Multiphase CO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.svg"><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math> dispersions in microfluidics: Formation, phases, and mass transfer

The dissolution and microfluidic mass transfer of carbon dioxide in water at high-pressure conditions are crucial for a myriad technological applications, including microreactors, extractions, capture, utilization, sequestration (CCUS) processes. In this experimental work, we use method to elucidate the process CO2 high pressure. An intriguing multiphase flow dispersions observed when operating pressure-temperature ($P$-$T$) condition close gas-liquid phase boundary ($P=6.5$ MPa $T=23.5\pm 0.5~^{\circ}$C). We propose series strategies unravel complex multi-phase dynamics by calculating each phase's volume change coexistent dispersion, estimating possible concentration water, comparing with solubility data. Finally, quantify directly rate volumetric coefficient ($k_{L}a$). results show that may be influenced specific area ($a$), gradient slug, traveling speed dispersion.