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dc.contributor.authorBoskovic, Lucijaen_US
dc.contributor.authorAltman, Igoren_US
dc.contributor.authorAgranovski, Igoren_US
dc.contributor.authorBraddock, Rogeren_US
dc.contributor.authorMyojo, Toshihikoen_US
dc.contributor.authorChoi, Mansooen_US
dc.description.abstractThe influence of particle shape on filtration processes was investigated. Two types of particles, including spherical polystyrene latex (PSL) and iron oxide, and perfect cubes of magnesium oxide, were examined. It was found that the removal efficiency of spherical particles on fibrous filters is very similar for corresponding sizes within the range of 50-300 nm, regardless of the fact that the densities of PSL and iron oxide differ by a factor of five. On the other hand, the removal efficiency of magnesium oxide cubic particles was measured, and found to be much lower than the removal efficiency for the aerodynamically similar spheres. Such disparity was ascribed to the different nature of the motion of the spherical and cubic particles along the fiber surface, following the initial collision. After touching the fiber surface and before coming to rest, the spherical particles could either slide or roll compared to the cubic ones, which could either slide or tumble. During tumbling, the area of contact between the particle and the fiber changes significantly, thus affecting the bounce probability, whilst for the spheres, the area of contact remains the same for any point of the particle trajectory. The extra probability of particle bounce by the cubes was derived from the experimental data. The particle kinetic energy was proposed to be responsible for the difference in removal efficiency of particles with alternative shapes, if all other process parameters remain the same. The increase in kinetic energy is shown to favor the increase of the bounce probability.en_US
dc.publisherTAYLOR & FRANCIS INCen_US
dc.publisher.placeUnited Statesen_US
dc.relation.ispartofjournalAEROSOL SCIENCE AND TECHNOLOGYen_US
dc.titleInfluence of Particle Shape on Filtration Processesen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith School of Engineeringen_US
gro.hasfulltextNo Full Text

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