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Microorganism-ionizing respirator with reduced breathing resistance suitable for removing airborne bacteria

Title
Microorganism-ionizing respirator with reduced breathing resistance suitable for removing airborne bacteria
Authors
Park M.Son A.Chua B.
Ewha Authors
손아정
SCOPUS Author ID
손아정scopus
Issue Date
2018
Journal Title
Sensors and Actuators, B: Chemical
ISSN
0925-4005JCR Link
Citation
Sensors and Actuators, B: Chemical vol. 276, pp. 437 - 446
Keywords
Airborne microorganismsBacteriaBreathing resistanceCorona ionizerIonizerRespirator
Publisher
Elsevier B.V.
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
In this paper, we have demonstrated the feasibility of using microorganism-ionizing respirators with reduced breathing resistance to remove airborne bacteria. Using a miniaturized corona ionizer and two pairs of separator electrodes, airborne bacteria were ionized and removed from the airflow. Two microorganism-ionizing respirator designs were experimentally evaluated with flow rates ranging from ∼10 to 20 L/min and yielded airborne bacterial removal efficiencies of ∼75%–100%. Further, they were in close agreement with the analytical airborne particle removal efficiencies, at a similar range of flow rates. These flow rates also correspond to the breathing rates of standing and walking adults. More importantly, the breathing resistance could be reduced by more than 50% for flow rates of ∼200 L/min. Using manganese (IV) oxide coated mesh, the ozone concentration in the air outflow was reduced to less than 0.1 ppm, at a flow rate of ∼20 L/min, thus enabling safe use. The power consumption was less than 1 W. © 2018 Elsevier B.V.
DOI
10.1016/j.snb.2018.08.133
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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