Mass transfer from freely rising microbubbles in aqueous solutions of surfactant or salt

The effect of ultrasound on bulk and surface nanobubbles: A review of the current status.

In situ characterisation of size distribution and rise velocity of microbubbles by high-speed photography

The use of micro-nano bubbles in groundwater remediation: A comprehensive review

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 energ...

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

Destabilization of ultrafine bubbles in water using indirect ultrasonic irradiation.

The present study focuses on the aeration of aqueous triethanolamine acting as reaction medium for biocatalytic carboxylations. For enhancing mass transfer in a bubble column reactor, microbubble aeration is applied and compared to conventional macrobubble aeration. Application of a 0.5 μm porous sparger enables microbubble CO2 aeration with bubble size distributions below 150 μm in Sauter mean diameter, correlating with the highest measured mass transfer rates. During CO2 saturation of the aqueous triethanolamine, bubble size distributions changed according to the level of CO2 saturation. For microbubbles, less foaming was observed compared to macrobubble aeration by a 10 μm porous sparger. This microbubble effect is attributed to their accelerated dissolution assisted by the Laplace pressure lowering the amount of bubbles reaching the surface of the liquid. The experiments reveal that the rate of interfacial area generation, which is calculated based on measured bubble size distributions, influences the biocatalyst activity.

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Shunya Tanaka

Papers

Mass transfer from freely rising microbubbles in aqueous solutions of surfactant or salt

Destabilization of ultrafine bubbles in water using indirect ultrasonic irradiation.

Microbubble enhanced mass transfer efficiency of CO2 capture utilizing aqueous triethanolamine for enzymatic resorcinol carboxylation

Mass Transfer from a Shrinking Single Microbubble Rising in Water

Generation and Long‐Term Stability of Ultrafine Bubbles in Water