The modelling of ozone mass transfer in static mixers using Back Flow Cell Model

Tizaoui, Chedly; Zhang, Yanmin

doi:10.1016/j.cej.2010.05.061

Cited by 19 publications

(7 citation statements)

References 19 publications

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“…. This is because at lower flow rates, ozone concentration increases (Tizaoui & Zhang, 2010). Higher oxygen flow rates usually produce larger bubbles whereas lower flow rates produce smaller bubbles (Kukuzaki et al, 2010).…”

Section: Factors That Contribute To High Algae Cell Mortalitymentioning

confidence: 95%

An investigation into the efficacy of ozone for inactivation of microalgae cells in photobioreactors

Clarke

Solan²,

Tiwari³

et al. 2013

2013 Kansas City, Missouri, July 21 - July 24, 2013

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Section: Factors That Contribute To High Algae Cell Mortalitymentioning

confidence: 95%

An investigation into the efficacy of ozone for inactivation of microalgae cells in photobioreactors

Clarke

Solan²,

Tiwari³

et al. 2013

2013 Kansas City, Missouri, July 21 - July 24, 2013

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“…Gas utilization efficiency relates to how much of the supplied gas is transferred into the liquid and is calculated as (Tizaoui and Zhang, 2010;Zhang et al, 2013):…”

Section: Gas Utilization Efficiencymentioning

confidence: 99%

Microbubbles and their application to ozonation in water treatment: A critical review exploring their benefit and future application

John

Brookes

Carra

et al. 2020

Critical Reviews in Environmental Science and Technology

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Ozonation is a widely applied water treatment process, used for oxidation of contaminants, as well as for the disinfection of water. However, the conventional ozonation process demands a high energy requirement and deep tanks to ensure effective mass transfer and oxidation.Microbubble technologies have emerged which have the potential to improve gas-liquid contacting. Microbubbles have diameters of 1-100 µm, while conventional bubbles used in ozonation are between 2 -6 mm. Microbubbles have many favorable characteristics that make them suitable for ozonation. In this review, the attributes of microbubbles for ozonation have been compared with those of conventional bubbles. The higher interfacial area and lower rise velocity of microbubbles compared with conventional bubbles means that ozone in the gas phase can be more efficiently transferred into the liquid phase. This is due to a higher contact time and increased contact area of the bubble with the bulk liquid. The analysis reveals that the volumetric mass transfer coefficient can be significantly enhanced through the use of microbubbles. In addition, the steady state dissolved ozone concentration was positively impacted by the use of microbubbles. Microbubbles were shown to be able to oxidize a broader range of organic compounds more quickly than for conventional bubbles. However, the review highlighted that comparison of microbubbles with conventional bubbles is not always carried

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“…In gas/liquid dispersions, an open geometry with blades is usually recommended and employed (Thakur et al 2003;Madhuranthakam et al 2009a). In recent decades, there has been an increasing amount of literature and studies on gas/liquid dispersions using static mixers (Chisti et al 1990;Paul et al 2004;Al Taweel et al 2005;Fradette et al 2006;Keshav et al 2008;Madhuranthakam et al 2009a;Tizaoui and Zhang 2010). In view of all that has been mentioned so far, one may suppose that the SMX TM Sulzer static mixer is highly adapted for this dispersion, since this mixing device is structured with oblique open blades.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamics of gas-liquid dispersion in transparent Sulzer static mixers SMXTM

Scala

Gamet

Malbec

et al. 2020

Chemical Engineering Science

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The modelling of ozone mass transfer in static mixers using Back Flow Cell Model

Cited by 19 publications

References 19 publications

An investigation into the efficacy of ozone for inactivation of microalgae cells in photobioreactors

An investigation into the efficacy of ozone for inactivation of microalgae cells in photobioreactors

Microbubbles and their application to ozonation in water treatment: A critical review exploring their benefit and future application

Hydrodynamics of gas-liquid dispersion in transparent Sulzer static mixers SMXTM

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