Capacity of quartz fibers with high filtration efficiency for capturing soot aerosol particles |
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| Authors: | S. Akbarnezhad A. Amini A. Soltani Goharrizi T. Rainey L. Morawska |
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| Affiliation: | 1.Department of Chemical Engineering, Faculty of Engineering,Shahid Bahonar University of Kerman,Kerman,Iran;2.Center for Infrastructure Engineering,Western Sydney University,Penrith,Australia;3.School of Engineering,Australian College of Kuwait,Kuwait City,Kuwait;4.Science and Engineering Faculty, Chemistry, Physics, Mechanical Engineering, Energy and Process Engineering,Queensland University of Technology,Brisbane,Australia;5.International Laboratory for Air Quality and Health,Queensland University of Technology,Brisbane,Australia |
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| 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. |
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