Reducing the emission of harmful gases from pig manure using different doses of biodestructors

Abstract

The anthropogenic impact of the functioning of livestock complexes on the environment is caused by the release of gaseous air pollutants into the atmosphere, including harmful gases such as methane (CH4), carbon dioxide (CO2), ammonia (NH3), hydrogen sulfide (H2S), nitrogen oxide (NO) and nitrous oxide (N2O). The latter cause environmental degradation and have a negative impact on the climate balance of the planet. Therefore, the basis of the planned research was to evaluate the effectiveness of different doses of "Scarabei" and "Vodohrai Chystyi Khliv" biodestructors on the emission of harmful gases from pig manure in vitro. In the process of conducting experimental studies, it was established that the addition of "Scarabei" and "Vodohrai Chystyi Khliv" biodestructors to pig waste helps to reduce the level of CH4 emissions up to 14.4% and 22.3%, NH3 up to 23.7% and 39.7%, H2S up to 22.2% and 38.2%, CO2 up to 23.4% and 35.6%, NO up to 14.6% and 23.2%, respectively. Simultaneously, with the reduction of emissions of the studied gases, biodestructors also provide a lower level of pH, i.e., its shift to the acidic side up to 5.54 ("Scarabei") and 5.12 ("Vodohrai Chystyi Khliv"), against 6.2–6.5 – in the control. Thus, the results obtained indicate the feasibility of using the studied biodestructors, such as "Scarabei" and "Vodohrai Chystyi Khliv" at a dose of 40 g/m3 for lower emissions of harmful gases, both when storing manure in storage facilities (lagoons) and directly in the pig keeping premises, which will prevent the negative impact of intensive pig production on the environment.