Thesis
Evaluation of a prototype recirculating ventilation system in swine production: Effects on inhalable and respirable dust concentrations
University of Iowa
Master of Science (MS), University of Iowa
Spring 2022
DOI: 10.17077/etd.006371
Abstract
Livestock production buildings, such as cattle, swine, turkey, and chicken provide a secured global food source. Modern United States (U.S.) swine production primarily remains in enclosed buildings. However, swine production buildings have minimal ventilation during winter months which increases the concentrations of dust and gases. In this study, the performance of a trailer-based prototype recirculating ventilation system (RVS) that used filtration in combination with ultraviolet light was evaluated in swine production using a “treatment room” and “control room” study design. This study was conducted during the winter of 2020 (January to March) and 2021 (January to March) in an educational swine finishing facility. This study was conducted in two finishing rooms within the swine production building: (1) finishing production room with the prototype ventilation system (treatment room) and (2) finishing production room without the prototype ventilation system (control room). Over two years, the inhalable and respirable dust concentrations for the treatment and control rooms were observed. The mean inhalable and respirable dust concentrations for the treatment room were 2.77 and 0.34 mg/m3, respectively. The mean inhalable and respirable dust concentrations for the control room were 2.67 and 0.36 mg/m3, respectively. The RVS provided a 6% reduction in respirable dust concentration compared to the control room. However, there was no statistically significance in dust concentrations between the treatment and control rooms. Future studies should apply multiple linear regression to determine what variables (i.e., CO2, outdoor temperature, animal occupancy, animal weight) can predict aerosolized dust concentrations.
Details
- Title: Subtitle
- Evaluation of a prototype recirculating ventilation system in swine production: Effects on inhalable and respirable dust concentrations
- Creators
- Kelsey Strandberg
- Contributors
- Matthew Nonnenmann (Advisor)Patrick O'Shaughnessy (Committee Member)Brandi Janssen (Committee Member)
- Resource Type
- Thesis
- Degree Awarded
- Master of Science (MS), University of Iowa
- Degree in
- Occupational and Environmental Health
- Date degree season
- Spring 2022
- DOI
- 10.17077/etd.006371
- Publisher
- University of Iowa
- Number of pages
- vii, 36 pages
- Copyright
- Copyright 2022 Kelsey Strandberg
- Language
- English
- Description illustrations
- color illustrations, tables, graphs
- Description bibliographic
- Includes bibliographical references (pages 31-36).
- Public Abstract (ETD)
- Livestock production buildings, such as cattle, swine, turkey, and chicken provide a secured global food source. Modern United States (U.S.) swine production primarily remains in enclosed buildings. However, swine production buildings have minimal ventilation during winter months which increases the concentrations of dust and gases. Higher concentrations of dusts and gases can pose health risks for swine workers as well as the animals. This study evaluated a ventilation system in a swine production building by collecting dust samples from a room with the ventilation system and from a room without the ventilation system. The room with the ventilation system showed a 6% reduction in the smaller dust particles compared to the room without the ventilation system. Although dust concentrations were reduced, the difference was not significant. All collected dust samples were below the legal regulations enforced by the Occupational Safety and Health Administration (OSHA).
- Academic Unit
- Occupational and Environmental Health
- Record Identifier
- 9984271153602771
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