Control of particulate matter emissions from poultry and pig houses

López, M.C.

doi:10.4995/thesis/10251/8501

Cited by 4 publications

(3 citation statements)

References 87 publications

(147 reference statements)

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“…To confirm this, aerosol particles captured on filters were analyzed using SEM, showing that the captured fine particles were roughly 10 µm in size and exhibited a rounded shape, likely originating from sources like bedding material and feed. This finding aligns with previous research suggesting that particles generated from sources like feed and bedding exhibit similar size and shape characteristics [18,30,31].…”

Section: Spatial Aerosol Distributionsupporting

confidence: 92%

Occupational Exposure of Particulate Matter in the Forced Ventilated Broiler House by Working Conditions

Seo,

2023

Preprint

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As broiler farming facilities have become larger and more concentrated in response to external environmental changes, there is a possibility of increased concentrations of fine dust and aerosols inside these facilities due to enclosure. In particular, workers are exposed to high concentrations of organic particulate matter and harmful gases while performing their tasks, and as they age, they become more vulnerable to respiratory diseases. It is essential to directly monitor the concen-trations to which workers are exposed, along with the spatial distribution of aerosols inside broiler house. In this study, we analyzed the regional aerosol concentrations using passive samplers in commercial tunnel-ventilated broiler farms. Simultaneously, we employed active samplers at the height of the workers' breathing zones to monitor real-time aerosol concentrations by particle size along their work routes. Spatial aerosol concentrations generally increased from the inlet to the exhaust in the breathing zone. The average aerosol concentrations were TSP -1,042 µg/m³, PM-10 718 µg/m³, and PM-2.5 137 µg/m³. To analyze the workers' exposure environments, we categorized the tasks in the barn into Static work period (SWP) and Moving work period (MWP) based on video analysis. The results showed that during MWP, fine dust concentrations exceeded the standards by up to 214%. Particularly, during MWP, the concentrations were 1.74 times higher for TSP, 1.40 times higher for PM-10, and 1.22 times higher for PM-2.5 compared to SWP. It was observed that during the movement of workers, physical generation of particles around 10 µm, such as feces, feed, and bedding, occurred due to the movement of chicken, which influenced the aerosol concentration.

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Section: Spatial Aerosol Distributionsupporting

confidence: 92%

Occupational Exposure of Particulate Matter in the Forced Ventilated Broiler House by Working Conditions

Seo,

2023

Preprint

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“…The objective of this article is to review current knowledge on airborne microorganisms from production systems for typical livestock species (swine, poultry and cattle), and their relation to dust. Specifically, in section 2, we identify the sources, species, size distributions, and concentrations of Identifying the source of microorganisms and dust in livestock production systems helps to elucidate how airborne transmission is generated, and ultimately can help to develop and implement strategies that prevent such transmission from beginning (Bull et al, 2006;Cambra-Lopez, 2010). Sources of dust in livestock production systems have been identified and assessed qualitatively and quantitatively (Aarnink et al, 1999;Donham and Gustafson, 1982).…”

Section: Introductionmentioning

confidence: 99%

Airborne Microorganisms From Livestock Production Systems and Their Relation to Dust

Zhao

Aarnink

Jong

et al. 2014

Critical Reviews in Environmental Science and Technology

106

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Large amounts of airborne microorganisms are emitted from livestock production. These emitted microorganisms may associate with dust, and are suspected to pose a risk of airborne infection to humans in vicinity and to animals on other farms. However, the extent to which airborne transmission may play a role in the epidemic, and how dust acts as a carrier of microorganisms in the transmission processes is unknown. The authors present the current knowledge of the entire process of airborne transmission of microorganisms-from suspension and transportation until deposition and infection-and their relation to dust. The sampling and the mitigation techniques of airborne microorganisms and dust in livestock production systems are introduced as well.Airborne Microorganisms and Dust in Livestock Houses 1073 airborne microorganisms and dust from livestock production systems, as well as the factors affecting their concentrations. In section 3, the physical and biological decay of airborne microorganisms and dust during transmission is described. In section 4, the deposition of airborne microorganisms and dust in respiratory tracts, and the infective dose of pathogenic microorganisms to animals are introduced. In section 5, the strategies and techniques for sampling microorganisms and dust in livestock production systems are proposed. In section 6, the mitigation techniques are described.

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“…The aging of agricultural workers raises serious concerns about the health issues resulting from the inhalation of PM, which can lead to respiratory and immune system disorders, as well as conditions such as asthma [10][11][12][13][14][15][16]. Endotoxin-containing PM with a diameter of 10 µm or less can have a significant impact, not only on livestock activity and productivity but also on the health of workers [17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Managemental Impacts on Particulate Matter Emission in Tunnel-Ventilated Broiler Houses

Seo,

2024

Agriculture

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In livestock houses, particulate matter (PM) is a critical factor not only for disease and odor spread but also for the work environment. In particular, workers are exposed to high concentrations of organic particulate matter and harmful gases while performing their tasks, and, as they age, they become more vulnerable to respiratory diseases. This study analyzed the PM concentrations in commercial broiler houses, focusing on the differences in ventilation rates according to the season and the type of work, categorized into a static work period (SWP) and dynamic work period (DWP). In the regional monitoring using gravimetric methods, the average PM concentrations were found to be within acceptable limits, with TSP at 1042 µg/m3, PM-10 at 718 µg/m3, and PM-2.5 at 137 µg/m3. These values did not exceed the recommended exposure limits for inhalable dust at 2400 µg/m3 and respirable dust at 160 µg/m3 in chicken farmers. However, in the personal monitoring using a real-time aerosol spectrometer, it was revealed that the aerosol concentrations during DWP exceeded the standards by up to 214%. Specifically, during DWP, the concentrations were 1.74 times higher for TSP, 1.40 times higher for PM-10, and 1.22 times higher for PM-2.5 compared to SWP. It was observed that during the movement of workers, the physical generation of particles around 10 µm, such as feed and bedding, occurred due to the movement of chickens, which influenced the aerosol concentration.

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Control of particulate matter emissions from poultry and pig houses

Cited by 4 publications

References 87 publications

Occupational Exposure of Particulate Matter in the Forced Ventilated Broiler House by Working Conditions

Occupational Exposure of Particulate Matter in the Forced Ventilated Broiler House by Working Conditions

Airborne Microorganisms From Livestock Production Systems and Their Relation to Dust

Managemental Impacts on Particulate Matter Emission in Tunnel-Ventilated Broiler Houses

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