High-quality and easy-to-regenerate personal filter

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00013251%3A_____%2F22%3AN0000001" target="_blank" >RIV/00013251:_____/22:N0000001 - isvavai.cz</a>

Alternative codes found

RIV/67985858:_____/22:00557398 RIV/00216275:25310/22:39919088

Result on the web

<a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0268542" target="_blank" >https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0268542</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1371/journal.pone.0268542" target="_blank" >10.1371/journal.pone.0268542</a>

Result language

angličtina

Original language name

High-quality and easy-to-regenerate personal filter

Original language description

Proper respiratory tract protection is the key factor to limiting the rate of COVID-19 spread and providing a safe environment for health care workers. Traditional N95 (FFP2) respirators are not easy to regenerate and thus create certain financial and ecological burdens; moreover, their quality may vary significantly. A solution that would overcome these disadvantages is desirable. In this study a commercially available knit polyester fleece fabric was selected as the filter material, and a total of 25 filters of different areas and thicknesses were prepared. Then, the size-resolved filtration efficiency (40–400 nm) and pressure drop were evaluated at a volumetric flow rate of 95 L/min. We showed the excellent synergistic effect of expanding the filtration area and increasing the number of filtering layers on the filtration efficiency; a filter cartridge with 8 layers of knit polyester fabric with a surface area of 900 cm2 and sized 25 × 14 × 8 cm achieved filtration efficiencies of 98% at 95 L/min and 99.5% at 30 L/min. The assembled filter kit consists of a filter cartridge (14 Pa) carried in a small backpack connected to a half mask with a total pressure drop of 84 Pa at 95 L/min. In addition, it is reusable, and the filter material can be regenerated at least ten times by simple methods, such as boiling. We have demonstrated a novel approach for creating high-quality and easy-to-breathe-through respiratory protective equipment that reduces operating costs and is a green solution because it is easy to regenerate.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

30304 - Public and environmental health

Project

<a href="/en/project/LM2018103" target="_blank" >LM2018103: Center of Materials and Nanotechnologies - Research Infrastructure</a><br>

Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

PLoS ONE

ISSN

1932-6203

e-ISSN

—

Volume of the periodical

17

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

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UT code for WoS article

000832307900029

EID of the result in the Scopus database

2-s2.0-85131772607