Magnetite nanoparticles functionalized with polypyrrole by pulsed sono-electrocrystallization and their applications for water treatment

Production, Characterization and Application of Ferrate(VI) in Water and Wastewater Treatments

“…The initial pH of the solution had little influence on the colour elimination by the ferrate(VI)-hypochlorite liquid mixture. KMnO 4 was also applied to degrade an Active Brillant Red X-3B (9% of TOC and 42% of COD and 99% of colour removal) [93] and for wastewater treatment comprising anthraquinone and azo dyes (colour removal of 87%) [13]. Additionally, the oxidation ability of ferrate(VI) to remove various pollutants in water and wastewater has been established [44].…”

“…The most known of these ferric or ferrous oxides include hematite, wuestite, magnetite, hypoferrite, ferrite, goethite, and akageneite [12]. Some of them such as magnetite and akageneite are currently utilised as powerful adsorbents in water, brine water and industrial wastewater treatment [13,14]. Iron can also appear in different forms with high oxidation states such as ferrate(IV [15,16].…”

Recent advances of magnetite nanomaterials to remove arsenic from water

“…37 The large surface area of nanoparticles and quantum size effects enhance the reactivity of nanoparticles with contaminants and give a high reaction rate for absorption and separation of pollutants from water. 38 …”