N2 Applied have developed a technology that enables local production of fertiliser from liquid organic substrates such as slurry or digestate using only air and electricity. The technology adds nitrogen from the air into the liquid substrate and increases the nitrogen content. The amount of crop available nitrogen is generally doubled and the pH is lowered, which reduces ammonia emissions during storage and after field application. After treatment the ammonium and nitrate content is stable, allowing for more precise crop available N applications.
Applying plasma treated slurry or digestate leads to a higher crop yield compared to applying untreated slurry. There are no net soil-acidifying effects of enriched slurry or digestate. Methane emissions are also inhibited by the plasma treatment. The organic carbon and nitrogen content and other important crop nutrients (P, K, Mg, Ca, S) are retained in the fertiliser.
The solution provides on-farm emission reductions in terms of reduced emissions of methane and ammonia, as well as eliminating odour. Reducing ammonia loss prevents nitrogen pollution both directly to the air and indirectly to watercourses by nitrogen downfall. The elimination of methane emissions and the reduction of need to buy in chemical fertilisers substantially lowers the carbon footprint on-farm.
The benefits of improving slurry and digestate with the N2 Unit can be summarised as follows:
The below video further explains our technology, together with the problems it solves: