(86e) Graphene Coated Nickel Foam - a Novel Electrode for Electroperoxone Treatment of Emerging Pharmaceutical Contaminants
AIChE Annual Meeting
2018
2018 AIChE Annual Meeting
Environmental Division
Fundamentals of Environmental Kinetics and Reaction Engineering
Monday, October 29, 2018 - 9:24am to 9:45am
Typically, .OH radical generation (required for complete TOC mineralization) can be achieved only in the presence of Fe2+, ozone or a catalyst. Here, interestingly, we observed .OH radical generation during electrolysis using GrNF electrode, without the need for ozone, mechanisms for which will be discussed. Electrolysis using RVC electrode yielded a TOC removal of only 19%, while the use of GrNF electrode yielded a removal of 28% in 120 minutes. For the case of electroperoxone, complete mineralization of TOC is achieved within 120 minutes. In addition, optimization of H2O2 generation under conditions such as varying aeration rates, applied current, electrode surface area and solution pH was performed. We thus show that the enhanced performance of GrNF electrode over conventional ones such as RVC, along with capability of .OH radical generation in the absence of ozone, makes it an attractive electrode for use in electroperoxone.