TY - DATA T1 - Data underlying research for Effect of flow attack angle on spacer-induced electrokinetics in electrodialysis PY - 2023/09/08 AU - Rob Lammertink AU - Arputha Paul AU - J.A. (Jeffery) Wood UR - DO - 10.4121/2e540aef-452e-47ec-92db-9b9792830d3a.v1 KW - Electrodialysis KW - Flow attack angle KW - Spacer geometry KW - ion transport KW - electrokinetics KW - boundary layer N2 - <p>Spacer geometry plays an important role in membrane separation processes. In electrodialysis, spacer geometry affects not only the pressure-driven flow but can also possibly influence the local electric-field profile and with that the induced electro-osmotic flow by the spacer. </p><p>We previously demonstrated that using polyelectrolyte-coated spacers gave higher ionic currents for the same driving force, underscoring the additional electro-osmotic mixing from using spacers with charged surfaces. In this study, we expand this work to check the effect of electro-osmotic mixing in combination with spacers having different flow attack angles. We have compared, experimentally, the performance of ED using surface-charged spacers with three different flow attack angles. Our results showed that the spacers with 45$\degree$ flow attack angle outperformed the spacers with 30$\degree$ and 90$\degree$ flow attack angle when using uncoated spacers for certain applied voltage (3 to 8V). On the other hand, an improved effect of a charged coating was mostly observed for the spacer with a 45$\degree$ flow attack angle.</p> ER -