Quadro Nitrogen Recovery

With the Farmcubes Quadro Nitrogen Refining, 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 manure can be refined by heat or pH increase. This process is also called ammonia/nitrogen stripping or nitrogen cracking.  The solution for livestock farms with a nitrogen surplus.

The Farmcubes Quadro is the first of its kind. The Farmcubes Quadro has been used on many farms and our years of experience, combined with our flexibility to respond to the latest developments, ensure that every Quadro always offers an optimal operation and efficiency. Efficiency can also be adjusted by means of settings. Every Farmcubes installation is equipped with all the necessary network functionality for remote support by our service staff. This enables our support team to monitor the installation and processes remotely and guarantee optimum operation. An additional advantage is that you can also access your Quadro remotely.

Circular Values offers leasing opportunities for its
nitrogen refining products and also various subsidies apply, which
can be even more economically beneficial for the dairy farmer. With a Farmcubes Quadro nitrogen stripper, you are not only making your operations more sustainable, you are reducing costs and you can make your own money by producing fertilizer on your own land.

Suitable for your dairy farm

At Circular Values, we understand that every dairy farm is unique, which is why we can offer Quadro with different options to suit your situation. As a result, Quadro includes only the options you need, so you never pay unnecessarily for features you don't use. For example, we offer Quadro in different capacities to fit the size of your dairy farm and manure production. If you want to strip with heat, we have several options to provide your Quadro with this energy. And if you have an existing biogas plant, for example, Quadro can be made suitable for it.

Finally, the nitrogen cracker comes as a stationary and mobile refiner. The mobile version makes it ideal for contractors who can use it to serve the land-based livestock industry where the purchase of a stationary nitrogen stripper is not cost-effective.

Farmcubes Quadro is currently available in
the following versions:

  • Quadro 1 with a capacity up to 1 m³/h  
  • Quadro 2 with a capacity of up to 2 m³/h (Datasheet NL / EN / DE)
  • Quadro 4 with a capacity of up to 4 m³/h
  • Quadro 6 with a capacity of up to 6 m³/h

Quadro summary:


  • Production of fertilizer substitute (ASL)
  • Reduction in disposal costs of slurry
  • Less logistics
  • Circular solution
  • Closing loops
  • Reduction of ammonia emission



  • Both cold and hot stripping (10-70 °C)
  • Stationary or mobile unit
  • Optionally available with insulation for outdoor installation
  • Optionally available with heat pump and/or solar panels
  • Remote control/monitoring
  • Low maintenance costs
  • Efficiency is adjustable
  • Lease possibilities
  • VAMIL/MIA applicable



  • Available to desired capacity
  • Efficiency up to 85% ammonium removal
  • Suitable from particles <1mm in thin fraction

Receive a customized quote for your situation with

Chat via WhatsApp
Heeft u een vraag?

Welkom bij Farmcubes.

Heeft u interesse in Farmcubes voor uw agrarisch bedrijf?
Neem hier direct contact op met ons en wij zullen zo snel mogelijk reageren.

Met vriendelijke groet,
team Farmcubes