Mitigation of Odor and Gaseous Emissions from Swine Barn with UV-A and UV-C Photocatalysis
نویسندگان
چکیده
UV-A (ca. 365 nm wavelength, a.k.a. ‘black light’) photocatalysis has been investigated to comprehensively mitigate odor and selected air pollutants in the livestock environment. This study was conducted confirm performance of on swine farm. The objectives this research were (1) scale-up treatment, (2) evaluate mitigation odorous gases from slurry pit, (3) test different UV sources, (4) effect particulate matter (PM) (5) conduct preliminary economic analyses. We tested at a mobile laboratory-scale capable treating ~0.2–0.8 m3·s−1 barn exhaust air. targeted gaseous emissions significantly mitigated (p < 0.05) up 40% reduction measured odor; 63%, 44%, 32%, 40%, 66% 49% dimethyl disulfide, isobutyric acid, butanoic p-cresol, indole skatole, respectively; H2S; 100% O3; 13% N2O. PM not significant. Formaldehyde levels did change, 21% generation CO2 observed. percent decreased as airborne increased. Simultaneous chemical sensory analysis confirmed that treatment changed overall nuisance character into weaker manure with ‘toothpaste ‘mint’ notes. smell benzoic acid generated likely one compounds responsible for less-offensive UV-treated emissions. Results are needed inform design farm-scale trial, where interior walls can be treated photocatalyst.
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ژورنال
عنوان ژورنال: Atmosphere
سال: 2021
ISSN: ['2073-4433']
DOI: https://doi.org/10.3390/atmos12050585