Electrostatic particle ionization for suppressing air pollutants in cage-free layer facilities

Bist, Ramesh Bahadur; Yang, Xiao; Subedi, Sachin; Ritz, Casey W.; Kim, Woo Kyun; Chai, Lilong

doi:10.1016/j.psj.2024.103494

Cited by 5 publications

(5 citation statements)

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“…In a recent study, a prototype electrostatic precipitator effectively reduced the levels of PM 2.5 and PM 10 up to 97.8% and 99.0%, respectively [40]. Similarly, Bist et al [39] found that the EPI with the longest length had reduced PM 2.5 by 31.7% and PM 10 by 32.7%, respectively. Despite these promising findings, the application of EPI in CF hen houses remains relatively unexplored, necessitating comprehensive research to evaluate its efficacy and practical implementation.…”

Section: Introductionmentioning

confidence: 85%

“…Treating airspace with negative ions naturally attracts and polarizes airborne particles, facilitating their bonding and adhesion to surfaces they encounter. The details of the EPI system were mentioned in [39].…”

Section: Working Mechanism Of Epimentioning

confidence: 99%

“…To measure the LMC, 100 g litter samples were collected weekly from four locations within each room and placed into Ziplock bags. The detailed procedure for LMC analysis is mentioned in [39].…”

Section: Environment Parameter Measurementsmentioning

confidence: 99%

“…Among the emerging technologies, electrostatic charging systems have garnered attention as a potential solution to reduce airborne particles in various experimental and commercial settings [30][31][32][33][34][36][37][38][39]. Electrostatic particle ionization systems utilize electrostatic charges to attract and neutralize airborne particles, providing a promising avenue for mitigating PM in CF henhouses.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, the goal is to evaluate the effectiveness of EPI technology in reducing PM concentration while considering the height at which the technology is placed. Similarly, several studies used 24 h of electric supply [30,31,38,39]. However, it is worth questioning whether running the system 24 h a day is necessary, especially when the birds show no activity during the dark period.…”

Section: Introductionmentioning

confidence: 99%

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Enhancing Dust Control for Cage-Free Hens with Electrostatic Particle Charging Systems at Varying Installation Heights and Operation Durations

Bist,

Yang,

Subedi

et al. 2024

AgriEngineering

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The poultry industry is shifting towards more sustainable and ethical practices, including adopting cage-free (CF) housing to enhance hen behavior and welfare. However, ensuring optimal indoor air quality, particularly concerning particulate matter (PM), remains challenging in CF environments. This study explores the effectiveness of electrostatic particle ionization (EPI) technology in mitigating PM in CF hen houses while considering the height at which the technology is placed and the duration of the electric supply. The primary objectives are to analyze the impact of EPI in reducing PM and investigate its power consumption correlation with electric supply duration. The study was conducted in a laying hen facility with four identical rooms housing 720 laying hens. The study utilized a Latin Square Design method in two experiments to assess the impact of EPI height and electric supply durations on PM levels and electricity consumption. Experiment 1 tested four EPI heights: H1 (1.5 m or 5 ft), H2 (1.8 m or 6 ft), H3 (2.1 m or 7 ft), and H4 (2.4 m or 8 ft). Experiment 2 examined four electric supply durations: D1 (control), D2 (8 h), D3 (16 h), and D4 (24 h), through 32 feet corona pipes. Particulate matter levels were measured at three different locations within the rooms for a month, and statistical analysis was conducted using ANOVA with a significance level of ≤0.05. The study found no significant differences in PM concentrations among different EPI heights (p > 0.05). However, the duration of EPI system operation had significant effects on PM1, PM2.5, and PM4 concentrations (p < 0.05). Longer EPI durations resulted in more substantial reductions: D2—17.8% for PM1, 11.0% for PM2.5, 23.1% for PM4, 23.7% for PM10, and 22.7% for TSP; D3—37.6% for PM1, 30.4% for PM2.5, 39.7% for PM4, 40.2% for PM10, and 41.1% for TSP; D4—36.6% for PM1, 24.9% for PM2.5, 38.6% for PM4, 36.3% for PM10, and 37.9% for TSP compared to the D1. These findings highlight the importance of prolonged EPI system operation for enhancing PM reduction in CF hen houses. However, utilizing 16 h EPI systems during daylight may offer a more energy-efficient approach while maintaining effective PM reduction. Further research is needed to optimize PM reduction strategies, considering factors like animal activities, to improve air quality and environmental protection in CF hen houses.

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Section: Introductionmentioning

confidence: 85%

Section: Working Mechanism Of Epimentioning

confidence: 99%

Section: Environment Parameter Measurementsmentioning

confidence: 99%