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

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

“…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.…”

“…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.…”

Microreactor designed for efficient plasma–liquid segmented flows

“…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.…”