Your browser doesn't support javascript.
High-quality and easy-to-regenerate personal filter.
Fraenkl, Max; Krbal, Milos; Houdek, Jakub; Zmrhalova, Zuzana Olmrova; Prokes, Borivoj; Hejda, Petr; Slang, Stanislav; Prikryl, Jan; Ondracek, Jakub; Makes, Otakar; Kostyk, Juraj; Nasadil, Petr; Malcik, Pavel; Zdimal, Vladimir; Vlcek, Miroslav.
  • Fraenkl M; Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic.
  • Krbal M; Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic.
  • Houdek J; Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic.
  • Zmrhalova ZO; Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic.
  • Prokes B; Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic.
  • Hejda P; Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic.
  • Slang S; Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic.
  • Prikryl J; Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic.
  • Ondracek J; Institute of Chemical Process Fundamentals, v.v.i., Academy of Sciences of the Czech Republic, Rozvojova, Prague, Czech Republic.
  • Makes O; Institute of Chemical Process Fundamentals, v.v.i., Academy of Sciences of the Czech Republic, Rozvojova, Prague, Czech Republic.
  • Kostyk J; Institute of Chemical Process Fundamentals, v.v.i., Academy of Sciences of the Czech Republic, Rozvojova, Prague, Czech Republic.
  • Nasadil P; Textile Testing Institute, Brno, Czech Republic.
  • Malcik P; Textile Testing Institute, Brno, Czech Republic.
  • Zdimal V; Institute of Chemical Process Fundamentals, v.v.i., Academy of Sciences of the Czech Republic, Rozvojova, Prague, Czech Republic.
  • Vlcek M; Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic.
PLoS One ; 17(6): e0268542, 2022.
Article in English | MEDLINE | ID: covidwho-1987130
ABSTRACT
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.
Subject(s)

Full text: Available Collection: International databases Database: MEDLINE Main subject: Respiratory Protective Devices / COVID-19 Type of study: Experimental Studies Limits: Humans Language: English Journal: PLoS One Journal subject: Science / Medicine Year: 2022 Document Type: Article Affiliation country: Journal.pone.0268542

Similar

MEDLINE

...
LILACS

LIS


Full text: Available Collection: International databases Database: MEDLINE Main subject: Respiratory Protective Devices / COVID-19 Type of study: Experimental Studies Limits: Humans Language: English Journal: PLoS One Journal subject: Science / Medicine Year: 2022 Document Type: Article Affiliation country: Journal.pone.0268542