(562u) Pulsed Electric Field (PEF) Device Equipped with a Cathode Decorated with Copper-Titania Nanostructures for Enhanced Water Denitrification
This study investigated the inclusion of copper-titania nanostructures on a titanium plate cathode for the electrochemical reduction of nitrate to nitrogen. The cathode was incorporated in a batch-type undivided electrolytic cell, which allows simultaneous reduction and oxidation reactionsâa process that may be detrimental to reduction efficiency since reduced nitrate can be re-oxidized near the anode but can be an opportunity to improve selectivity towards the favored harmless nitrogen. The system was operated under pulsed electric field which greatly decreased the needed electrical energy input to reduce a unit concentration of nitrate in the synthetic contaminated ground water. Parametric electric field simulations via COMSOL Multiphysics validated the improved electric field strengths brought by the addition of copper-titania nanostructures and directed the eventual design of a flow-through denitrification device.