Bubble Formation Characteristic of Submerged Single-Hole Orifice in Aerosol Suspension

Sun, Qibing; Gu, Haifeng; Yu, Xiang; Yin, Weikai

doi:10.3389/fenrg.2019.00092

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…In addition, the increase in the temperature causes an increase in fluxes from hotter liquid to the clean gas carrier. The results are in good agreement with reports recently published in the literature; Sun and colleagues [23] reported that the temperature increase in the liquid phase from 25 °C to 65 °C led to a 30% increase in bubble detachment volume attributed to evaporation. Interestingly, for short columns, significant numbers of large millimetre-size drops could be observed on the walls of the vessel above the liquid level (Figure 6).…”

Section: Effect Of Temperature On Release Of Bioaerosolssupporting

confidence: 92%

Bioaerosol Emission from Vortex Liquids Contaminated with Escherichia coli Bacteria

Shafiq,

Agranovski

2024

Atmosphere

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Vortex fluids are often present in natural and artificial aquatic environments and are also widely used in industrial water treatment and product manufacturing processes. Vortex processes have been studied quite extensively; however, little attention has been paid to the potential release of biological aerosols to the ambient air in common situations involving microbial-contaminated vortex liquids. The model organism was Escherichia coli, a common Gram-negative coliform bacterium widely present in the aquatic and air environments. This study examines the influence of various parameters, including liquid rotation speed, column height, temperature, surface tension and vessel size, on the rate of bioaerosol formation. A commonly used single-stage bioaerosol impactor was employed to collect microbial aerosols at different process parameters under controlled laboratory conditions. The main results show that bioaerosol production increases markedly with increasing rotation speed, reaching a maximum rate at the highest value used in this project (1300 rpm). The tallness of the liquid column is strongly responsible for the bioaerosol production efficiency reaching a difference of almost one order of magnitude along the range between 45 mm (highest bioaerosol release) and 110 mm used in this research. Fluid temperature and surface tension are also very influential parameters responsible for bioaerosol generation during fluid vortex motion; corresponding results are discussed in this manuscript.

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Section: Effect Of Temperature On Release Of Bioaerosolssupporting

confidence: 92%

Bioaerosol Emission from Vortex Liquids Contaminated with Escherichia coli Bacteria

Shafiq,

Agranovski

2024

Atmosphere

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“…The results are in good agreement with reports recently pub-lished in the literature. In particular, Sun et al [17] reported that the temperature increase in the liquid phase from 25 • C to 65 • C led to a 30% increase in bubble detachment volume attributed to the evaporation. Poulain et al [9] showed that increased temperature of the solution led to more persistent bubbles that burst with the formation of bigger droplets.…”

Section: Effect Of the Temperature Of Microbial Suspensionmentioning

confidence: 99%

“…It was shown that the increased temperature of the solution prolongs the time the bubbles stay at the liquid-gas interface before bursting with a bigger droplets formation [9]. Sun et al [17] observed the gas and liquid temperature impacts on the bubble formation and concluded that the gas phase temperature did not cause significant alterations in the bubble detachment compared to the liquid temperature.…”

Section: Introductionmentioning

confidence: 99%

Bioaerosol Release from Concentrated Microbial Suspensions in Bubbling Processes

2022

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Bursting bubbles are one of the most common mechanisms in aerosols’ formation from natural and artificial waterbodies. The presence of microbial materials in the liquid could cause their aerosolization and generation of bioaerosols. The process depends on a number of parameters of the gas and liquid involved. This project investigated the influence of the air flow, bubble size, the temperature of the liquid and its surface tension on the efficiency of bioaerosol generation. It was found that the bioaerosol is more efficiently produced at higher air flow rates and smaller bubble size. The influence of the liquid temperature was also identified to be quite high, reaching an order of magnitude of the bioaerosol concentration over the temperature range from 4 °C to 38 °C. The addition of surfactants did suppress the foam formation, which was found to have a negative effect on the process; the rate of the bioaerosol generation increased with the increase in the antifoam concentration.

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Beyond bubbles: Unraveling the interfacial pH effects on bubble size distribution

da Silva,

Nobrega,

Staciaki

et al. 2024

Chemical Engineering Journal

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Bubble Formation Characteristic of Submerged Single-Hole Orifice in Aerosol Suspension

Cited by 5 publications

References 9 publications

Bioaerosol Emission from Vortex Liquids Contaminated with Escherichia coli Bacteria

Bioaerosol Emission from Vortex Liquids Contaminated with Escherichia coli Bacteria

Bioaerosol Release from Concentrated Microbial Suspensions in Bubbling Processes

Beyond bubbles: Unraveling the interfacial pH effects on bubble size distribution

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