One-Time Acidification of Slurry: What Is the Most Effective Acid and Treatment Strategy?

Acidification of slurry is a common practice to reduce ammonia and methane emissions. Sulfuric acid usually used for this process. However, has been criticized due the high sulfur input into soils. Therefore, objective study show effectiveness one-time acidification with alternative acids also in combination other treatment strategies. The amount as well change pH value during storage were investigated. For most variants, strong increase occurred within first ten days after acidification. Mineral (sulfuric or hydrochloric acid) resulted lower compared organic (lactic, acetic, citric acid). Under anaerobic conditions, remained significantly lower. addition glucose before values week, but long term, conversion carbonate led higher values. A previous separation process was able acid. Although not that acidification, it much faster stronger afterwards buffer capacity separated slurry. long-term reduction achieved by 3.0, associated an increased On basis results, can be recommended sulfuric