Capacity of quartz fibers with high filtration efficiency for capturing soot aerosol particles

S. Akbarnezhad, A. Amini, A. Soltani Goharrizi, T. Rainey, L. Morawska

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Two proposed quartz fibrous filters with dissimilar solid volume fractions and thicknesses are investigated for their efficiency in removing soot aerosol particles from air. Soot particles are sourced from a candle burning in a chamber, and the tests involve 1.5 h of continuous loading of particles at three different flow rates: 4.5, 8.15 and 9.55 l/min. The fractional efficiency, morphology and pressure drop of both clean and loaded filters are studied using a scanning mobility particle sizer, scanning electron microscope and differential pressure gauge. Both filters have relatively similar levels of efficiency 93% for particle size (100–400 nm) at the lowest flow rate. At higher flow rates, the re-entrainment process effects the filtration efficiency of both filters. At the higher flow rate of 8.15 l/min, the filter with a higher solid volume fraction and thickness shows a higher pressure drop and an efficiency level of 95%. Increasing the flow rate to 9.55 l/min helps to pass the particles with diameters larger than 100 nm through two filters. This phenomenon decreases the fractional efficiency of both filters during the loading time.
Original languageEnglish
Pages (from-to)1039-1048
Number of pages10
JournalInternational Journal of Environmental Science and Technology
Volume15
Issue number5
DOIs
Publication statusPublished - 2018

Keywords

  • aerosols
  • filters and filtration
  • quartz fibers
  • soot

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