&lt;div&gt;The application of gas-phase pulsed corona discharge (PCD) has been proven highly feasible and energy efficient in removal of aqueous organics. A particularly efficient configuration is the vertical reactor construction wherein the treated solution is showered through the non-thermal plasma, produced in pulses from a set of high voltage wires between grounded electrode plates. The system efficiency relies strongly in the utilization of OH-radicals that are produced directly from the water molecules by the electron bombardment of the corona discharge pulses. The primary environment for oxidation by OH-radical is therefore the gas-liquid interface of the water showering through the plasma volume. In this study, the effects of the hydrodynamic conditions and the gas-liquid surface area in the plasma volume were investigated. The observed optimal conditions were then applied in a practical case study of removing a micropollutant from both synthetic solutions and actual wastewater effluent from a municipal wastewater treatment plant. For the target micropollutant, the anti-epileptic drug carbamazepine was selected for having been reported ubiquitous in the environment an for the abundant literature available in similar oxidation processes of the substance, e.g. by conventional ozonation. During the course of experiments, it was found that (i) the hydrodynamic conditions have significant effect on oxidation energy efficiency in PCD treatment, and that (ii) the technology is highly feasible in removal of the target micropollutant as well as its identified oxidation products.&lt;/div&gt;

Pulsed corona discharge induced oxidation of aqueous organics: Optimization of hydrodynamic conditions and application in removal of micropollutants

251st National Meeting (2016)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.