Geometrical influence on mixing in helical porous membrane microcontactors

► Geometrical parameters influence of porous helical membrane gas-liquid contactor. ► Gas-liquid contacting (mixing) studies performed experimentally and numerically. ► Optimization study - Taguchi method (DOE) for performance criterion-mixing index. ► Helical pitch, curvature radius and internal diameter are key parameters for mixing. ► Relevant for membrane based G-L processes to overcome mass transport limitations.