Influence of flow and charge transfer inside membranes on measurements of membrane zeta potential

Measurements of zeta potential of membranes is usually treated based on Smoluchowski equation. However, in the case of membranes with sufficiently high porosity and permeability it is necessary to introduce a correction tatting into account the influence of the fluid flow and charge transfer inside the membrane itself and its influence of measurements of the zeta potential. Equations for calculations of modified zeta potential were deduced for both cases of measurements of streaming potential and streaming current considering flow and charge transfer inside the membrane. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

In the measurements of membranes with high porosity and permeability, it is necessary to introduce a correction that accounts for the influence of fluid flow and charge transfer inside the membrane. Equations for modified zeta potential calculations were derived for both streaming potential and streaming current measurements considering flow and charge transfer inside the membrane.