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.
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