Correlation between charge decay and solvent effect for melt-blown polypropylene electret filter fabrics

Xiao, Honggen; Song, Yeping; Chen, Gangjin

doi:10.1016/j.elstat.2014.05.006

Cited by 86 publications

(65 citation statements)

References 13 publications

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“…S4 and Table S4. After solvent immersion for charge removing, the filtration efficiency of PA-6/PAN/PA-6 composite membrane remained virtually unchanged, while H&V 13090NAH and 13070NAH media dropped sharply (from 99.9995% to 97.1638% for 13090NAH, and from 99.9987% to 95.9794% for 13070NAH), which could be attributed to the significant attenuation in surface potential of H&V electret media [47], as tabulated in Table S4.…”

Section: Filtration Performance Evaluationmentioning

confidence: 94%

Sandwich structured polyamide-6/polyacrylonitrile nanonets/bead-on-string composite membrane for effective air filtration

Yang

Zhang

Zhao

et al. 2015

Separation and Purification Technology

156

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Section: Filtration Performance Evaluationmentioning

confidence: 94%

Sandwich structured polyamide-6/polyacrylonitrile nanonets/bead-on-string composite membrane for effective air filtration

Yang

Zhang

Zhao

et al. 2015

Separation and Purification Technology

156

View full text Add to dashboard Cite

“…Thus, the existing state of organic species is a critical parameter in the degradation of the performance of electret filters. Many previous studies have reported on the effect of organic solvent exposure time (soaking time, treatment time) on the charge characteristics of an electret filter (Lee et al 2002;Jasper et al 2006;Xiao et al 2014). However, there have been no studies on charge characteristics with organic solvent retention time on the electret filter.…”

mentioning

confidence: 97%

“…However, its collection efficiency decreases over operation time due to decreased electrical attraction between charged fibers and particles (Brown et al 1988;Ji et al 2003;Sae-lim et al 2006). In particular, the exposure of electret filters to organic solvents leads to drastic reduction of their collection efficiency (Xiao et al 2014). Our previous study also reported that the particle penetration of ethanol-treated electrospun filter media drastically increased in comparison to that of untreated electrospun filter media, and the most penetrating particle size (MPPS) shifted from 80»100 nm to the 100»200 nm range, which demonstrated the neutralization of charged filter media (Choi et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Charge Decay of Electret Filter Due to Organic Solvent Exposure

Choi

Park

Kim

et al. 2015

Aerosol Science and Technology

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The electret filter is a potential component to remove airborne particles due to its high collection efficiency and low pressure drop. However, its filtration performance is gradually decreased by exposure to organic solvents, which limits the application of electret filters. The effect of ethanol exposure on the filtration performance of polypropylene electret filters was investigated experimentally to clarify the charge decay phenomenon in this study. Experimental results revealed that filter performance is strongly dependent upon the challenged mass and existing state of an ethanol solvent. The filter performance was drastically degraded by exposure to ethanol droplets generated from a solution with ethanol concentrations above 30%; however, it was maintained during exposure to ethanol vapors. This tendency was also seen in the surface potentials of the exposed filter media. In addition, we found that the critical challenging amount of ethanol droplets was in the vicinity of 0.045 g/cm 2 to neutralize a tested electret filter in this study.

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“…Measurements for the case of electret filter were carried out by Baumgartner H.-P. and Löffler F. (1986and Löffler F. ( , 1987 2014), Xiao H. et al (2014). They found a unique collection behavior relating to deterioration of electrostatic effect with dust load and recovery of collection efficiency afterwards, and discussed influences by various parameters.…”

Section: Particle Collection At Stagementioning

confidence: 99%

Fine Particle Filtration Technology Using Fiber as Dust Collection Medium

Kanaoka

2019

KONA

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Researches relating dust collector using fiber as particle collection body i.e., air filter, cartridge filter and nonwoven bag filter, were reviewed. Their filtration process was classified into 3 stages, i.e., Stage 1.inner filtration I, Stage 2.inner filtration II and Stage 3.surface filtration. Collection mechanisms of fresh circular fiber have been well understood and so-called classic filtration theory is applicable except single nano-particle, where discussion about the possibility of thermal rebound is necessary. In Stage 1, effects of shape of both fiber and particle, and filter structure, non-uniformity are the important issues. In Stages 2 and 3, filtration process becomes very complicated because of many affecting parameters. Main target in Stage 2 is to develop effective scheme to describe the phenomena and to find filter structure having a large holding capacity. Most important issue in Stage 3 is to develop the effective cleaning technique to minimize the dust emission based on rational but not empirical scheme.

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Correlation between charge decay and solvent effect for melt-blown polypropylene electret filter fabrics

Cited by 86 publications

References 13 publications

Sandwich structured polyamide-6/polyacrylonitrile nanonets/bead-on-string composite membrane for effective air filtration

Sandwich structured polyamide-6/polyacrylonitrile nanonets/bead-on-string composite membrane for effective air filtration

Experimental Study on Charge Decay of Electret Filter Due to Organic Solvent Exposure

Fine Particle Filtration Technology Using Fiber as Dust Collection Medium

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