3D printed manifolds for improved flow management in electrodialysis operation for desalination

Desalination with electrodialysis requires cell designs for optimal flow distribution. Such units include polymeric frames, electrodes, membranes and spacers. Frames are used mechanical support of electrodes hydraulic connectors. Their geometry needs to be customized appropriate fluid management compartmentalization. Typically, such frames manufactured by drilling solid plastic blocks. However, design flexibility is required fit the increasing number developments incorporating new materials inter-connectivity. Here we propose additive manufacturing coupled computational optimize dynamics their coupling physical devices. First, CAD models proposed incorporate major improvements in process lines, integrate internal manifold cavities. Even pressure drop distributions verified numerical at given flowrates. The were 3D printed assembled investigate performance, experimentally confirm predictions. Compared conventional as a result even distribution fluids inside cell, it was possible reach an improved (21% higher) limiting current density while ensuring pH stability. Finally, our approach can integrated designs, taking advantage material selection geometrical complexity 3D-printing add novel functionalities.