title: Filter media properties of mineral fibres produced by plasma spray.
abstract: The purpose of this study was to determine the properties of fibrous gas filtration media produced from mineral zeolite. Fibres were generated by direct current plasma spray. The paper characterizes morphology, chemical composition, geometrical structure of elementary fibres, and thermal resistance, as well as the filtration properties of fibre media. The diameter of the produced elementary fibres ranged from 0.17 to 0.90 μm and the length ranged from 0.025 to 5.1 mm. The release of fibres from the media in the air stream was noticed, but it was minimized by hot-pressing the formed fibre mats. The fibres kept their properties up to the temperature of 956°C, while further increase in temperature resulted in the filter media becoming shrunk and brittle. The filtration efficiency of the prepared filter mats ranged from 95.34% to 99.99% for aerosol particles ranging in a size between 0.03 and 10.0 μm. Unprocessed fibre media showed the highest filtration efficiency when filtering aerosol particles smaller than 0.1 µm. Hot-pressed filters were characterized by the highest quality factor values, ranging from 0.021 to 0.064 Pa(-1) (average value 0.034 Pa(-1)).
authors.affiliation: a Department of Environmental Technology , Kaunas University of Technology , Kaunas , Lithuania.
authors.forename: Tadas
authors.initials: T
authors.lastname: Prasauskas
authors.affiliation: a Department of Environmental Technology , Kaunas University of Technology , Kaunas , Lithuania.
authors.forename: Jonas
authors.initials: J
authors.lastname: Matulevicius
authors.affiliation: a Department of Environmental Technology , Kaunas University of Technology , Kaunas , Lithuania.
authors.forename: Linas
authors.initials: L
authors.lastname: Kliucininkas
authors.affiliation: a Department of Environmental Technology , Kaunas University of Technology , Kaunas , Lithuania.
authors.forename: Edvinas
authors.initials: E
authors.lastname: Krugly
authors.affiliation: b Plasma Processing Laboratory , Lithuanian Energy Institute , Kaunas , Lithuania.
authors.forename: Vitas
authors.initials: V
authors.lastname: Valincius
authors.affiliation: a Department of Environmental Technology , Kaunas University of Technology , Kaunas , Lithuania.
authors.forename: Dainius
authors.initials: D
authors.lastname: Martuzevicius
mesh_terms: D000336:Aerosols / Q000737:chemistry / Q000302:isolation & purification*; D000393:Air Pollutants / Q000737:chemistry / Q000302:isolation & purification*; D005374:Filtration / Q000379:methods*; D019016:Mineral Fibers / Q000032:analysis*; D010316:Particle Size; D013696:Temperature; D017641:Zeolites / Q000737:chemistry*
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D019016:Mineral Fibers; D017641:Zeolites
keywords: Zeolite mineral; air filtration; mineral fibres; particulate matter; plasma spray