Advances made in ferrate technology to treat water and wastewater

摘要

In recent years,iron in the +6 oxidation state,commonly called ferrate (FeⅥO42-,Fe(Ⅵ)) has been of great interest because of its dual role as a non-chlorine disinfectant/oxidant and a subsequent coagulation/precipitation as ferric hydroxide in water treatment.In the presentation,advances made in applications of ferrate technology to treat toxic metals,micropollutants,and toxins will be presented.The presentation will provide examples of the oxidation of pollutants by ferrate(Ⅵ) to demonstrate that oxidation of pollutants results in relatively non-toxic byproducts.Tests demonstrating the ferrate(Ⅵ) technology for removing pollutants in wastewater and industrial effluents will also be presented.The presentation will give examples of the oxidation of pollutants by ferrate(Ⅵ) to demonstrate that oxidation of pollutants results in relatively non-toxic by-products.The oxidation of pollutants by Fe(Ⅵ) by several possible routes will be discussed.Fe(Ⅴ) and Fe(Ⅳ) can then yield different final reduced species (Fe(Ⅱ) or Fe(Ⅲ)).