fe3 Substrate Waste product Common environmentsS

Ferric iron (Fe3+)

Substrate?

Waste product?

Common environments?

Solution

3Fe(s) + 4H2O (g) -----------------> Fe3O4 (aq) + 4 H2 (g)

Substrate : any denitrifying bacteria

Waste product : denitrification is important in biological wastewater treatment where it is used to reduce the amount of nitrogen released into the environment.

Complete denitrification is an environmentally significant process because some intermediates of denitrification ( nitric and nitrous oxide) are important greenhouse gases that react with sunlight and ozone to produce nitric acid, a component of acid rain.