Enhanced coagulation with potassium ferrate(VI) for removing humic substances

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69 Citations (Scopus)

Abstract

Potassium ferrate (K2FeO4) has the strongest oxidation strength among all the oxidants/disinfectants practically used for water and wastewater treatment. Apart from this, in the oxidation process, ferrate(VI) ions are reduced to Fe(III) ions or ferric hydroxide, and this simultaneously generates a coagulant in a single dosing and mixing unit process. This paper demonstrates that potassium ferrate can perform better than ferric sulphate at lower doses for treating waters containing humic and fulvic acids in terms of removing UV254 absorbance and dissolved organic carbon (DOC) and lowering the trihalomethane formation potential (THMFP), indicating that the potassium ferrate is a potential water treatment chemical for "enhanced coagulation".

Original languageEnglish
Pages (from-to)627-633
Number of pages7
JournalEnvironmental Engineering Science
Volume20
Issue number6
DOIs
Publication statusPublished - 6 Jul 2004
Externally publishedYes

Keywords

  • Disinfection byproducts
  • Enhanced coagulation
  • Humic substances
  • Potassium ferrate(VI)
  • Water treatment

ASJC Scopus subject areas

  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

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