TITLE:
Mechanistic Insight into Disinfection Using Ferrate(VI)
AUTHORS:
Djamel Ghernaout, Noureddine Elboughdiri
KEYWORDS:
Ferrate, Wastewater Treatment, Drinking Water, Disinfection, Green Technology, Iron
JOURNAL NAME:
Open Access Library Journal,
Vol.6 No.12,
December
3,
2019
ABSTRACT: Disinfection, chemical oxidation, and coagulation are key methods in water treatment. A chemical that may be used for all these targets is ferrate(VI). This work tries to bring some light into mechanisms implied throughout killing microbes using ferrate(VI). In acidic pH, the oxidation and reduction capacity of ferrate(VI) is superior to all currently utilized oxidizers and disinfectants in water and wastewater treatment. The technology of using ferrate(VI) for coagulation, chemical oxidation and disinfection of water and wastewater in a reactor simultaneously, can reduce the size of water and wastewater treatment plants and increase the treatment efficiency. Ferrate(VI) allows a novel emergency water treatment design for disaster-affected populations through the repercussions of natural disasters, through the concurrent and efficient elimination of microbial and chemical pollutants. The ferrates’ elevated performance and utilization as a green element for water treatment propose that these techniques remain greatly convenient for usage as pre- or post-treatment in traditional wastewater plants. It seems that there is no big difference in terms of ferrate’s action on pathogens with other chemical disinfectants. However, ferrate was found to be requiring lower needed doses as compared with other chemicals. More researches on disinfection by-products formation following ferrate injection as a disinfectant are required. Finally, ferrate(VI) deserves more attention to be used more largely through worldwide wastewater treatment plants.