Color and COD removal from wastewater containing Reactive Black 5 using Fenton's oxidation process

Süreyya Meriç*, Deniz Kaptan, Tuǧba Ölmez

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

335 Citations (Scopus)

Abstract

In this study, Reactive Black 5 (RB5) was removed from synthetic wastewater using Fenton's oxidation (FO) process. Experiments were conducted on the samples containing 100 and 200 mg 1-1 of RB5 to remove the dye toxicity. Seventy-five milligram per litre of RB5 caused 25% toxicity on 24-h born daphnids whereas 100 mg 1-1 of RB5 displayed 100% toxicity on Daphnia magna. The study was performed in a systematic approach searching optimum values of FeSO4 and H2O2 concentrations, pH and temperature. Optimum pH and temperature for 100 mg 1 -1 of RB5 were observed as 3.0 and 40 °C, respectively, using 100 mg 1-1 of FeSO4 and 400 mg 1-1 of H 2O2 resulted in 71% chemical oxygen demand (COD) and 99% color removal. For 200 mg 1-1 of RB5, 84% COD removal was obtained using 225 mg 1-1 of FeSO4 and 1000 mg 1-1 of H2O2 yielding 0.05 molar ratio at pH 3.0 and 40 °C. Color removal was also more than 99%. The optimum conditions determined in accordance with the literature data. The H2O2 requirement seems to be related to initial COD of the sample. FeSO4/H 2O2 ratios found were not changed for both concentrations. The temperature affected the COD removal significantly at high degrees. Toxicity was completely removed for each concentration of RB5 at optimum removal conditions.

Original languageEnglish
Pages (from-to)435-441
Number of pages7
JournalChemosphere
Volume54
Issue number3
DOIs
Publication statusPublished - Jan 2004

Keywords

  • Color and COD removal
  • Fenton's oxidation process
  • Reactive Black 5
  • Toxicity reduction

Fingerprint

Dive into the research topics of 'Color and COD removal from wastewater containing Reactive Black 5 using Fenton's oxidation process'. Together they form a unique fingerprint.

Cite this