Slurry Acidification as a Tool to Reduce Ammonia Emissions

Abstract

Ammonia emissions are a worldwide major environmental concern. In 2017, ammonia emissions in the European part of Russia amounted to 80.9 thousand tons, of which up to 56.9 thousand tons came from agriculture. The main source of ammonia in this sector is the farm animal/poultry manure (slurry) utilisation technologies. Slurry acidifi cation technology (SAT) is one of the methods to reduce ammonia emissions. (Research purpose) To assess the potential application of this technology in the Russian part of the Baltic Sea catchment area within the NorthWest Federal District of the Russian Federation. (Materials and methods) The area under study included Republic of Karelia, Kaliningrad, Leningrad, Novgorod and Pskov Regions. The authors considered the statistical data on the farm animal stock and the slurry output in the pilot area. The dynamic pattern of pig slurry pH was experimentally determined. The economic effi ciency of slurry acidifi cation technology was calculated for two functioning livestock complexes. (Results and discussion) According to statistical data, around 11.8 million tons of animal/poultry manure is produced in the pilot area annually, including around 7.4 million tons of slurry, which could potentially be acidifi ed. Three SAT options-in-house, in-storage and in-fi eld application-were considered for the Russian conditions. The main limiting factors for SAR application were identifi ed. The SAT introduction costs and economic benefi ts were compared. (Conclusions) The prospects of SAT introduction in the pilot region were estimated. The need for the integrated research under the Russian conditions involving engineers, biologists, soil scientists, ecologists and other specialists, who could prove the feasibility and economic effi ciency of the slurry acidifi cation technology, was established.

Effects of slurry acidification on soil N2O fluxes and denitrification

“…Though the use of acids has proven to be a valid strategy to mitigate NH 3 losses due to slurry spreading (e.g., Emmerling et al., 2020; Kai et al., 2008; Park et al., 2018; Sindhöj et al. 2019), a limited number of studies have focused on the potential consequences of acidified slurry applications on N 2 O emissions in soil (e.g., Emmerling et al., 2020; Seidel et al., 2017). In a review on animal slurry acidification, Fangueiro et al.…”

Effect of concentration of deodorizing reagents on the emission of odor-forming substances in pork manure

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