The efficiency of influence of different doses of biological preparation of Kapeliukhiv Yarok on the level of emission of harmful gases from chicken manure

Abstract

Goal. To establish the effectiveness of the effects of different doses of the biological product Kapeliukhiv Yarok on the level of gases — methane (CH4), carbon dioxide (CO2), ammonia (NH3), hydrogen sulfide (H2S), and nitric oxide (NO) — from chicken manure during anaerobic digestion (in vitro). Methods. The research was conducted using laboratory, analytical and mathematical-statistical methods. Laboratory methods — to determine the level of emissions of harmful gases from chicken manure using different doses of the biological product Kapeliukhiv Yarok; analytical — to analyze and justify the results; mathematical and statistical — to assess the reliability of results. Results. After the addition of the biological product Kapeliukhiv Yarok to the fermented chicken manure, depending on the dose, a decrease in anaerobic fermentation processes was observed during the study period, which is confirmed by a decrease in pH to 6.9–6.55 units. Simultaneously with the lower pH level in the fermented substrate when using the biological product Kapeliukhiv Yarok, in the studied doses depending on the day of the experiment (20–26-th day) in the mesophilic regime of anaerobic fermentation (in vitro) a decrease was observed in CH4 and CO2 emissions by 11.9–18.1 %, NH3 — 14.7–31.8, H2S — 10.1–18.3, and NO — by 8.4–11.6% relative to control. Conclusions. The effect of different doses — 75 g/m3, 150, and 225 g/m3 of the biological product Kapeliukhiv Yarok on the reduction of gas emissions (CH4, CO2, NH3, H2S, and NO) during anaerobic fermentation (in vitro) has been experimentally proven and scientifically substantiated. Studies indicate the possibility of using the biological product Kapeliukhiv Yarok to reduce emissions of harmful gases and prevent environmental pollution during the storage of manure on poultry farms in storage (lagoons).