Experimental investigation on biogas production using pig manure and slaughterhouse waste

Abstract

The paper presents solution of organic waste from swine-breeding treatment - the anaerobic digestion and biogas production. The paper presents the findings of experimental investigation of biogas production using pig manure and slaughterhouse wastes were mixed at 95 % : 5 %, 90 % : 10 % and 85 % : 15 % in volume. The paper analyses the quantitative and qualitative composition of biogas: gas content, the concentrations of methane and oxygen. The highest total biogas output (0.097 m3 from 0.003 m3 substrate) was from the mixture of pig manure with slaughterhouse waste at ratio of 19:1. The mixtures of pig manure and slaughterhouse wastes at ratio 9:1 and 17:3 postponed the digestion process in bioreactor. The concentration of methane was reached 60 % after 3 weeks from the beginning the experiment. The highest total amount of valuable biogas (CH4>60 %), which is useful for combustion and energy production – reached from the mixture with higher portion of slaughterhouse waste – 0.075 m3. The analysis amount of produced gas and methane concentration in gas shows that the biogas produced from pig manure and slaughterhouse waste mixed at the ratio of 9:1 is the most efficient for use in energy production.