Taewon T. Han 1, Letao Yang2, Ki-Bum Lee2,3, Gediminas Mainelis1 1 Department of Environmental Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
2 Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
3 College of Pharmacy, Kyung-Hee University, Dongdaemun-gu, Seoul 02447, Republic of Korea
Received:
March 5, 2018
Revised:
June 11, 2018
Accepted:
June 11, 2018
Download Citation:
||https://doi.org/10.4209/aaqr.2018.03.0086
Cite this article:
Han, T.T., Yang, L., Lee, K.B. and Mainelis, G. (2018). Design and Development of a Novel Nanofiber Nasal Filter (NNF) to Improve Respiratory Health.
Aerosol Air Qual. Res.
18: 2064-2076. https://doi.org/10.4209/aaqr.2018.03.0086
HIGHLIGHTS
ABSTRACT
Currently available nasal filters are not well-suited for protecting humans against the fine and ultrafine airborne particles. In this research, we designed and evaluated a novel nanofiber nasal filter (NNF) capable of reducing personal exposure not only to large allergenic particles but also to ultrafine particles, thus reducing respiratory health risks. A new hybrid filter (HF) medium for the NNF was fabricated by overlaying a carbon filter substrate with nylon nanofibers produced by electrospinning. After optimizing the filter’s production parameters, the HF was produced using the Nylon-6 polymer solution with a concentration of 15 wt%, a substrate based on a MERV 5 carbon filter with a density of 61 kg m–3, and a nanofiber surface coating density of 0.72 g m–2 (or 0.54 g m–2 as a second choice). The new HF was tested with fluorescent polystyrene latex beads sized 0.026–3.1 µm and at operating flow rates of 7.5–30 L min–1. The newly developed NNF showed more than a 90% collection efficiency for particles > 1 µm, representing bacteria and molds, and more than a 50% efficiency for particles < 0.5 µm, including ultrafine particles—about a 2.3-fold improvement compared to commercially available nasal filters. Thus, this NNF may serve as a useful tool to minimize our exposure to airborne pollutants.
Keywords:
Personal exposure; Electrospinning; Hybrid filter; Carbon filter; Ultrafine particles.
