Decay of Airborne Bacteria from Cattle Farm Under A-Band Ultraviolet Radiation
Inspired by the effects of solar or UV radiation on the decay of airborne bacteria during their transport, this study investigated the effect of UVA on the decay of airborne bacteria from cattle houses and analyzed the potential use of UVA to reduce indoor airborne bacteria under laboratory conditio...
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| Format: | Article |
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MDPI AG
2024-12-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/14/24/3649 |
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| author | Luyu Ding Qing Zhang Ligen Yu Ruixiang Jiang Chunxia Yao Chaoyuan Wang Qifeng Li |
| author_facet | Luyu Ding Qing Zhang Ligen Yu Ruixiang Jiang Chunxia Yao Chaoyuan Wang Qifeng Li |
| author_sort | Luyu Ding |
| collection | DOAJ |
| description | Inspired by the effects of solar or UV radiation on the decay of airborne bacteria during their transport, this study investigated the effect of UVA on the decay of airborne bacteria from cattle houses and analyzed the potential use of UVA to reduce indoor airborne bacteria under laboratory conditions. Airborne bacteria from the cattle source were generated and released into a small-scale test chamber (1.5 m<sup>3</sup>) with different strategies according to the different objectives in decay tests and simulated sterilization tests. Increasing with the UVA radiation gradients (0, 500, 1000, 1500 μW cm<sup>−2</sup>), the average decay rate of total curable airborne bacteria ranged from 2.7% to 61.6% in decay tests. Under the combination of different UVA radiation intensities (2000 μW cm<sup>−2</sup> in maximum) and radiation durations (60 min in maximum), simulated sterilization tests were conducted to examine the potential use of UVA radiation for air sterilization in animal houses. With the dynamic inactive rate (DIR) ranging from 17.2% to 62.4%, we proved that UVA may be an alternative way to reduce the indoor airborne bacteria in cattle houses if applied properly. Similar effects would be achieved using either a high radiation intensity with a short radiation duration or a low radiation intensity with a long radiation duration. |
| format | Article |
| id | doaj-art-c8eda5e9279340aca11331c795f67328 |
| institution | DOAJ |
| issn | 2076-2615 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj-art-c8eda5e9279340aca11331c795f673282025-08-20T02:55:42ZengMDPI AGAnimals2076-26152024-12-011424364910.3390/ani14243649Decay of Airborne Bacteria from Cattle Farm Under A-Band Ultraviolet RadiationLuyu Ding0Qing Zhang1Ligen Yu2Ruixiang Jiang3Chunxia Yao4Chaoyuan Wang5Qifeng Li6Information Technology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaDepartment of Agricultural Structure and Bioenvironmental Engineering, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, ChinaInformation Technology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaInformation Technology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaInformation Technology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaDepartment of Agricultural Structure and Bioenvironmental Engineering, College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, ChinaInformation Technology Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaInspired by the effects of solar or UV radiation on the decay of airborne bacteria during their transport, this study investigated the effect of UVA on the decay of airborne bacteria from cattle houses and analyzed the potential use of UVA to reduce indoor airborne bacteria under laboratory conditions. Airborne bacteria from the cattle source were generated and released into a small-scale test chamber (1.5 m<sup>3</sup>) with different strategies according to the different objectives in decay tests and simulated sterilization tests. Increasing with the UVA radiation gradients (0, 500, 1000, 1500 μW cm<sup>−2</sup>), the average decay rate of total curable airborne bacteria ranged from 2.7% to 61.6% in decay tests. Under the combination of different UVA radiation intensities (2000 μW cm<sup>−2</sup> in maximum) and radiation durations (60 min in maximum), simulated sterilization tests were conducted to examine the potential use of UVA radiation for air sterilization in animal houses. With the dynamic inactive rate (DIR) ranging from 17.2% to 62.4%, we proved that UVA may be an alternative way to reduce the indoor airborne bacteria in cattle houses if applied properly. Similar effects would be achieved using either a high radiation intensity with a short radiation duration or a low radiation intensity with a long radiation duration.https://www.mdpi.com/2076-2615/14/24/3649airborne bacteriaA-band ultravioletdecay ratedynamic inactive ratelaboratory simulation |
| spellingShingle | Luyu Ding Qing Zhang Ligen Yu Ruixiang Jiang Chunxia Yao Chaoyuan Wang Qifeng Li Decay of Airborne Bacteria from Cattle Farm Under A-Band Ultraviolet Radiation Animals airborne bacteria A-band ultraviolet decay rate dynamic inactive rate laboratory simulation |
| title | Decay of Airborne Bacteria from Cattle Farm Under A-Band Ultraviolet Radiation |
| title_full | Decay of Airborne Bacteria from Cattle Farm Under A-Band Ultraviolet Radiation |
| title_fullStr | Decay of Airborne Bacteria from Cattle Farm Under A-Band Ultraviolet Radiation |
| title_full_unstemmed | Decay of Airborne Bacteria from Cattle Farm Under A-Band Ultraviolet Radiation |
| title_short | Decay of Airborne Bacteria from Cattle Farm Under A-Band Ultraviolet Radiation |
| title_sort | decay of airborne bacteria from cattle farm under a band ultraviolet radiation |
| topic | airborne bacteria A-band ultraviolet decay rate dynamic inactive rate laboratory simulation |
| url | https://www.mdpi.com/2076-2615/14/24/3649 |
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