10 good reasons to acidify slurry
Besides a number of environmental benefits acidification of slurry is a solution to which follows a number of other benefits as well.
1. Reduction in ammonia emissions
JH NH4+ slurry acidification systems reduce ammonia (NH3) emissions:
from pig farms (64%)
from cattle farms (50%)
from slurry storage
when distributing slurry on field (60 %)
2. Increased nitrogen and full sulfur supply on fields
Acidification of slurry is based on a chemical principle. In slurry there is ammonia (NH3), which is a gas that evaporates, and ammonium (NH4+), which is bound in the slurry in the form of nutrients. Between these two NH3 and NH4+ there is a chemical balance.
By lowering the pH of the slurry with sulfuricacid the balance of NH3 and NH4+ shift towards ammonium (NH4+). Ammonium is a liquid form of N and does not evaporate but stays in the slurry.
The ammonia (NH3) that would before pollute the atmosphere is present in acidified slurry as additional nitrogen and will result in an increase in agricultural output – up to 15 %.
Sulfuric acid provides full sulfur supply in fields and by using acidified slurry one will also experience minimal manganese deficiency.
3. Better animal welfare
When ammonia emissions are reduced directly from the source inside the stable you can continue to use drained floors, providing better animal welfare. Furthermore, the concentration of ammonia in the stable air is significantly reduced. Ammonia in gas form is especially aggressive to mucous membranes and respiratory organs.
4. Better working environment
Less ammonia in the stable air is a great advantage to the working environment. High concentrations of ammonia in the stable air is harmful to humans, especially on respiratory organs.
5. Less greenhouse gases emissions
Acidification inhibits the methane forming bacteria. Therefore significantly less greenhouse gases evaporate from acidified slurry.
6. Fully automatic slurry management
Acidified slurry is more homogoneous and easier to handle. With acidified slurry in the channels it is nomore necessary to pull plugs or sluice slurry out manually. The JH NH4+ system handles all slurry management between the barn and storage automatically.
7. Higher capacity when separating slurry
Acidified slurry is easier to handle and thus separate, as it is more homogeneous. The sulfuric acid also helps to break the membranes of the slurry solids, which helps separating the thick and thin part of slurry from each other easily.
8. Less pest flies problems
Pest flies are not able to live and multiply in acidified slurry, which is frequently in motion. No need to establish slurry flies used to control pest flies.
9. No floating layers / fixed covers on slurry storage needed
Danish environmental regulations permit farmers with JH NH4+ slurry acidification system to not establish floating layers or fixed covers on storage tanks, with a few exceptions – special natural areas and buildings.
10. Hose spreading of slurry
When using acidified slurry you do not have to worry about loosing nitrogen to the atmosphere while applying slurry to fields. The acidified slurry can be spread with hoses on grassland, saving injection and thus less damage to the grass from the blades and lanes and more optimally used slurry spreading hours.