Consecutive filtration of solid particles and droplets in fibrous filters

Gac, Jakub M.; Jackiewicz, A.; Werner, Łukasz; Jakubiak, Szymon

doi:10.1016/j.seppur.2016.06.057

Cited by 33 publications

(13 citation statements)

References 35 publications

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“…The reason was that the oil coating minimizes the amount of particle motion along the fibre after the initial collision. Other studies investigated the consecutive filtration of solid and liquid aerosols (Gac et al, 2018(Gac et al, , 2016 to determine the influence of solid deposits on droplet filtration and the morphology reorganisation of these deposits during filtration. It has been proven that liquid aerosol addition results in lower efficiency in the consecutive filtration of solid and liquid particles because liquid droplets destroy the dendrite-like structures, and the liquid deposited on the fibres prevents their formation (Gac et al, 2016).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Other studies investigated the consecutive filtration of solid and liquid aerosols (Gac et al, 2018(Gac et al, , 2016 to determine the influence of solid deposits on droplet filtration and the morphology reorganisation of these deposits during filtration. It has been proven that liquid aerosol addition results in lower efficiency in the consecutive filtration of solid and liquid particles because liquid droplets destroy the dendrite-like structures, and the liquid deposited on the fibres prevents their formation (Gac et al, 2016). The origin of destruction (collapse) of dendritic structures by addition of liquids during or before deposition of solid particles has been…”

Section: Accepted Manuscriptmentioning

confidence: 99%

See 1 more Smart Citation

Filtration of Submicron Soot Particles, Oil Droplets, and their Mixtures on Single- and Multi-layer Fibrous Filters

Kamiński

Gac

Sobiech

et al. 2022

Aerosol Air Qual. Res.

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The dynamics of filtration efficiency and pressure drop during the simultaneous filtration of soot and oil aerosols on single-and multi-layer filters were investigated, and the determined filtration efficiency was compared with the theoretical efficiency obtained via the classical filtration theory. Additionally, the influence of liquid-phase aerosols on the morphology of the formed deposits was investigated. It was concluded that the addition of oil aerosols decreased the filtration efficiency and lowered the pressure drop increase rate for multi-layer filters.Additionally, for the filtration of aerosols containing soot and high oil concentrations, once maximum filtration efficiency was reached, an efficiency decrease occurred. The system imperfection factor was proposed as a mean to predict the efficiency of multi-layer filters. The modified version of the single fibre efficiency method was used to calculate filter mass change with reasonable accuracy.

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Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Filtration of Submicron Soot Particles, Oil Droplets, and their Mixtures on Single- and Multi-layer Fibrous Filters

Kamiński

Gac

Sobiech

et al. 2022

Aerosol Air Qual. Res.

Self Cite

View full text Add to dashboard Cite

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“…That leads to appearance of capillary [28] and liquid bridging forces [29] and thus to reorganization (collapse) of deposits and, finally, to change the efficiency of filters. Procedure and results of simulation has been presented in details in work by Gac et al [30].…”

Section: Fibrous Filters For the Removal Of Solid Particles And Droplmentioning

confidence: 99%

“…All the newly formed structures were tested using highly advanced test benches from PALAS GmbH company (described in details in works by Gac et al [30] and Jackiewicz et al [33]) to examine both the filtration of solid particles and droplets of different diameter from nano to micrometer. The main parameters of fibrous filters, such as pressure drop and separation efficiency while loading filters with solid and liquid particles, were examined.…”

Section: Fibrous Filters For the Removal Of Solid Particles And Droplmentioning

confidence: 99%

New Methods of Natural Gas Adjusting for Technological Purposes Based on Modern Filtration Materials

Jackiewicz

Szwast

Gac

et al. 2018

Ecological Chemistry and Engineering S

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Reservoir gas treatment technologies currently in use require significant investments in equipment and materials. Considering the foregoing, new technologies are sought for treatment and separation of components of extracted gas. They will guarantee compliance with gas quality requirements arising from applicable standards while at the same time lowering the costs of investment, service and environmental protection. Therefore, the purpose of this work was to develop an efficient mobile technology for natural gas treatment, on the basis of advanced filtering and coalescing materials and membranes, which eliminate the existing, economically non-viable processes and reduce the costs related to development of new reservoirs. The purpose of designed materials was removal of solid particles, water, higher hydrocarbons and nitrogen from natural gas. Presented integrated filtration and membrane system, characterized by a highly compact design enabling installation in container stations and transporting the system between specific points of production.

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“…The pressure drop and particle filtering efficiency of the proposed concept are measured through experiments and simulations and are compared with their commercial counterparts. It is also worth pointing out that fibre-based commercial filters may change filtration efficiency and pressure drop when exposed to solid-liquid and liquid-solid aerosols [19]; however, the performance of the proposed concept is agnostic to the constitution of particulates and droplets.…”

Section: Introductionmentioning

confidence: 99%

On the design of particle filters inspired by animal noses

Yuk

Chakraborty

Cheng

et al. 2022

J. R. Soc. Interface.

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Passive filtering is a common strategy to reduce airborne disease transmission and particulate contaminants across scales spanning orders of magnitude. The engineering of high-performance filters with relatively low flow resistance but high virus- or particle-blocking efficiency is a non-trivial problem of paramount relevance, as evidenced in the variety of industrial filtration systems and face masks. Next-generation industrial filters and masks should retain sufficiently small droplets and aerosols while having low resistance. We introduce a novel 3D-printable particle filter inspired by animals’ complex nasal anatomy. Unlike standard random-media-based filters, the proposed concept relies on equally spaced channels with tortuous airflow paths. These two strategies induce distinct effects: a reduced resistance and a high likelihood of particle trapping by altering their trajectories with tortuous paths and induced local flow instability. The structures are tested for pressure drop and particle filtering efficiency over different airflow rates. We have also cross-validated the observed efficiency through numerical simulations. We found that the designed filters exhibit a lower pressure drop, compared to commercial masks and filters, while capturing particles bigger than approximately 10 μm. Our findings could facilitate a novel and scalable filter concept inspired by animal noses.

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Consecutive filtration of solid particles and droplets in fibrous filters

Cited by 33 publications

References 35 publications

Filtration of Submicron Soot Particles, Oil Droplets, and their Mixtures on Single- and Multi-layer Fibrous Filters

Filtration of Submicron Soot Particles, Oil Droplets, and their Mixtures on Single- and Multi-layer Fibrous Filters

New Methods of Natural Gas Adjusting for Technological Purposes Based on Modern Filtration Materials

On the design of particle filters inspired by animal noses

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