Comparison of electrocoagulation, coagulation and the Fenton process for the treatment of reactive dyebath effluent

I. Kabdaşli*, I. Arslan-Alaton, B. Vardar, O. Tünay

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

24 Citations (Scopus)

Abstract

In this paper, experimental studies were performed on a simulated reactive dyebath effluent to compare coagulation-flocculation and Fenton's oxidation with electrocoagulation using stainless steel (SS 304) and aluminium electrodes in terms of colour and COD removals as well as AOX formation potential and improvement of biological treatability. Results have indicated that FeCl3 and alum coagulation had little effect on colour removal whereas comparable colour removal efficiencies with those of electrocoagulation with steel electrodes and Fenton's oxidation were attained by FeSO4 coagulation. Almost complete colour removals accompanied with 77% COD abatement were obtained by both electrocoagulation with steel electrodes and Fenton's oxidation under optimised reaction conditions. Although electrocoagulation with aluminium electrodes yielded very limited colour removal and produced a high amount of sludge upon extended reaction time, this application brought about a marked improvement in biodegradability.

Original languageEnglish
Title of host publicationWaste Management Problems in Agro-Industires 2006
EditorsD. Orhon, R. Tasli, O. Karahan, G.E. Zengin
Pages125-134
Number of pages10
Edition10
DOIs
Publication statusPublished - 2007

Publication series

NameWater Science and Technology
Number10
Volume55
ISSN (Print)0273-1223

Keywords

  • AOX formation potential
  • Coagulation
  • Electrocoagulation treatment
  • Fenton's oxidation
  • Reactive dyebath effluent
  • Steel and aluminium electrodes

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