Abstract
Goal. To determine the effectiveness of different doses of the biological preparation Meganit Nirbator on the emission of greenhouse gases (CH4, CO2) from chicken manure under the mesophilic regime of anaerobic fermentation (in vitro). Methods. The study was conducted using laboratory, analytical and mathematical methods. Laboratory methods — to establish the level of greenhouse gas emissions from chicken manure when using different doses of the biological preparation Meganit Nirbator; analytical — to analyze and justify the results; mathematical and statistical — to assess the reliability of research results. Results. Based on the results obtained during the study, it was found that the use of the biological product Meganit Nirbator in chicken manure, regardless of the dose activated the process of methanogenesis during the study period, which was confirmed by increasing pH to 9.2 units. Simultaneously with the higher pH value in the studied substrate, the introduction of the biological product Meganit Nirbator into chicken manure during anaerobic fermentation (in vitro) under the mesophilic regime caused a higher yield of methane and carbon dioxide: in the variant I — by 11.8%, in the variant II — by 22.9%, in the variant III — by 27.9%, compared with the control. Conclusions. The effective influence of the biological preparation Meganit Nirbator on the emission of greenhouse gases — methane and carbon dioxide from chicken manure under the mesophilic regime of anaerobic fermentation (in vitro) has been experimentally proved and scientifically substantiated. According to the results of research, the most effective influence on the emission of CH4 and CO2 has a biological product Meganit Nirbator in a dose of 50 ml (16.7%), which increases their quantitative indicators by 22.9%, while increasing the dose of this drug does not significantly affect the yield of the tested gases. Therefore, the biological product Meganit Nirbator can be used as a stimulant to intensify the yield of biogas from chicken manure during processing in biogas plants, thereby minimizing the negative impact of agriculture, in particular poultry, on the environment.
Highlights
варіантAnalyzing results the experimental of researches it was established that in the investigated variants with use of biopreparation «Meganit Nirbator», at the same time with increase pH of the environment in chicken manure at anaerobic digestion (in vitro) under mesophilic regime was observed the growth of an output of greenhouse gases is methane and carbonic gas
The problem of reliable protection of the natural environment from pollutant of manure and other wastes of poultry farms is an extremely relevant task of the present in modern conditions for all regions of Ukraine, due to the active development of agro-industrial complex, that directly related with growth of waste of the branch [1, 5]
The research questions of fermentation processes of agricultural wastes is devoted to scientific researchs of a number of scientists, in which highlights the features of biogas production technologies that based on the use of different temperatures, humidity, microbial mass concentration, duration of reaction, etc. [15, 18, 19, 20]
Summary
Analyzing results the experimental of researches it was established that in the investigated variants with use of biopreparation «Meganit Nirbator», at the same time with increase pH of the environment in chicken manure at anaerobic digestion (in vitro) under mesophilic regime was observed the growth of an output of greenhouse gases is methane and carbonic gas. According to the results of the conducted researches it was established that use of biopreparation «Meganit Nirbator» in different doses 25 ml (8,3 %), 50 (16,7 %) and 75 ml (25 %), activation the process of methanogenesis, causes a higher output of methane and carbonic gas, in comparison with the control by 11,8 %, 22,9 and 27,9 % (Fig. 2, 3)
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