Emissies uit verse drijfmest, urine en feces van rundvee, varkens en kalveren: Onderzoek in klimaatrespiratiecellen naar emissies van ammoniak, lachgas, koolstofdioxide, methaan en niet-methaan vluchtige organische componenten, waaronder vluchtige vetzuren

In this study the effect of rapid manure removal from barns on carbon and nitrogen emissions from manure from dairy cattle, pigs and calves was determined. There is little knowledge about the decomposition rate of organic matter and the formation of methane in the first hours or days after excretion. The research was conducted in climate respiration cells, from which CH4, CO2, NH3, N2O emissions and emission of non-methane volatile organic compounds (NMVOC), including volatile fatty acids (VFA), were measured. Nine fresh manure fractions were examined: slurry, feces and urine from cattle, pigs and calves. Based on the results of this study, it can be concluded that CO2 and NH3 emissions can be reduced by removing the manure from the barn within 8 – 10 hours after excretion. Although the peak in emissions of CH4 and N2O (and possibly NMVOC, including VFA) was not observed in this study and probably occurs later, the emission of CH4 and N2O can also be greatly reduced when manure is removed from the barn within 8 – 10 hours after excretion compared to the emission factors of regular manure. The Biogenic Methane Potential (BMP) analyses show that slurry and feces have high potential for biogas production.