1994 Volume 56 Issue 2 Pages 67-74
Dairy cattle feces was degraded aerobically (composted) in the insulated compact reactor with a 1000cm3 capacity. The temperature of the material and the ventilating air, and the oxygen density were measured during the experiment to calculate the heat production and oxygen uptake rate for dairy cattle feces. The results show that an appropriate indicator of biological activity in an early stage of aerobic biodegradation process is not the rate of temperature change of dairy cattle feces, but the rate of heat production or the rate of oxygen uptake of dairy cattle feces. In particular, the rate of temperature change is greatly influenced by the heat capacity of the dairy cattle feces.
