Nitrogen refining for industry
Nitrogen in waste streams occurs in the form of ammonium or organically bound nitrogen. Circular Values was the first in the Netherlands to see the circular value of this nitrogen developed Nitrogen Refining for industry so that only the excess components are disposed of in concentrated form. The nitrogen is recovered into a liquid inorganic fertilizer such as ammonium sulfate or ammonium nitrate. This results in a high-quality fertilizer substitute. We call this process nitrogen stripping or nitrogen cracking. On several farms in the Netherlands Quadro is already applied for refining manure but this process is also excellent to apply on a large scale for industry.
The process
In the nitrogen stripper / ammonia stripper, ammonium nitrogen (NH4+), present in the thin fraction, is converted into gaseous nitrogen (ammonia, NH3). Ammonia is normally an emission stream, but in this system it is formed in a controlled manner and actually prevents emission. The ammonia passes through columns and is washed to produce ammonium sulfate.
With the Circular Values Industries Nitrogen Refining facility, it is possible to convert up to 85% of the ammonium nitrogen in manure or digestate into a high-quality liquid fertilizer in the form of ammonium sulfate (ASL). The fully automated system ensures efficient use of the plant with limited labor. Nitrogen from residual streams can be refined by heat or pH raising. The efficiency of the system is adjustable and available in different capacities. Each CVI Nitrogen Refining unit can be remotely monitored and controlled by Circular Values Industries. This allows Circular Values Industries' process engineers to monitor your system and ensure proper operation. The solution for industrial companies with nitrogen surpluses and the right step towards a circular future.
