| Popis: |
Over the past decades, soluble compounds with iron in high oxidation state(s) (so-called ferrates) have turned out to be a highly promising and “green” oxidants deployed in water treatment technologies. Ferrates(IV, V, VI) have good oxidation properties, as indicated by the magnitude of the oxidation-reduction potential (an acidic reaction with an oxidation-reduction potential of 2.20 V, in the basic environment it is 0.72 V), making them interesting for oxidation of inorganic compounds including metals, the decomposition of broad range of organic pollutants including various types of micropollutants found in wastewater (pesticides, pharmaceuticals, and drugs), and for disinfection. The important advantage of ferrates is also their minimal environmental load as the reactions result in the formation of benign iron hydroxides. The only limitation of using ferrates in practice is their demanding production as well as their instability due to the high electron affinity of hexavalent iron. |
