10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
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Filtration Performance and Particle Loading Characteristics of Various Beaded Nanofiber Filter Media
SEONG KIM, H. Young Chung, David Y. H. Pui, University of Minnesota
Abstract Number: 1672 Working Group: Control and Mitigation
Abstract Nanofiber filter media has been known as promising filtration technology with higher filtration efficiency and figure of merit than conventional filter media. However, relatively high pressure drop due to its high packing density is one of the main drawbacks of nanofiber filter media. In order to overcome this drawback, beaded nanofiber has been introduced to reduce filter pressure drop by providing fiber-to-fiber spaces, that is, intentionally fabricated polymer beads along nanofibers can play an important role to maintain air path through the filter media. Some previous investigations have compared filtration efficiencies and initial pressure drops between conventional nanofiber media and beaded nanofiber media and showed beaded nanofiber media has a higher figure of merit than conventional nanofiber media by reducing the pressure drop through the filters. However, there has not been a systematic study on bead effect on filtration performance and no particle loading study has been conducted yet. In this study, we fabricated various shapes of beads with a controlled concentration on nanofiber media and investigate its effect on filtration performance and particle loading characteristics.