Relevant bibliographies by topics / Filtration of liquid aerosols

Academic literature on the topic 'Filtration of liquid aerosols'

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Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Filtration of liquid aerosols"

1

Agranovski, Igor E., and Roger D. Braddock. "Filtration of liquid aerosols on wettable fibrous filters." AIChE Journal 44, no. 12 (December 1998): 2775–83. http://dx.doi.org/10.1002/aic.690441218.

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2

Agranovski, Igor E., and Roger D. Braddock. "Filtration of liquid aerosols on nonwettable fibrous filters." AIChE Journal 44, no. 12 (December 1998): 2784–90. http://dx.doi.org/10.1002/aic.690441219.

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3

Lecoq, Marie, Soleiman Bourrous, Dominique Thomas, Jean-Christophe Appert-Collin, Fabien Floc’Hlay, and Mathieu Barrault. "Investigation of the Possibility of Application of Metal Fibrous Media in the Process of Filtration of Liquid Aerosols." Atmosphere 13, no. 10 (October 7, 2022): 1633. http://dx.doi.org/10.3390/atmos13101633.

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This manuscript presents a study of the possibility of applying metallic fibre filter media made of stainless steel for the filtration process of liquid aerosols. To perform the experiment, three types of filters were used: single layer and symmetric or non-symmetric multi-layered filters. Filters have been loaded with DEHS (Di-Ethyl-Hexyl-Sebacate) aerosol while the pressure drop and the collection efficiency were monitored. The impact of the filtration velocity on the saturation pressure drop has been quantified for monolayer filters. The building of a draining film on the free surface of the multi-layered filters has been studied and the impact of this phenomenon on the filtration performances and saturation ratio of the medium are discussed. For multilayer filters, the clogging dynamic, occurring by a successive loading of the draining layers, is highlighted in this work. Finally, propositions are made to evaluate the behaviour of metallic multi-layered filters for liquid aerosol filtration applications.
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4

Crosswhite, Mark R., Lena N. Jeong, Patrick C. Bailey, J. Brian Jameson, Anastasia Lioubomirov, David Cook, Clarissa Yang, Adam Ozvald, Matthew Lyndon, and I. Gene Gillman. "Non-Targeted Chemical Characterization of JUUL-Menthol-Flavored Aerosols Using Liquid and Gas Chromatography." Separations 9, no. 11 (November 11, 2022): 367. http://dx.doi.org/10.3390/separations9110367.

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The aerosol constituents generated from JUUL Menthol pods with 3.0% and 5.0% nicotine by weight (Me3 and Me5) are characterized by a non-targeted approach, which was developed to detect aerosol constituents that are not known to be present beforehand or that may be measured with targeted methods. Three replicates from three production batches (n = 9) were aerosolized using two puffing regimens (intense and non-intense). Each of the 18 samples were analyzed by gas chromatography electron ionization mass spectrometry and by liquid chromatography electrospray ionization high-resolving power mass spectrometry. All chemical constituents determined to differ from control were identified and semi-quantified. To have a complete understanding of the aerosol constituents and chemistry, each chemical constituent was categorized into one of five groups: (1) flavorants, (2) harmful and potentially harmful constituents, (3) leachables, (4) reaction products, and (5) chemical constituents that were unable to be identified or rationalized (e.g., chemical constituents that could not be categorized in groups (1–4). Under intense puffing, 74 chemical constituents were identified in Me3 aerosols and 68 under non-intense puffing, with 53 chemical constituents common between both regimens. Eighty-three chemical constituents were identified in Me5 aerosol using an intense puffing regimen and seventy-five with a non-intense puffing regimen, with sixty-two chemical constituents in common. Excluding primary constituents, reaction products accounted for the greatest number of chemical constituents (approximately 60% in all cases, ranging from about 0.05% to 0.1% by mass), and flavorants—excluding menthol—comprised the second largest number of chemical constituents (approximately 25%, ranging consistently around 0.01% by mass). The chemical constituents detected in JUUL aerosols were then compared to known constituents from cigarette smoke to determine the relative chemical complexities and commonalities/differences between the two. This revealed (1) a substantial decrease in the chemical complexity of JUUL aerosols vs. cigarette smoke and (2) that there are between 55 (Me3) and 61 (Me5) unique chemical constituents in JUUL aerosols not reported in cigarette smoke. Understanding the chemical complexity of JUUL aerosols is important because the health effects of combustible cigarette smoke are related to the combined effect of these chemical constituents through multiple mechanisms, not just the effects of any single smoke constituent.
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Charvet, A., Y. Gonthier, A. Bernis, and E. Gonze. "Filtration of liquid aerosols with a horizontal fibrous filter." Chemical Engineering Research and Design 86, no. 6 (June 2008): 569–76. http://dx.doi.org/10.1016/j.cherd.2007.11.008.

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Chen, Xin, Patrick C. Bailey, Clarissa Yang, Bryant Hiraki, Michael J. Oldham, and I. Gene Gillman. "Targeted Characterization of the Chemical Composition of JUUL Systems Aerosol and Comparison with 3R4F Reference Cigarettes and IQOS Heat Sticks." Separations 8, no. 10 (October 3, 2021): 168. http://dx.doi.org/10.3390/separations8100168.

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Aerosol constituent yields have been reported from a wide range of electronic nicotine delivery systems. No comprehensive study has been published on the aerosol constituents generated from the JUUL system. Targeted analyses of 53 aerosol constituents from the four JUUL products currently on the US market (Virginia Tobacco and Menthol flavored e-liquids in both 5.0% and 3.0% nicotine concentration by weight) was performed using non-intense and intense puffing regimens. All measurements were conducted by an ISO 17025 accredited contract research organization. JUUL product aerosol constituents were compared to published values for the 3R4F research cigarette and IQOS Regular and Menthol heated tobacco products. Across the four JUUL products and two puffing regimes, only 10/53 analytes were quantifiable, including only two carbonyls (known propylene glycol or glycerol degradants). The remaining analytes were primary ingredients, nicotine degradants and water. Average analyte reductions (excluding primary ingredients and water) for all four JUUL system aerosols tested were greater than 98% lower than 3R4F mainstream smoke, and greater than 88% lower than IQOS aerosol. In summary, chemical characterization and evaluation of JUUL product aerosols demonstrates a significant reduction in toxicants when compared to mainstream cigarette smoke from 3R4F reference cigarettes or aerosols from IQOS-heated tobacco products.
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Allison, J. R., C. Dowson, K. Pickering, G. Červinskytė, J. Durham, N. S. Jakubovics, and R. Holliday. "Local Exhaust Ventilation to Control Dental Aerosols and Droplets." Journal of Dental Research 101, no. 4 (November 10, 2021): 384–91. http://dx.doi.org/10.1177/00220345211056287.

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Dental procedures produce aerosols that may remain suspended and travel significant distances from the source. Dental aerosols and droplets contain oral microbes, and there is potential for infectious disease transmission and major disruption to dental services during infectious disease outbreaks. One method to control hazardous aerosols often used in industry is local exhaust ventilation (LEV). The aim of this study was to investigate the effect of LEV on aerosols and droplets produced during dental procedures. Experiments were conducted on dental mannequins in an 825.4-m3 open-plan clinic and a 49.3-m3 single surgery. Ten-minute crown preparations were performed with an air-turbine handpiece in the open-plan clinic and 10-min full-mouth ultrasonic scaling in the single surgery. Fluorescein was added to instrument irrigation reservoirs as a tracer. In both settings, optical particle counters (OPCs) were used to measure aerosol particles between 0.3 and 10.0 µm, and liquid cyclone air samplers were used to capture aerosolized fluorescein tracer. In addition, in the open-plan setting, fluorescein tracer was captured by passive settling onto filter papers in the environment. Tracer was quantified fluorometrically. An LEV device with high-efficiency particulate air filtration and a flow rate of 5,000 L/min was used. LEV reduced aerosol production from the air-turbine handpiece by 90% within 0.5 m, and this was 99% for the ultrasonic scaler. OPC particle counts were substantially reduced for both procedures and air-turbine settled droplet detection reduced by 95% within 0.5 m. The effect of LEV was substantially greater than suction alone for the air-turbine and was similar to the effect of suction for the ultrasonic scaler. LEV reduces aerosol and droplet contamination from dental procedures by at least 90% in the breathing zone of the operator, and it is therefore a valuable tool to reduce the dispersion of dental aerosols.
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Crosswhite, Mark R., Patrick C. Bailey, Lena N. Jeong, Anastasia Lioubomirov, Clarissa Yang, Adam Ozvald, J. Brian Jameson, and I. Gene Gillman. "Non-Targeted Chemical Characterization of JUUL Virginia Tobacco Flavored Aerosols Using Liquid and Gas Chromatography." Separations 8, no. 9 (August 24, 2021): 130. http://dx.doi.org/10.3390/separations8090130.

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The chemical constituents of JUUL Virginia Tobacco pods with 3.0% and 5.0% nicotine by weight (VT3 and VT5) were characterized by non-targeted analyses, an approach to detect chemicals that are not otherwise measured with dedicated methods or that are not known beforehand. Aerosols were generated using intense and non-intense puffing regimens and analyzed by gas chromatography electron ionization mass spectrometry and liquid chromatography electrospray ionization high resolving power mass spectrometry. All compounds above 0.7 µg/g for GC–MS analysis or above 0.5 µg/g for LC–HRMS analysis and differing from blank measurements were identified and semi-quantified. All identifications were evaluated and categorized into five groups: flavorants, harmful and potentially harmful constituents, extractables and/or leachables, reaction products, and compounds that could not be identified/rationalized. For VT3, 79 compounds were identified using an intense puffing regimen and 69 using a non-intense puffing regimen. There were 60 compounds common between both regimens. For VT5, 85 compounds were identified with an intense puffing regimen and 73 with a non-intense puffing regimen; 67 compounds were in common. For all nicotine concentrations, formulations and puffing regimens, reaction products accounted for the greatest number of compounds (ranging from 70% to 75%; 0.08% to 0.1% by mass), and flavorants comprised the second largest number of compounds (ranging from for 15% to 16%; 0.1 to 0.2% by mass). A global comparison of the compounds detected in JUUL aerosol to those catalogued in cigarette smoke indicated an approximate 50-fold decrease in chemical complexity. Both VT3 and VT5 aerosols contained 59 unique compounds not identified in cigarette smoke.
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Huang, Hsiao-Lin, Da-Ming Wang, Se-Tsung Kao, Shinhao Yang, and Yi-Chin Huang. "Removal of monodisperse liquid aerosols by using the polysulfone membrane filters." Separation and Purification Technology 54, no. 1 (March 2007): 96–103. http://dx.doi.org/10.1016/j.seppur.2006.08.012.

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Frising, T., V. Gujisait, D. Thomas, S. Callé, D. Bémer, P. Contal, and D. Leclerc. "Filtration of solid and liquid aerosol mixtures." Filtration & Separation 41, no. 2 (March 2004): 36. http://dx.doi.org/10.1016/s0015-1882(04)00075-8.

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Dissertations / Theses on the topic "Filtration of liquid aerosols"

1

Mullins, Benjamin James, and n/a. "Study of Capture, Fibre Wetting and Flow Processes in Wet Filtration and Liquid Aerosol Filtration." Griffith University. School of Environmental Engineering, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040919.124658.

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This thesis examines the particle capture, fibre wetting and droplet flow processes within wet filters collecting solid and liquid aerosols and within filters collecting only liquid aerosols. The processes involved in this type of filtration were examined through a series of experiments and models developed to describe the behaviour of fibre/liquid systems. This work can be summarized in 4 categories: (1) The bounce and immediate re-entrainment of liquid and solid monodisperse aerosols under a stable filtration regime (pre cake formation) by wet and dry fibrous filters. In this work it was found that the solid particles generally exhibited a lower fractional filtration efficiency than liquid particles (of the same size), although this difference decreased in the smaller size fractions. However, for the wet filtration regime (each fibre of the filter was coated by a film of water), no significant difference in filtration efficiency was detectable between solid and liquid aerosols. Either the bounce effect of the particles is inhibited by the liquid film, or the filtration conditions in the wet filter are so different that the aerosol properties are less significant with respect to capture. (2) A microscopic study of the effect of fibre orientation on the fibre wetting process and flow of liquid droplets along filter fibres when subjected to airflow and gravity forces was conducted. The flow of the liquid collected by the fibres was observed and measured using a specially developed micro-cell, detailed in the thesis. The experimental results were compared to a theoretical model developed to describe the flow of droplets on fibres. The theory and experimental results showed a good agreement. A sensitivity analysis of the model was performed which showed the droplet radius to be the most significant parameter. The model has the potential to improve filter self-cleaning and minimise water use. (3) An experimental study of the capture of solid and liquid (oil) aerosols on fibrous filters wetted with water. Variable quantities of liquid irrigation were used, and the possibility for subsequent fibre regeneration after clogging or drying was also studied. It was found that self-cleaning (removal of solid aerosols by water) occurred even under heavily dust-laden conditions, and post evaporation of water. With the collection of oil aerosols on fibres wetted with water, a predominance of the barrel shaped droplet on the fibre was observed, with oil droplets displacing water droplets (if the oil and fibre combination created a barrel shaped droplet), creating various compound droplets of oil and water not previously reported in literature. (4) An extensive experimental investigation of the wetting processes of fibre/liquid systems during air filtration (when drag and gravitational forces are acting) has shown many important features, including droplet extension, oscillatory motion, and detachment from fibres as airflow velocity increases. The droplet oscillation is believed to be induced by the onset of the transition from laminar to turbulent flow as droplet size increases. To model such oscillation it was necessary to create a new conceptual model to account for the forces both inducing and preventing such oscillation. The agreement between the model and experimental results is satisfactory for both the radial and transverse oscillations.
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2

Mullins, Benjamin James. "Study of Capture, Fibre Wetting and Flow Processes in Wet Filtration and Liquid Aerosol Filtration." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/365591.

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This thesis examines the particle capture, fibre wetting and droplet flow processes within wet filters collecting solid and liquid aerosols and within filters collecting only liquid aerosols. The processes involved in this type of filtration were examined through a series of experiments and models developed to describe the behaviour of fibre/liquid systems. This work can be summarized in 4 categories: (1) The bounce and immediate re-entrainment of liquid and solid monodisperse aerosols under a stable filtration regime (pre cake formation) by wet and dry fibrous filters. In this work it was found that the solid particles generally exhibited a lower fractional filtration efficiency than liquid particles (of the same size), although this difference decreased in the smaller size fractions. However, for the wet filtration regime (each fibre of the filter was coated by a film of water), no significant difference in filtration efficiency was detectable between solid and liquid aerosols. Either the bounce effect of the particles is inhibited by the liquid film, or the filtration conditions in the wet filter are so different that the aerosol properties are less significant with respect to capture. (2) A microscopic study of the effect of fibre orientation on the fibre wetting process and flow of liquid droplets along filter fibres when subjected to airflow and gravity forces was conducted. The flow of the liquid collected by the fibres was observed and measured using a specially developed micro-cell, detailed in the thesis. The experimental results were compared to a theoretical model developed to describe the flow of droplets on fibres. The theory and experimental results showed a good agreement. A sensitivity analysis of the model was performed which showed the droplet radius to be the most significant parameter. The model has the potential to improve filter self-cleaning and minimise water use. (3) An experimental study of the capture of solid and liquid (oil) aerosols on fibrous filters wetted with water. Variable quantities of liquid irrigation were used, and the possibility for subsequent fibre regeneration after clogging or drying was also studied. It was found that self-cleaning (removal of solid aerosols by water) occurred even under heavily dust-laden conditions, and post evaporation of water. With the collection of oil aerosols on fibres wetted with water, a predominance of the barrel shaped droplet on the fibre was observed, with oil droplets displacing water droplets (if the oil and fibre combination created a barrel shaped droplet), creating various compound droplets of oil and water not previously reported in literature. (4) An extensive experimental investigation of the wetting processes of fibre/liquid systems during air filtration (when drag and gravitational forces are acting) has shown many important features, including droplet extension, oscillatory motion, and detachment from fibres as airflow velocity increases. The droplet oscillation is believed to be induced by the onset of the transition from laminar to turbulent flow as droplet size increases. To model such oscillation it was necessary to create a new conceptual model to account for the forces both inducing and preventing such oscillation. The agreement between the model and experimental results is satisfactory for both the radial and transverse oscillations.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environmental Engineering
Faculty of Environmental Sciences
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3

Agranovski, Igor Evgenevich, and n/a. "Filtration of Ultra-Small Particles on Fibrous Filters." Griffith University. School of Environmental Engineering, 1995. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050913.164528.

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The problem of filtration of liquid aerosols by both wettable and nonwettable filters has been extensively studied and the results of the theoretical calculations together with the experimental results are presented. More realistic models of filtration by both wettable and nonwettable filters have been developed and verified experimentally. A new instrument has been developed, and used in the experiments, for the measurement of the absolute concentration of aerosols in the gas stream. This instrument is based on the measurement of the initial vapour content of the gas stream simultaneously with the measurement of the vapour content after the total evaporation of aerosol. The concentration of the aerosol is calculated as the difference between these two values. The instrument was developed to provide fast and accurate measurements of aerosol concentration. The main advantages of the instrument are: high accuracy, simplicity of measurement, possibility of use for a wide range of substances, perfect suitability of operation for automatic monitoring technologies, etc. All rights for this instrument have been reserved and the fully automatic version will be available in the near future. It was found that the efficiency of filtration of aerosol on the wettable filter depends on the thickness of the liquid film on the fibre. This parameter was taken into account in the development of a theoretical model of filtration on wettable fibrous filters. The particle breakthrough problem has been solved by the optimisation of the aspect ratio (the ratio of the height by width) of the wettable filter. On this basis, industrial devices have been developed, patented, and implemented in industry. These devices provide a stable operating efficiency of higher than 99%. It was found experimentally that the efficiency of filtration of aerosol on the nonwettable filter depends on the diameter of the drop suspended on the filter, and on the area of the filter blocked by drops: this influences the velocity of filtration. All these parameters were taken into account in the development of a theoretical model of filtration on nonwettable fibrous filters. On the basis of this model, satisfactorily verified by the experiments, an industrial device has been developed. The harnessing of atomisers makes it possible to maintain the efficiency of filtration higher than 99%, even with a relatively high velocity of filtration of 2.7m/s. The new technology is tackling the problem of handling huge amounts of exhaust gases and this is particularly important for cramped installations when the space available for the air pollution control technology is quite limited. A highly efficient gas cleaning technology has been developed. This technology is based on combining two stages (wet scrubber and filter) of currently utilised air pollution control devices by submerging the fibrous filter into the liquid on the plate. The new device provides an effective division of the main gas stream into ultra-small bubbles which increase the contact area between the gas and liquid phases. It was estimated theoretically and verified experimentally that the efficiency of the proposed 'combined' technology, is 45% higher than the efficiency of the two stages technology. The technology has been patented and will be offered for industrial implementation in the near future.
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4

Agranovski, Igor Evgenevich. "Filtration of Ultra-Small Particles on Fibrous Filters." Thesis, Griffith University, 1995. http://hdl.handle.net/10072/367392.

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The problem of filtration of liquid aerosols by both wettable and nonwettable filters has been extensively studied and the results of the theoretical calculations together with the experimental results are presented. More realistic models of filtration by both wettable and nonwettable filters have been developed and verified experimentally. A new instrument has been developed, and used in the experiments, for the measurement of the absolute concentration of aerosols in the gas stream. This instrument is based on the measurement of the initial vapour content of the gas stream simultaneously with the measurement of the vapour content after the total evaporation of aerosol. The concentration of the aerosol is calculated as the difference between these two values. The instrument was developed to provide fast and accurate measurements of aerosol concentration. The main advantages of the instrument are: high accuracy, simplicity of measurement, possibility of use for a wide range of substances, perfect suitability of operation for automatic monitoring technologies, etc. All rights for this instrument have been reserved and the fully automatic version will be available in the near future. It was found that the efficiency of filtration of aerosol on the wettable filter depends on the thickness of the liquid film on the fibre. This parameter was taken into account in the development of a theoretical model of filtration on wettable fibrous filters. The particle breakthrough problem has been solved by the optimisation of the aspect ratio (the ratio of the height by width) of the wettable filter. On this basis, industrial devices have been developed, patented, and implemented in industry. These devices provide a stable operating efficiency of higher than 99%. It was found experimentally that the efficiency of filtration of aerosol on the nonwettable filter depends on the diameter of the drop suspended on the filter, and on the area of the filter blocked by drops: this influences the velocity of filtration. All these parameters were taken into account in the development of a theoretical model of filtration on nonwettable fibrous filters. On the basis of this model, satisfactorily verified by the experiments, an industrial device has been developed. The harnessing of atomisers makes it possible to maintain the efficiency of filtration higher than 99%, even with a relatively high velocity of filtration of 2.7m/s. The new technology is tackling the problem of handling huge amounts of exhaust gases and this is particularly important for cramped installations when the space available for the air pollution control technology is quite limited. A highly efficient gas cleaning technology has been developed. This technology is based on combining two stages (wet scrubber and filter) of currently utilised air pollution control devices by submerging the fibrous filter into the liquid on the plate. The new device provides an effective division of the main gas stream into ultra-small bubbles which increase the contact area between the gas and liquid phases. It was estimated theoretically and verified experimentally that the efficiency of the proposed 'combined' technology, is 45% higher than the efficiency of the two stages technology. The technology has been patented and will be offered for industrial implementation in the near future.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environmental Engineering
Faculty of Environmental Sciences
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5

Martin, Graham S. "Theoretical and experimental studies of an aerosol coalescing fibrous filter." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265545.

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Scurrah, Katherine Lesley. "Filtration of solid and liquid aerosol particles." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/32098.

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Fibrous filter materials are commonly adopted in a variety of industrial and domestic processes to remove fine particles. Filter performance may be assessed by two parameters: the proportion of particles passing through the media (penetration), and the resistance to gas flow through the filter (pressure drop). Another parameter, the filter lifetime, may be important where economical factors are key.
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Mead-Hunter, Ryan. "Modelling micro-scale coalescence and transportprocesses in liquid aerosol filtration." Thesis, Curtin University, 2012. http://hdl.handle.net/20.500.11937/1063.

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This work has examined the physico-chemical properties of coalescing filters on a micro-scale, considering them as either a capillary system or a fibre-droplet system. This work has developed a validated theoretical model for droplet-fibe forces in both phillic and phobic systems and a computational fluid dynamics solver for droplet-fibre systems. This work will significantly improve the design and optimisation of coalescing filter systems.
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Sutter, Benjamin. "Étude de l'évaporation d'aérosols liquides semi-volatils collectés sur médias fibreux." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL067N/document.

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Cette étude s’inscrit dans le cadre de l’amélioration des connaissances liées à l’évaporation d’aérosols liquides semi-volatils collectés sur des filtres à fibres. Le phénomène d’évaporation d’aérosols collectés sur médias fibreux induit des problèmes de sécurité avec notamment une surexposition des salariés aux vapeurs, à l’aval des systèmes généraux de filtration de l’air. De plus, lors des contrôles des concentrations atmosphériques des aérosols, l’évaporation induit une sous-estimation de la phase particulaire de l’aérosol prélevé qui est problématique en termes de prévention de l’exposition. L’objectif de ces travaux a donc été de produire de nombreux résultats expérimentaux afin, d’une part, de compléter les rares présents dans la littérature et, d’autre part, d’améliorer les modèles théoriques développés précédemment. Deux approches expérimentales ont été menées afin d’identifier le processus d’évaporation d’un aérosol collecté. La première, nommée approche globale, permet de suivre l’évaporation de l’aérosol par la quantification des vapeurs à l’aval du filtre, au cours du temps. La seconde, nommée approche microscopique, étudie l’évaporation de gouttes collectées sur les fibres d’une fibre à l’échelle microscopique. Les deux approches réalisées lors de ces travaux s’accordent sur le fait que l’évaporation d’un aérosol liquide semi-volatil ne peut être modélisée par les modèles proposés par la littérature. Des hypothèses ont été avancées afin d’expliquer la divergence de cinétique d’évaporation entre la théorie et les expérimentations
This study falls within the scope of improving knowledge concerning evaporation of semi-volatile liquid aerosols collected on fibrous filters. Under these conditions, the aerosol evaporation phenomenon causes problems of safety, in particular over-exposure of employees to vapours downstream of general air filtering systems. Furthermore, when controlling aerosol atmospheric concentrations, evaporation results in under-estimation of the sampled aerosol particle phase and this is clearly problematic in exposure prevention terms. The aim of this work was therefore to record a large number of experimental data, both to make up for their scarcity in the literature and to improve previously developed theoretical models. Two experimental approaches were implemented to identify the evaporation process for a collected aerosol. The first, termed the global approach, allowed us to monitor aerosol evaporation by measuring vapour quantity downstream of the filter with respect to time. The second, microscopic, approach considers evaporation of droplets collected on the filter fibres on a microscopic scale. The two approaches implemented during this research lead to agreement on the fact that evaporation of a liquid semi-volatile aerosol cannot be satisfactorily represented by the theoretical models proposed in the literature. Hypotheses are advanced to explain the divergence in evaporation kinetics between theoretical and experimental work
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Penicot-Bauge, Pascale. "Étude de la performance de filtres à fibres lors de la filtration d'aérosols liquides ou solides submicroniques." Vandoeuvre-les-Nancy, INPL, 1998. http://docnum.univ-lorraine.fr/public/INPL_T_1998_PENICOT_BAUGE_P.pdf.

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Cette étude concerne la filtration par un filtre à fibres d'un gaz contaminé soit par des particules solides submicroniques soit par un aérosol liquide submicronique. Après une synthèse de l'ensemble des travaux réalisés antérieurement, nous nous intéressons dans un premier temps à caractériser les différents filtres (très haute efficacité et moyenne efficacité) mis à notre disposition. Les résultats expérimentaux relatifs à la filtration de particules solides nous ont permis de détailler le processus de colmatage et de décrire en particulier l'évolution de la perte de charge, de l'efficacité, du profil de pénétration de l'aérosol au sein du medium. Des observations au microscope montrent que dans une première étape du colmatage, des dendrites sont formées sur les fibres dans la profondeur du filtre et que dans une seconde étape un gâteau se construit sur la surface du filtre. L’originalité de la partie expérimentale réside dans la caractérisation du gâteau et la détermination du point de transition entre les deux phases de la filtration. Un nouveau modèle théorique a été développé et permet de rendre compte de l'ensemble des résultats expérimentaux. La filtration d'un aérosol liquide a été décrite et a mis en évidence l'existence d'une masse seuil pour laquelle on observe une brutale augmentation de la perte de charge du filtre, correspondant à la présence d'un film liquide forme sur la surface du filtre. L’influence de certains paramètres opératoires a été étudiée ainsi que la nature de l'aérosol, en particulier la tension superficielle du liquide. Enfin, diverses approches ont permis de décrire théoriquement les phénomènes observés et d'ouvrir différentes perspectives de modélisation plus fines.
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Knox, Christopher James Henry. "The photochemistry of liquid aerosols." Thesis, University of Canterbury. Chemistry, 2002. http://hdl.handle.net/10092/6076.

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The photochemistry of liquid aerosols has been investigated with the aim of using the physical properties of liquid aerosols to enhance the reactivity of photochemical and photocatalytic systems. The properties of aerosols that enhance reactivity are summarised under four headings: the optics of micro droplets, diffusion into small particles, surface and interfacial reactivity, and capillarity effects. A range of systems have been developed for the photochemistry of liquid aerosols. A number of photocatalytic systems have been studied and a significant enhancement in the photolysis of molybdenum hexacarbonyl has been observed, relative to the liquid phase. A computational study of the light intensity distribution inside liquid aerosols droplets in photochemical and photocatalytic systems has been carried out. Large enhancements of the internal field intensity relative to the incident field have been observed. It is proposed that the internal intensity distributions are the source of the increased rate of molybdenum hexacarbonyl photolysis. A model has been proposed for gas-liquid transfer, based on the capillary wave motion of the liquid surface.
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Books on the topic "Filtration of liquid aerosols"

1

Tien, Chi. Granular filtration of aerosols and hydrosols. 2nd ed. Amsterdam: Elsevier, 2007.

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Tien, Chi. Granular filtration of aerosols and hydrosols. Boston: Butterworths, 1989.

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Liquid filtration. 2nd ed. Boston: Butterworth-Heinemann, 1998.

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Bird, Andrew John. The filtration of liquid alloys. Birmingham: University of Birmingham, 1990.

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Květoslav, Spurný, ed. Advances in aerosol filtration. Boca Raton, FL: Lewis Publishers, 1998.

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Cheremisinoff, Nicholas P. Liquid filtration for process & pollution control. Matawan, N.J: SciTech, 1989.

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S, Ward A., and Holdich R. G, eds. Solid-liquid filtration and separation technology. 2nd ed. Weinheim: Wiley-VCH, 2000.

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S, Ward A., and Holdich R. G, eds. Introduction to solid-liquid filtration and separation technology. Weinheim: VCH, 1994.

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Järvinen, Kimmo. Development of filter media treatments for liquid filtration. Lappeenranta: Lappeenranta University of Technology, 2005.

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A, Bott Reinhard, Langeloh Thomas, and Anlauf Harald, eds. Solid/liquid separation lexicon. Weinheim: Wiley-VCH, 2001.

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Book chapters on the topic "Filtration of liquid aerosols"

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Agranovski, Igor E. "Filtration of Liquid and Solid Aerosols on Liquid-Coated Filters." In Aerosols - Science and Technology, 315–42. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527630134.ch11.

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Olson, Rudolph A., and Luiz C. B. Martins. "Liquid Metal Filtration." In Cellular Ceramics, 401–15. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527606696.ch5a.

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Meirmanov, Anvarbek. "Isothermal Liquid Filtration." In Atlantis Studies in Differential Equations, 1–65. Paris: Atlantis Press, 2013. http://dx.doi.org/10.2991/978-94-6239-015-7_1.

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Meirmanov, Anvarbek. "Isothermal Liquid Filtration." In Atlantis Studies in Differential Equations, 241–63. Paris: Atlantis Press, 2013. http://dx.doi.org/10.2991/978-94-6239-015-7_6.

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Böddeker, Karl W. "Membrane Filtration." In Liquid Separations with Membranes, 57–71. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97451-4_5.

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Concha A., Fernando. "Filtration." In Solid-Liquid Separation in the Mining Industry, 281–340. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-02484-4_9.

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Charvet, Augustin, and Dominique Thomas. "Filtration of Liquid Aerosols." In Aerosol Filtration, 161–88. Elsevier, 2017. http://dx.doi.org/10.1016/b978-1-78548-215-1.50006-8.

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Mead-Hunter, Ryan, Andrew J. C. King, and Benjamin J. Mullins. "Fibrous filtration of liquid aerosols." In Fibrous Filter Media, 51–93. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-08-100573-6.00010-1.

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Thomas, Dominique, and Augustin Charvet. "An Introduction to Aerosols." In Aerosol Filtration, 1–30. Elsevier, 2017. http://dx.doi.org/10.1016/b978-1-78548-215-1.50001-9.

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Thomas, Dominique. "Filtration of Solid Aerosols." In Aerosol Filtration, 123–59. Elsevier, 2017. http://dx.doi.org/10.1016/b978-1-78548-215-1.50005-6.

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Conference papers on the topic "Filtration of liquid aerosols"

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Zhou, Yanmin, Haifeng Gu, Qiunan Sun, Zhongning Sun, Jiqiang Su, Li Gao, Qianchao Ma, Gan Zhu, and Li Yingzhi. "Research on Deposition of Micro-Nano Aerosols in Rising Bubble Under Pool Scrubbing Condition." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81160.

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Aerosols as the main component of radioactive products in migration performance, which is an important factor that a unclear reactor accident present strong diffusion and affects the distributions of source and dose level in reactor containment, and they are therefore expected to be deposited in liquid phase such as in suspension pool and filtered containment venting device. In this paper, the deposition characteristics of micro-nano aerosols in rising bubble under pool scrubbing condition is studied with experiment, the aerosols size in the research range from 20 nm to 600 nm, and the bubble morphology mainly concern homogeneous bubbly flow. The results show that the deposition efficiency and mechanism of aerosol closely relate to gas flow rate, liquid level, particle size and bubbles size and so on. The aerosol deposition near 85nm is proved most difficult because of the convert of deposition mechanisms. In a high liquid level condition, micro-nano aerosol filtration efficiency is enhanced but gradually gradual. Under different gas flow rate, air bubble residence time and the bubble size distributions affect the filtration efficiency of aerosols.
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Rabenstein, Klaus. "Filtration of aerosols at laser cutting process." In ILSC® 2003: Proceedings of the International Laser Safety Conference. Laser Institute of America, 2003. http://dx.doi.org/10.2351/1.5056534.

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Shimada, Taro, Soichiro Ohshima, and Takenori Sukegawa. "Development of Safety Assessment Code for Decommissioning of Nuclear Facilities (DecDose)." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75123.

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A safety assessment code, DecDose, for decommissioning of nuclear facilities has been developed, based on the experiences of the decommissioning project of Japan Power Demonstration Reactor (JPDR) at Japan Atomic Energy Research Institute (now Japan Atomic Energy Agency). DecDose evaluates the annual exposure dose of the public and workers according to the progress of decommissioning of the plant, and also evaluates the public dose at accidental situations including fire and explosion. The public dose at normal situations during decommissioning is evaluated from the amount of radionuclides discharged from the plant to the atmosphere and the ocean. The amounts of radionuclides discharged depend on which and how activated and/or contaminated components and structures are dismantled. The amount is predicted by using the radioactive inventory given by the plant. The filtration efficiency of the ventilation system and decontamination factors of the liquid waste treatment system of the plant are also considered. Both of the internal dose caused by inhalation and ingestion of agricultural crops and seafood, and the external dose by radioactive aerosols airborne and radioactive deposition at soil surfaces are calculated for all of possible pathways. Also included in the external dose are direct radiation and skyshine radiation from waste containers which are packed and temporarily stored in the in-site building. For external dose of workers, the radiation dose rate from dismantling contaminated components and structures is calculated using the dose rate library which was previously evaluated by a point kernel shielding code. In this condition, radiation sources are regarded to be consisted of two parts; one is a dismantling object of interest, and the other is the sum of surrounding objects. Difference in job type or position is taken into account; workers for cutting are situated closer to a dismantling component, other workers help them at some distance, and the supervisor watches their activities from away. For worker’s internal dose, the radionuclide concentrations in air for individual radionuclides are calculated from a dismantling condition, e.g. cutting speed, cutting length of the dismantling component and exhaust velocity. A calculation model for working time on dismantling was developed using more segmented WBS (work breakdown structure). DecDose was partially verified by comparison with measured the external dose of workers during JPDR Decommissioning Project. The DecDose is expected to contribute to utilities in formulating rational dismantling plans and to the safety authority in estimating conservativeness in safety assessment of licensing application or risk-based regulatory criteria.
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Earnest, G., D. Chen, and D. Pui. "108. Filter Loading with Liquid Aerosols." In AIHce 2000. AIHA, 2000. http://dx.doi.org/10.3320/1.2763430.

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Karadag, Yasin, Mehdi Aas, Alexandr Jonáš, Suman Anand, David McGloin, and Alper Kiraz. "Dye lasing in optically manipulated liquid aerosols." In SPIE NanoScience + Engineering, edited by Kishan Dholakia and Gabriel C. Spalding. SPIE, 2013. http://dx.doi.org/10.1117/12.2024166.

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Geints, Yuri E., Vitalii A. Pogodaev, and Alexander A. Zemlyanov. "High-power laser interaction with liquid aerosols." In Photonics West '97, edited by Usamah O. Farrukh and Santanu Basu. SPIE, 1997. http://dx.doi.org/10.1117/12.273676.

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Tao, Ding, Yan Changqi, Cao Xiaxin, and Guo Zehua. "Experimental Investigation on Aerosols Collection Performance of Metal Fiber Filter in FCVS." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-66671.

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An experimental setup has been designed and fabricated for the analysis of filtration performance of the metal fiber filter as applied to Filtered Containment Venting System (FCVS). The main characteristic of this test facility is the presence of the aerosol and Scanning Mobility Particle Sizer. The objective is to investigate the removal performance of the metal fiber filter for aerosol, as well as further understand the filtration process in the metal fiber filter. It is observed that the metal fiber filter is capable of removing more than 99.955% aerosols at the desired flow rate ranging from 0.17 m/s to 0.3 m/s and the resistance has a significant linear correlation with flow rate. Due to the electrostatic effect, diffusion effect, inertia effect, interception effect and gravity effect, most penetrating particle size plays a significant role in removal performance of the metal fiber filter for aerosol. It is also found that with aerosol size ranging from 0.1 μ m to 0.3μm in most penetrating particle size, the filtration efficiency is more than 99.8% at the flow rate of 0.25 m/s. From this study, valuable reference data and useful information are provided for practical applications.
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Inci, Levent, and Richard K. Bowles. "The solubility transition in partially miscible, non-volatile liquid drops." In NUCLEATION AND ATMOSPHERIC AEROSOLS: 19th International Conference. AIP, 2013. http://dx.doi.org/10.1063/1.4803205.

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Baidakov, Vladimir G. "Nucleation in liquid solutions. The experimental research." In The 15th international conference on nucleation and atmospheric aerosols. AIP, 2000. http://dx.doi.org/10.1063/1.1361897.

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Li, Jiawen, Mingyi Chen, Li Li, Feng Liu, Yufei Gao, Jian Zhu, Jie Zhan, et al. "Preparation and Characterization of Radioactive Aerosol Protective Nanofiber Membranes." In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-92665.

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Abstract Radioactive aerosols are highly hazardous aerosols containing radionuclides. Inhalation of radioactive aerosols can lead to serious internal exposure hazards to human body. If discharged without proper treatment, it will also harm the working environment and even the ecological environment. Therefore, radioactive aerosol protection is a significant part of environmental protection and personnel protection in the nuclear field. However, majority of existing protective fabrics for radioactive aerosol filtration always meet the trade-off among filtration capacity, mechanical properties and air permeability. In this study, nanofiber layers were prepared by electrospinning technology using TPU, PVDF, PVA polymer materials and electret materials SiO2 as spinning materials. Composite membranes, prepared by coating different nanofiber layers on the PET non-woven fabrics substrate, were investigated. The results show that the 12wt% TPU nanofiber membrane has a three-dimensional spatial hierarchical structure. Its ultra-fine fiber diameter with small pore size greatly enhances the PM capture ability (PM0.3 filtration efficiency 99.99%); and the beaded spatial structure is beneficial to reduce the air resistance to 299 Pa (flow rate 95 L/min). Meanwhile, TPU nanofiber membrane has high extensibility, and it is superior to PVDF and PVA composite membranes in mechanical properties after thermal compounding. Appropriate content of SiO2 can improve filtration performance. The study shed light on developing electrospun nanofiber for radioactive aerosol protection, which can be used in the purification of ambient air in nuclear facilities, or as a high-performance fabric for radioactive aerosol protective clothing.
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Reports on the topic "Filtration of liquid aerosols"

1

Corey, I., and W. Bergman. Liquid filtration simulation. Office of Scientific and Technical Information (OSTI), June 1996. http://dx.doi.org/10.2172/387533.

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Fowler, V. L., and J. D. Hewitt. Filtration of Oak Ridge National Laboratory simulated liquid low-level waste. Office of Scientific and Technical Information (OSTI), August 1989. http://dx.doi.org/10.2172/5566601.

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Fowler, V. L., and J. D. Hewitt. Cross flow filtration of Oak Ridge National Laboratory liquid low-level waste. Office of Scientific and Technical Information (OSTI), December 1989. http://dx.doi.org/10.2172/7171538.

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Fairbaugh, Craig. Methods of Collecting and Separating Atmospheric Organic Aerosols for Analysis Using Two-Dimensional Gas and Liquid Chromatography with Mass Spectrometry. Portland State University Library, January 2015. http://dx.doi.org/10.15760/honors.155.

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Moneyhun, J., R. Jenkins, R. Ramsey, and T. Gayle. Chemical characterization and toxicological evaluation of airborne mixtures: A system for generating mixed aerosols from a petroleum based liquid and a fine solid. Office of Scientific and Technical Information (OSTI), March 1989. http://dx.doi.org/10.2172/6812338.

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Kent, T. E. Development and Deployment of a Full-Scale Cross-Flow Filtration System for Treatment of Liquid Low-Level Waste at Oak Ridge National Laboratory. Office of Scientific and Technical Information (OSTI), May 2000. http://dx.doi.org/10.2172/814070.

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Rapid Integrated Method for Total Dietary Fiber. Cereal & Grains Association, 2021. http://dx.doi.org/10.1094/aaccintmethod-32-60.01.

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This method determines total dietary fiber (TDF) in foods and food ingredients, as defined by Codex Alimentarius. The method measures soluble and insoluble dietary fiber, including resistant starch, as well as nondigestible oligosaccharides. In this method, enzymatic digestion is used to simulate human intestinal digestion. Insoluble dietary fiber (IDF) and soluble dietary fiber that precipitates in 78% ethanol (SDFP) are separated by filtration and quantified gravimetrically. Additionally, highly soluble oligosaccharides (SDFS) are quantified by chromatographic separation. TDF is reported as the sum of the gravimetric and high-performance liquid chromatography (HPLC) results. The digestion and chromatographic conditions of this method have been modified from those of AACC Approved Methods 32-45.01 and 32-50.01 in an attempt to better simulate human digestion and to allow for more exact quantitation.
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