Effects of reaction conditions on nuclear laundry water treatment in Fenton process

Miia Vilve, Arja Hirvonen, Mika Sillanpää

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


This study presents the efficiency of Fenton process in the degradation of organic compounds of nuclear laundry water. The influence of Fe2+ and hydrogen peroxide ratio, hydrogen peroxide dose, pH and treatment time were investigated. The degradation of non-ionic surfactant and other organic compounds was analysed as COD, TOC and molecular weight distribution (MWD). The most cost-effective degradation conditions were at H2O2/Fe2+ stoichiometric molar ratio of 2 with 5 min mixing and H2O2 dose of 1000 mg l-1. With the initial pH of 6, the reductions of COD and TOC were 85% and 69%, respectively. However, the removal of the organic compounds was mainly carried out by Fenton-based Fe3+ coagulation rather than Fenton oxidation. Fenton process proved to be much more efficient than previously performed ozone-based oxidation processes.

Original languageEnglish
Pages (from-to)1468-1473
Number of pages6
JournalJournal of Hazardous Materials
Issue number2-3
Publication statusPublished - 30 May 2009
Externally publishedYes


  • Coagulation
  • Fenton process
  • Non-ionic surfactant
  • Wastewater
  • pH

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis


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