How does denitrification work and simultaneous nitrification/denitrification?
In Wastewater treatment denitrification describes the final step of the conversion from ammonium NH4+ to Nitrogen gas N2. After ammonium is oxidized by microorganisms in a 2-step process ammonium is at first converted to Nitrate NO3-. Nitrate NO3- is still in the wastewater and although is less harmful than ammonia it can still cause diseases. […]
TKN tutorial – What is the difference of ammonia and ammonium
Johan Kjeldahl developed in 1883 a method for the quantitative determination of nitrogen contained in organic substances and inorganic substances – ammonia NH3 and ammonium NH4+. He named the sum of all measured nitrogen TKN – total kjeldahl nitrogen. TKN plus Nitrate Nitrogen (NO3-), Nitrite Nitrogen (NO2-) and Nitrogen gas (N2) can be summarized in […]