Aerated iron electrocoagulation process as an emerging treatment method for natural water and wastewater

ABSTRACT Aerated iron electrocoagulation is an emerging field of water and wastewater treatment. In comparison with the conventional electrocoagulation process, aerated iron electrocoagulation process has higher pollutant removal efficiency and has the ability to generate oxidants like ferryl ions, which are able to oxidize the pollutants such as arsenite and organic compounds effectively. In addition, carbon-based materials used as cathodes (instead of iron) in aerated electrocoagulation process (the process is also known as peroxi-coagulation) offer significant advantages in modified electrocoagulation studies, since they are non-corrosive and inert. Peroxi-coagulation is able to generate oxidants such as hydrogen peroxide, and hydroxyl radicals, in addition to ferryl ions in aerated iron electrocoagulation process. For this reason, the uses of carbon-based materials such as graphite, and carbon nanotubes, as electrode materials are evaluated within the scope of the study.