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Effects of Surrounding Temperature on Antimicrobial Air Filters Coated with Sophora flavescens Nanoparticles

Sim, Kyoung Mi and Lee, Hee Ju and Nho, Chu Won and Bae, Gwi-Nam and Jung, Jae Hee (2014) Effects of Surrounding Temperature on Antimicrobial Air Filters Coated with Sophora flavescens Nanoparticles. Aerosol Science and Technology, 48 (3). pp. 324-332. ISSN 0278-6826. https://resolver.caltech.edu/CaltechAUTHORS:20140221-135914574

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Abstract

Bioaerosols, such as bacterial and fungal cells and their spores, are components of indoor airborne particulate matter and have been associated with human health problems as well as various environmental issues. Natural antimicrobial products have been used in air filters for bioaerosol control. However, natural products may lose some function due to their sensitivity to environmental factors such as temperature and humidity. In this study, we investigated the effects of temperature on antimicrobial fiber filters coated with nanoparticles of a natural product, namely, Sophora flavescens extract. Inactivation efficiency decreased with increasing temperature and treatment time. A quantitative chemical analysis of the filters revealed that the quantities of antimicrobial compounds decreased noticeably, with a consequent decrease in antimicrobial activity. In addition, the S. flavescens nanoparticles on the filter fiber surface melted gradually as treatment time increased at temperatures >100°C. This change in nanoparticle morphology in turn affected the pressure and filtration efficiency of filters, both of which decreased with increasing temperature and treatment time. These results could provide a scientific basis for the improvement of indoor air-quality control using antimicrobial air filters coated with S. flavescens nanoparticles.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1080/02786826.2013.870660DOIArticle
http://www.tandfonline.com/doi/abs/10.1080/02786826.2013.870660PublisherArticle
Additional Information:© 2014 American Association for Aerosol Research. Received: 23 Aug 2013; Accepted: 24 Nov 2013; Accepted author version posted online: 12 Dec 2013; Published online: 21 Jan 2014. This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning, South Korea (2013K000386).
Funders:
Funding AgencyGrant Number
National Research Foundation of Korea (NRF)2013K000386
Issue or Number:3
Record Number:CaltechAUTHORS:20140221-135914574
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140221-135914574
Official Citation:Sim, K. M., Lee, H. J., Nho, C. W., Bae, G.-N., & Jung, J. H. (2013). Effects of Surrounding Temperature on Antimicrobial Air Filters Coated with Sophora flavescens Nanoparticles. Aerosol Science and Technology, 48(3), 324-332. doi: 10.1080/02786826.2013.870660
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43934
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:04 Mar 2014 23:27
Last Modified:03 Oct 2019 06:12

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