Open AccessSimultaneous Treatment of Odorants and Pathogens Emitted from Confined Animal Feeding Operations (CAFOs) by Advanced Oxidation Technologies
Author(s) -
Jacek A. Kozieł,
Yael Laor,
Jeffrey J. Zimmerman,
Robert Armon,
Steven J. Hoff,
Uzi Ravid
Publication year - 2009
Language(s) - English
Resource type - Reports
DOI - 10.32747/2009.7592646.bard
Subject(s) - odor , biofilter , data scrubbing , ammonia , ozone , environmental science , pulp and paper industry , environmental chemistry , chemistry , photocatalysis , sulfur , volatile organic compound , waste management , environmental engineering , organic chemistry , engineering , catalysis
A feasibility study was conducted, aiming to explore the potential effectiveness of UV/TiO2/O3 photooxidation technologies for simultaneous treatment of odorant and pathogen emissions from livestock and poultry operations. Several key parameters were tested in laboratory (US) and semi-pilot (Israel) scale conditions including: the effects of light energy dose (treatment time and light intensity), relative humidity and air temperature, UV wavelength, presence of photocatalyst (TiO2) and the presence of ozone. Removal and conversion of odor, target gases (sulfur-containing volatile organic compounds S-VOCs, volatile fatty acids (VFAs), phenolics, and ammonia), and airborne pathogens was tested. Up to 100% removal (below method detection level) of S-VOCs, VFAs, and phenolics, the overall odor, and up to 64.5% of ammonia was achieved with optimized treatment. Treatments involving deep UV band (185 nm) and photocatalyst (TiO2) were more efficient in removal/conversion of odorous gases and odor. The estimate of the operational cost of treatment was based on measured emissions of several odorous VOCs from full scale, commercial swine farm ranges from $0.15 to $0.59 per finisher pig. This figure represents significantly lower cost compared with the cost of biofiltration or air scrubbing.