EVALUATION OF METHANE AND CARBON DIOXIDE EMISSIONS FROM LIVESTOCK WASTE, COMPOST, AND BIOGAS SLUDGE

Abstract

: Livestock sector contributes to greenhouse gases (GHGs) emission especially methane and
carbon dioxide gases that produced from digestive system and manure of ruminants. GHGs mitigation was
conducted by cattle manure waste management through biogas and compost technologies. In this study we
evaluated methane and carbon dioxide emissions from untreated and treated cattle manure in cattle farm
group of Ngudi Mulyo, Yogyakarta. Test equipment that used in this study is 25-liters chamber to isolate gas
emissions from naturally digested untreated and treated cattle manure for eight weeks. Gas samples were
analyzed by gas chromatography (GC). The results shows that buried cattle manure produced the highest
methane emission of 173100 ppm while compost from cattle manure produced of 2963.33 ppm. There is the
decrease in methane emission of compost and sludge biogas from cattle manure (98.18 and 98.10%
respectively) compared to fresh cattle manure. The highest carbon dioxide emission was produced by fresh
cattle manure (580215.371 ppm). Conversion of cattle manure to biogas sludge and compost could reduce
carbon dioxide emission of 80.85 and 86.23% respectively compared to fresh cattle manure. We concluded
that cattle manure waste management by biogas and compost technologies are important role in GHGs
mitigation especially in livestock sector.