Gaseous emissions and modification of slurry composition during storage and after field application: Effect of slurry additives and mechanical separation.

The aim of the study was to evaluate the impact of slurry treatment by additives (EU200 (EU200), Bio-buster (BB), JASS and sulphuric acid (HSO)) and mechanical separation on the physical-chemical characteristics, gaseous emissions (NH, CH, CO and NO) during anaerobic storage at ∼20 °C (experiment 1) and NH losses after field application (experiment 2). The treatments studied in experiment 1 were: whole slurry (WS), WS+HSO to a pH of 6.0, WS+EU200 and WS+BB.