Effect of ISPAD Anaerobic Digestion on Ammonia Volatilization from Soil Applied Swine Manure
Figure 1
Wind tunnels used for the laboratory manure land application simulations to measure NH3 volatilization. The wind tunnel is set on a spreading pan holding 50 mm of experimental soil. Fresh air is introduced through the bottom left hand pipe, circulated through the body at a speed of 3 m s−1 and exited through the top right hand pipe. To measure NH3 volatilization, a known portion of the outlet air was bubbled through an acid solution.
