Loading of fibrous filter media and newly designed filter configurations by salt particles: An experimental study

Abstract

in Wiley Online Library (wileyonlinelibrary.com)Various fibrous filter media, including surface filter media, depth filter media, woven and nonwoven filter media, were tested and particle loading capacity was calculated using bench-scale setup via a new estimation approach which was proposed and experimentally verified with Novick-Kozeny model. Multi-element structured arrays (MESAs) developed by our research group were evaluated as well for particle loading capacity and filter lifetime on 24 00 3 24 00 full scale test rig (based on ASHRAE 52.2 Standard). Effects of varying filter media type, filter depth, pleat count and MESAs' element count on salt particle loading performance were experimentally investigated. The experimental studies showed that nonwoven activated carbon fiber filter media have allowed significantly higher salt particle loading capacity and longer useful lifetime compared to woven or nanofiber entrapped media. Furthermore, MESAs were able to significantly enhance loading capacity for salt particles and useful lifetime due to higher filtration area and lower filtration velocity.

Filtration performance of novel microfibrous media embedded with nanofiber flocs for aerosol particle removal

“…These could be referred to as 'Nano-fuzzy' and 'Nano-floc' fibers. Based on various filtration mechanisms [13,15], it is clear that using smaller diameter fibers with higher surface areas has significant enhancement on small particle filtration. In this work, novel porous nanofiber flocs embedded microfibrous filter is assessed via SEM images, and filtration parameters such as filtration efficiency, quality factors and mass loading capacities.…”

“…Anionic surfactant sodium dodecyl sulfate (SDS) and cationic surfactant cetrimonium bromide (CTAB) were acquired from Sigma Aldrich and used as received. ACFs with diameter of 9-10 μm, length of 3 mm, and surface area of 2500 m 2 g −1 were obtained from TOYOBO, Japan and used as received [15]. Bi-component polyester fibers with diameter of 13 μm and length of 3-6 mm from KOSA were utilized both as filtration microfibers and filtration medium binders.…”

“…Filtration media fabrication via a wet-lay method. The nanofiber floc included filtration media was fabricated via a wet-lay method [13,15] in this study. ACFs were first dispersed in water using a blender.…”

“…Besides the investigation on nanofiber-enhanced metal fibrous matrices, an experimental study was also conducted on salt particle loading on various newly designed nonmetallic fibrous media. The filtration tests revealed that non-woven activated carbon fiber (ACF) media provided a significantly higher salt particle loading capacity and a longer filter lifetime [14,15]. Using the nonwoven filter media in a full-scale test rig (based on ASHRAE 52.2 Standard), the fabricated multi-element structured arrays indicated significant enhancement on the dirt loading capacity and prolonged filter lifetime.…”

Characterization of Dirt Holding Capacity of Microfiber-Based Filter Media Using Thermal Impedance Spectroscopy

“…was in the center of the filtration media. A more detailed description of the filter media evaluation was included in the previous work. , A filter media was then assembled inside the sample holder for the salt-loading process. It can be easily taken out temporarily to measure the sample weight gains during the particle-loading process.…”