The studies carried out draw the following conclusions:
• Slurry acidification reduces ammonia emissions on farms, storage facilities and in soil application.
• Frequent adjustment of slurry pH on pig farms reduces ammonia volatilization by 70%.
• Ammonia losses during slurry storage are reduced by around 50% compared to stored slurry untreated with a natural crust.
• Purification acidification reduces the volatilization of ammonia during and after application in the field.
• During acidification, CO2 and H2S levels increase, but decrease during storage, so there are no significant differences if the whole process is taken into account.
• Different studies show a decrease in methane production between 67 and 90%
(Source: MAGRAMA)