Taylor bubble formation and flowing in a straight millimetric channel with a cross-junction inlet geometry Part II: Gas-liquid mass transfer

Mei, Mei; Men, Claude Le; Loubière, Karine; Hébrard, Gilles; Dietrich, Nicolas

doi:10.1016/j.ces.2022.117752

Cited by 5 publications

(3 citation statements)

References 43 publications

(54 reference statements)

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“…Such fast decay has a direct consequence for implementing the calibration procedure linking the GV intensity to the ''equivalent'' dissolved oxygen concentration, as done in the resazurin-based colorimetric methods [32,34,35]. As the orange signal can only be captured in the vicinity and in the near-field wake of the bubble (see Fig.…”

Section: Decay Of the Intermediary Orange Cu(iii) Complex And Calibra...mentioning

confidence: 99%

“…This was firstly demonstrated by Dietrich et al 32 with the resazurin dye for Taylor bubbles flowing in a millimetric channel. Later extensions to other confined geometries 33–37 or dyes such as the leuco‐indigo carmine followed 38. The conversion of dyes like leuco‐indigo carmine, resazurin or methylene blue with molecular oxygen results in a specific color change with literature‐known absorption maxima 39.…”

Section: Introductionmentioning

confidence: 99%

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Reactive Mass Transfer around Isolated Bubbles Rising in a Thin‐Gap Cell

Laurini,

Béteille,

Fink

et al. 2023

Chem Eng & Technol

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The reactive mass transfer around isolated bubbles of pure oxygen rising in a thin‐gap cell filled with acetonitrile at rest is investigated. A colorimetric technique based on the bio‐inspired copper(I) complex [Cu(TMG2tol)]OTf is used. The gap‐ and time‐averaged dissolved oxygen concentration fields can be measured in the far‐wake of the bubbles with 3 < d < 47 mm. The variations of the Sherwood numbers with the Péclet numbers indicate that the mass transfer results obtained are identical with the ones measured earlier with the copper(I) complex [Cu(btmgp)I]. This demonstrates the independency of mass transfer from the properties of the chemical system used. The results significantly enlarge the existing database, which is of great importance to establish robust scaling laws.

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Section: Decay Of the Intermediary Orange Cu(iii) Complex And Calibra...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reactive Mass Transfer around Isolated Bubbles Rising in a Thin‐Gap Cell

Laurini,

Béteille,

Fink

et al. 2023

Chem Eng & Technol

Self Cite

View full text Add to dashboard Cite

show abstract

“…The thin lubrication liquid film surrounding the gas bubbles [53][54][55][56][57][58] and the recirculation vortexes generated inside the liquid slugs 55,[57][58][59][60] endow segmented flows with excellent mass transfer properties. [61][62][63][64][65][66][67][68] The ideal channel geometry to generate plasma in segmented flows should involve high aspect ratio channels as a low distance between electrodes makes plasma breakdown more easily while a broad width increases the gas-to-electrode surface ratio and allows the use of higher flow rates for production. Segmented flows in circular channels have been thoroughly explored (the interested reader can refer to these reviews, ref.…”

Section: Introductionmentioning

confidence: 99%