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SyreN system

A process to stabilize ammonia from slurry under application through acidification

February 2020
June 2023
Gallery SyreN system 1
Gallery SyreN system 1


SyreN system stabilizes the slurry using the technique of acidification (sulphuric acid) to change ammonia (gas) to ammonium (salt) during application of slurry. This increases the fertilizer value of the slurry and generates a higher crop yield, and reducing the impact on the biodiversity.

  • /
Label Date June 27, 2023
From Denmark
Maturity stage Medium and large scale commercialization
Looking For Network, New clients, Visibility, Funding, Partners, Credibility

The environmental benefits

  • Iincreases the crop yield and reduces fertilizer pollution from industrial farming systems
  • The system has achieved UN and EU BAT standard certification
  • Uses raw fertilizer material in the consumer end, to improve the organic fertilizer utilization.
  • Reduction of 200 kg CO2e pr. ha
  • No additional energy consumption - An increase of 15 to 50 kg (50-70% emission reduction) of ammonium pr. ha plant available - Reduces mineral fertiliser with the same amount
  • 40% increase in plant available phosphorous pr. m3 slurry pr. ha.20% reduction in total P

The Financial benefits

  • x2 return of ROI with 25.000 m3 treated pr. season
  • Legislative compliance

Activity Region

  • /
  • Headquarters
  • Activity

Company Profile


BioCover is specialised in sustainable use of organic fertilisers (slurry) during application to farmland.

View company profile Solution website
Headquarters 6600 Vejen, Denmark

Networking Partner


Thinkers and doers with a mission to improve the quality of lives and our environment through innovation.

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Solutions Associated 11
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator BioCover has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.