Investigations into the penetration and pressure drop of hepa filter media during loading with submicron particle aerosols at high concentrations

Leibold, Hans; Wilhelm, J.G.

doi:10.1016/s0021-8502(05)80214-9

Cited by 11 publications

(7 citation statements)

References 3 publications

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“…This can be explained by the fact that higher material loading leads to a thicker filter cake and consequently reduces the volumetric air flow that passing through the filter cake [8]. This finding indicates the dependence of pressure drop on the permeability of the accumulated dust cake on the filter media [9,10]. As in Fig.…”

Section: Resultsmentioning

confidence: 76%

The Effects of Newly Formulated Filter Aids Material Loading on Pressure Drop and Particle Penetration

Hajar¹,

Andenan²,

Ammar³

2016

Proceedings of the 2016 International Conference on Mechanics, Materials and Structural Engineering

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Filter aids have been widely used in air filtration system in order to fulfill the needs to expand the lifespan of the fabric filter as well as to improve the collection efficiency of particles during filtration and separation operations. The efficiencies of PrekotAC that consists of a different combination of power activated carbon and pre-coating material, PreKot™ in terms of its pressure drop across a filter media and collection efficiency are highly influenced on the material loading of a material used during filtration process. PrekotAC was formulated into four different weight ratios and tested under a constant air flow rate of 4 L/min and three different material loadings of 0.2, 0.4 and 0.6 mg/mm 2 . It was found that the higher the material loading is the higher the pressure drop across a filter media becomes. The results also showed that the penetration of particles were reduced significantly as material loading increases where higher material loading leads to higher collection efficiencies of particles.

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Section: Resultsmentioning

confidence: 76%

The Effects of Newly Formulated Filter Aids Material Loading on Pressure Drop and Particle Penetration

Hajar¹,

Andenan²,

Ammar³

2016

Proceedings of the 2016 International Conference on Mechanics, Materials and Structural Engineering

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“…As a result, the studies of pressure drop characteristics have been primarily empirical. 22,23 Activated carbon powders have been effectively used for the capture of air toxics such as mercury in combustion and other exhausts. 24,25 Two methodologies have been proposed: injection into the flue gas followed by capture on a downstream bag filter, or the use of a packed bed geometry.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Activated Carbon Fiber Filters for Pressure Drop, Submicrometer Particulate Collection, and Mercury Capture

Hayashi

Lee

Hazelwood

et al. 2000

Journal of the Air & Waste Management Association

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The use of activated carbon fiber (ACF) filters for the capture of particulate matter and elemental Hg is demonstrated. The pressure drop and particle collection efficiency characteristics of the ACF filters were established at two different face velocities and for two different aerosols: spherical NaCl and combustion-generated silica particles. The clean ACF filter specific resistance was 153 kg m -2 sec -1

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“…This finding suggests that pressure drop across the filtration process depends on the characteristics of the filter media and filter aids [15].…”

Section: Fluidsche 2017mentioning

confidence: 92%

Performance of PrekotAC Filter Aids on Pressure Drop across Two Different Filter Media

Hajar¹,

Rashid²,

Andenan³

et al. 2017

MATEC Web Conf.

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Abstract.A study on the performance of formulated PrekotAC filter aids on pressure drop across two different types of filter media, i.e polytetrafluoroethylene (PTFE) and polyimide (P84) was carried out in a laboratory scale fabric filtration system. Filter aids is applied in order to prolong the lifespan of the fabric filter by reducing the pressure drop across a filter cake. PrekotAC which is a combination of 90%wt activated carbon and 10%wt PreKot™ was tested under various material loadings of 0.2, 0.4, and 0.6 mg/mm² at a constant filtration velocity of 5 m/min across its cake and filter media. The results showed that PrekotAC presents a lower pressure drop across the P84 compared to PTFE filter media under various material loadings. This is because of its different characteristics that effect the porosity of the filter media and allow a higher volumetric airflow passing through, resulting in lower pressure drop compared to PTFE filter media. In addition, the diversity in terms of particle size distribution of the formulated PrekotAC that increase its permeability property helps to reduce the pressure drop across the media and its filter cake. Thus, PrekotAC has a promising characteristic as a two in one filter aids, a pre-coating and adsorbent material for fabric filtration system.

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Investigations into the penetration and pressure drop of hepa filter media during loading with submicron particle aerosols at high concentrations

Cited by 11 publications

References 3 publications

The Effects of Newly Formulated Filter Aids Material Loading on Pressure Drop and Particle Penetration

The Effects of Newly Formulated Filter Aids Material Loading on Pressure Drop and Particle Penetration

Characterization of Activated Carbon Fiber Filters for Pressure Drop, Submicrometer Particulate Collection, and Mercury Capture

Performance of PrekotAC Filter Aids on Pressure Drop across Two Different Filter Media

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