Check Email | My Account | Contact Us

Search for on the web shopping
Fri, 29 Mar, 2024
homepage
referrals
signup
help
contact us
education frontpage
a-z of references
general knowledge
places
plants & animals
science

Top links
- Sudoku
- Collectibles
- PSP
Pay as you go
No monthly charges. Access for the price of a phone call Go>

Unmetered

Flat rate dialup access from only £4.99 a month Go>

Broadband
Surf faster from just £13.99 a month Go>

Save Even More
Combine your phone and internet, and save on your phone calls
More Info>

This weeks hot offer
24: Series 5 24: Series 5

In association with Amazon.co.uk £26.97


Nitrification is the biological oxidation of ammonia with oxygen into nitrite followed by the oxidation of these nitrites into nitrates. Nitrification is an important step in the nitrogen cycle in soil. This process was discovered by the Russian microbiologist, Sergei Winogradsky.The oxidation of ammonia into nitrite, and the subsequent oxidation to nitrate is performed by two different bacteria. The first step is done by bacteria of (amongst others) the genus Nitrosomonas. The second step (oxidation of nitrite into nitrate) is (mainly) done by bacteria of the genus Nitrobacter. All organisms are autotrophs, which means that they take carbon dioxide as their carbon source for growth.Nitrification also plays an important role in the removal of nitrogen from municipal wastewater. The conventional removal is nitrification, followed by denitrification. The cost of this process resides mainly in aeration (bringing oxygen in the reactor) and the addition of an extra organic energy source (e.g. methanol) for the denitrification.In most environments both organisms are found together, yielding nitrate as the final product. It is possible however to design systems in which selectively nitrite is formed (the Sharon process).


Chemistry - Contents

Nitrification is a process of nitrogen compound reduction:
  1. NH3 + O2 → NO2 + 3H+ + 2e
  2. NO2 + H2O → NO3 + 2H+ + 2e
Change Text Size:
[A] [default] [A]

go back print page email to a friend make us your home page

about | terms of use | contact us
© 2024 Zazizam.com