A 1-year feasibility study was conducted, aiming to explore the effectiveness of UV light for simultaneous treatment of odor, odorous VOCs and airborne pathogen emissions from swine operations. Several operating parameters were tested in laboratory scale including: UV wavelength, presence of photocatalyst, the effects of UV dose, and the effects of air relative humidity and air temperature. Removal and conversion of odor, target gases responsible for causing swine odor such as odorous sulfur-containing volatile organic compounds (SVOCs), volatile fatty acids (VFAs), phenolics, ammonia, and airborne pathogens was tested. Up to 100% removal of odor, 100% of S-VOCs, 100% VFAs, and 100% phenolics, and up to 65% of ammonia was achieved with optimized UV treatment. Treatments involving 185 nm UV band and treatments involving the presence of photocatalyst (TiO2) were more efficient in removal and conversion of odorous gases and odor in flowing air. In addition, greater than 99% inactivation was achieved for both the swine influenza virus (SIV) and bovine viral diarrhea virus (BVDV) which were both highly susceptible to 254 nm UV inactivation. The extrapolated estimate of the operational cost of treatment would range from $0.15 to $0.60 per finisher pig based on the lab scale results from this research. This figure represents significantly lower cost compared with the cost of biofiltration or air scrubbing. These results warrant further investigations involving testing the effects of dust on UV treatment and experiments in pilot scale. For more information please contact – Dr. Jacek Koziel, Department of Agricultural and Biosystems Engineering, Iowa State University at [email protected] or 515-294-4206.