Mapping Bubble Formation and Coalescence in a Tubular Cross-Flow Membrane Foaming System.

ABSTRACT: Membrane foaming is a promising alternative to conventional foaming methods to produce uniform bubbles. In this study, we provide a fundamental study of a cross-flow membrane foaming (CFMF) system to understand and control bubble formation for various process conditions and fluid properties. Observations with high spatial and temporal resolution allowed us to study bubble formation and bubble coalescence processes simultaneously. Bubble formation time and the snap-off bubble size (D0) were primarily controlled by the continuous phase flow rate (Qc); they decreased as Qc increased, from 1.64 to 0.13 ms and from 125 to 49 µm. Coalescence resulted in an increase in bubble size (Dcoal>D0), which can be strongly reduced by increasing either continuous phase viscosity or protein concentration-fa

SUBMITTER: Deng B 

PROVIDER: S-EPMC8468550 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature