As the slurry treated with Eminex is stored for a long time, lower pH values ​​arise, which shift the NH ₄ ⁺ ↔ NH ₃ in the slurry more towards ammonium and can thereby somewhat limit the outgassing potential of ammonia. Furthermore, correct manure management with subsequent ground-level manure application must be implemented.

Project results

The fatty acid analyzes show an increased occurrence of organic acids such as acetic, propionic and butyric acid. This can lead to negative effects on olfactory perception, but this could not be demonstrated in this experiment (see olfactory results).

Methane emissions have been clearly reduced by using Eminex. The gas concentrations during the measurement period showed a highly significant difference in favor of the treated manure. This result is shown even more clearly by converting it into units of quantity. The absolute amount of methane was reduced from 0.464 kg to 0.052 kg per storage container, which corresponds to an 88.8% reduction in methane release.

Furthermore, the addition of Eminex® can also reduce CO ₂ emissions to a moderate extent. On the other hand, the reduction in nitrous oxide release is clear, although at a very low level from 5.3 to 1.4 liters per storage container, but this cannot be neglected ₂

₄ , CO ₂ and N ₂ O, the amount of ammonia released increased slightly However, this can be explained by the significantly higher ammonium content of the treated manure and the temporarily higher pH value compared to raw manure.

In addition to stopping methane production, the product was also able to prevent the formation of a floating blanket. Only a thin, leathery skin covered the slurry, which was immediately broken through and stirred in during the homogenization process.

The olfactory examination showed no significant difference between the raw manure and the manure treated with Eminex. The result of the weekly odor determination remained relatively balanced over the measurement period of three months, despite the temporary increase in NH ₃ and the sensory active organic acids formed.

Product “Eminex” from AlzChem

The product “Eminex” from AlzChem can currently help to significantly reduce methane emissions during liquid manure storage. Furthermore, the formation of a floating layer is prevented, which on the one hand reduces the time required for homogenization and on the other hand also saves money. In order to analyze the temporarily higher ammonia emissions even more precisely, a specific investigation is required beyond the measurement period of three months. Likewise, no statements can be made about the effect on the soil, soil life, plant growth or any emissions that may arise after application. Further field tests are recommended for this purpose.