Abstract
A basic study on the emission of environmental load gasses in a life cycle of the livestock manure, from the excretion to the processing, was carried out. The environmental load gasses were measured in the collection process and treatment process of the manure for two types of livestock house and three types of manure treatments. The concentration of gasses collected with a chamber covering the object manure for a certain time was measured by gas chromatography. The emission rate of carbon dioxide and methane in the collection process of the manure in the free stall type house is 1.2-1.5 times greater than that in the stanchion stall house. In the digestion process of the biogas plant, the emission rate of the environmental load gasses was less than the other composting process. The emission of methane and ammonia from the solid of the digested slurry after solid-liquid separation was considerably remarkable.
