Treatment of azo dye production wastewaters using Photo-Fenton-like advanced oxidation processes: Optimization by response surface methodology

Idil Arslan-Alaton*, Gokce Tureli, Tugba Olmez-Hanci

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

287 Citations (Scopus)

Abstract

Treatability of synthetic azo dye production wastewaters from Acid Blue 193 and Reactive Black 39 production and real Reactive Black 39 production effluent via Photo-Fenton-like process was investigated. Response surface methodology was employed to assess individual and interactive effects of critical process parameters (Fe3+, H2O2 concentrations; initial chemical oxygen demand (COD) and reaction time) on treatment performance in terms of color, COD and total organic carbon (TOC) removal efficiencies. Optimized reaction conditions for synthetic AB 193 production wastewater were established as Fe3+ = 1.5 mM; H2O2 = 35 mM for CODs ≤ 200 mg/L and a reaction time of 45 min. Under these conditions, 98% color, 78% COD and 59% TOC removals were experimentally obtained and fitted the model predictions well. The same model also described the treatment of synthetic Reactive Black 39 production wastewater satisfactorily. Experimentally achieved removals were considerably lower than model predictions for real Reactive Black 39 production effluent due to its high chloride content.

Original languageEnglish
Pages (from-to)142-153
Number of pages12
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume202
Issue number2-3
DOIs
Publication statusPublished - 25 Feb 2009

Funding

The authors are thankful to Dr. Rezzan Karaaslan (SETAS Chemical Company) for providing the chemicals used to prepare synthetic acid and reactive dye production wastewaters as well as the real reactive dye production effluent. The financial support of Istanbul Technical University Research Foundation is also appreciated.

FundersFunder number
Istanbul Technical University Research Foundation

    Keywords

    • Azo dye production wastewater
    • Photo-Fenton-like treatment
    • Process optimization
    • Response surface methodology (RSM)
    • {radical dot}OH scavenger Cl

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