Efficiency of action of natural minerals at emission of greenhouse gases in substratum of dung

Abstract

The purpose. To determine efficiency of natural minerals at emission of greenhouse gases in dung substratum of cows under mesophilic conditions of anaerobic fermentation (in vitro). Methods. Researches are lead with the use of chemical, analytical and mathematical-statistical methods. They maintained fixed temperature for each stage of metagenesis (hydrolysis, oxidation, acetogenesis, metanogenesis) at mesophilic regimen of fermentation in the probed material and monitored the pH level of the medium. In experiment the probed substratum was intensely mixed by shaking containers. In dung mass of cows they determined acidity by means of pH-meter Tur N5170 (Poland). In the probed substratum they determined the level of carbonic gas by N.V. Chibisova technique, and CH4 — by calculation method. Results. On the basis of the lead researches it is fixed that importation into the probed substratum of natural minerals — vermiculite, pearlite and zeolite — increases enzymatic activity of cow dung on 9; 7 and 6% accordingly in comparison to control (dung without preparations). Natural mineral glauconite (in vitro) reduces the level of CO2 and CH4 on 5% in dung substratum as compared to the control. Conclusions. Experimentally it is proved that more effective impact on metanogenesis process was application of vermiculite which increases evolvation of carbonic gas and methane in cow dung, at the same time natural mineral glauconite deactivates fermentation and selection of greenhouse gases and consequently, glauconite can be used as means for decreasing blow out of greenhouse gases.