Nanostructured Media to Improve the Performance of Fibrous Filters

Jackiewicz, A.; Podgórski, Albert; Gradoń, Leon; Michalski, J.

doi:10.14356/kona.2013023

Cited by 23 publications

(14 citation statements)

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“…Generally, nanofibers are produced by an electrospinning process, which is a remarkably simple method for generating highly functional nanofibers of polymers with the diameter of 50 nm to 5 mm, and introduce many prominent properties and potential applications in different fields, especially filtration . Electrospun nanofibrous filter media can be used in clean-air processes such as clean-room ventilation and respiratory air filters, since they have a high specific surface area, high porosity, interconnected pore structure with high permeability, potential to incorporate active chemistry, low basis weight, and small fiber diameter (Jackiewicz et al, 2013;Lackowski et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Optimization of electrospinning parameters for polyacrylonitrile-MgO nanofibers applied in air filtration

Dehghan

Golbabaei

Maddah

et al. 2016

Journal of the Air & Waste Management Association

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The present study aimed to optimize the electrospinning parameters for polyacrylonitrile (PAN) nanofibers containing MgO nanoparticle to obtain the appropriate fiber diameter and mat porosity to be applied in air filtration. Optimization of applied voltage, solution concentration, and spinning distance was performed using response surface methodology. In total, 15 trials were done according to the prepared study design. Fiber diameter and porosity were measured using scanning electron microscopic (SEM) image analysis. For air filtration testing, the nanofiber mat was produced based on the suggested optimum conditions for electrospinning. According to the results, the lower solution concentration favored the thinner fiber. The larger diameter gave a higher porosity. At a given spinning distance, there was a negative correlation between fiber diameter and applied voltage. Moreover, there were curvilinear relationships between porosity and both spinning distance and applied voltage at any concentration. It was also concluded that the developed filter medium could be comparable to the high-efficiency particulate air (HEPA) filter in terms of collection efficiency and pressure drop. The empirical models presented in this study can provide an orientation to the subsequent experiments to form uniform and continuous nanofibers for future application in air purification.Implications: High-efficiency filtration is becoming more important, due to decreasing trends air quality. Effective filter media are increasingly needed in industries applying clean-air technologies, and the necessity for developing the high-performance air filters has been more and more felt. Nanofibrous filter media that are mostly fabricated via electrospinning technique have attracted considerable attention in the last decade. The present study aimed to develop the electrospun PAN-containing MgO nanoparticle (using the special functionalities such as absorption and adsorption characteristics, antibacterial functionality, and as a pore-forming agent) filter medium through experimental investigations for application in high-performance air filters.PAPER HISTORY

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Section: Introductionmentioning

confidence: 99%

Optimization of electrospinning parameters for polyacrylonitrile-MgO nanofibers applied in air filtration

Dehghan

Golbabaei

Maddah

et al. 2016

Journal of the Air & Waste Management Association

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“…They were obtained by means of melt-blown technique, described in detail elsewhere [25,26]. This method of production allowed us to obtain filters with repeatable structure.…”

Section: Methodsmentioning

confidence: 99%

Consecutive filtration of solid particles and droplets in fibrous filters

Gac

Jackiewicz

Werner

et al. 2016

Separation and Purification Technology

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“…Six fibrous filters made of polypropylene using a modified melt-blown technology were investigated. This entirely controlled method described in detail in a work by Jackiewicz et al (2013) allows us to produce the desired material with the defined porosity and mean fiber diame-ter. Three pairs of two filter types were manufactured-a mechanical filter (i.e.…”

Section: The Fibrous Filter's Mediamentioning

confidence: 99%

Penetration of Diesel Exhaust Particles (DEPs) through Fibrous Filters Produced Using Melt-Blown Technology

Penconek

Jackiewicz

Moskal

2015

KONA

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It is well known that diesel fumes are carcinogenic to humans and may cause inflammation of the respiratory tract, cardiovascular problems, etc. Diesel exhaust particles (DEPs) occurring in diesel fumes are fractal-like aggregates with diameters ranging between 10 and 2000 nm, with various compounds adsorbed on their surface. The fractal-like structure of DEPs and their nanosize leads to the problem of theoretically predicting the DEPs' filtration efficiency. Thus, experimental studies on effective protection against DEPs as well as theoretical modeling are essential. This study analyzes both experimentally and theoretically the mechanical and electret filters and their potential effectiveness in the filtration of DEPs. The theoretical analysis of the filtration process on fibrous fabrics was performed using classic filtration theory, assuming that the filtration layer can be treated as a system of a single fiber located in the Kuwabara cell. The experimental results show that the fibrous filters, produced using melt-blown technology, provide a high level of protection against DEP aerosols (93 %-99 %). The obtained filtration efficiencies are (in some cases) even higher than requested for particulate respiratory half-mask type 2 (made from a fibrous filter). However, the theoretical results obtained using classic filtration theory indicate lower filtration efficiencies than the experimental ones.

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Nanostructured Media to Improve the Performance of Fibrous Filters

Cited by 23 publications

References 1 publication

Optimization of electrospinning parameters for polyacrylonitrile-MgO nanofibers applied in air filtration

Optimization of electrospinning parameters for polyacrylonitrile-MgO nanofibers applied in air filtration

Consecutive filtration of solid particles and droplets in fibrous filters

Penetration of Diesel Exhaust Particles (DEPs) through Fibrous Filters Produced Using Melt-Blown Technology

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