Modeling and experimental validation of the steady-state counteractive facilitated transport of Th(IV) and hydrogen ions through hollow-fiber renewal liquid membrane

3D Printed Microfluidic Supported Liquid Membrane Module for Radionuclide Separations

“…The ease of fabricating 3D printed microfluidic devices lends itself to the rational design of SLM separations making use of mathematical mass transport models. In the past 20 years, as computational power and algorithms have improved, rigorous numerical models describing transport in SLM extraction have become more common in the literature, as described in reviews by Bringas et al and Dash et al , Previously, many assumptions were required to solve simplified relationships for steady- and unsteady-state metal ion concentrations in SLM separations, and such practical, rapidly solvable models are still used to interpret experimental data. , Recently, sophisticated and computationally demanding numerical models using computational fluid dynamics (CFD) combined with mass transport modeling to fully describe the spatial distribution of metal concentrations, fluid velocities, and pressures have been reported for a number of metal–liquid membrane systems. Ghadiri et al reported a CFD-based model for the transport of rubidium by dicyclohexano-18-crown-6 in an axially symmetric two-dimensional (2D) HF-SLM system.…”