Remediation/Treatment

Application of Fenton process for decolorization of reactive black 5 from synthetic wastewater: Kinetics and thermodynamics

  1. Mehmet Emin Argun1,*,
  2. Mustafa Karatas2

Article first published online: 19 OCT 2010

DOI: 10.1002/ep.10504

Issue

Environmental Progress & Sustainable Energy

Environmental Progress & Sustainable Energy

Volume 30, Issue 4, pages 540–548, December 2011

Additional Information

How to Cite

Argun, M. E. and Karatas, M. (2011), Application of Fenton process for decolorization of reactive black 5 from synthetic wastewater: Kinetics and thermodynamics. Environ. Prog. Sustainable Energy, 30: 540–548. doi: 10.1002/ep.10504

Author Information

  1. 1

    Department of Environmental Engineering, Engineering and Architecture Faculty, Selcuk University, 42003 Konya, Turkey

  2. 2

    Department of Environmental Engineering, Engineering Faculty, Aksaray University, Aksaray, Turkey

*Department of Environmental Engineering, Engineering and Architecture Faculty, Selcuk University, 42003 Konya, Turkey

Publication History

  1. Issue published online: 14 NOV 2011
  2. Article first published online: 19 OCT 2010
  3. Manuscript Accepted: 25 JUL 2010
  4. Manuscript Revised: 10 MAY 2010
  5. Manuscript Received: 23 FEB 2010

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Keywords:

  • Fenton process;
  • reactive black 5;
  • decolorization;
  • kinetics;
  • thermodynamics

Abstract

The decolorization and degradation efficiency of the azo dye Reactive Black 5 (RB5) by Fenton system were investigated in this study. The operation parameters such as Fe2+:H2O2 ratio, pH value, initial concentration of RB5, reaction time, and temperature were examined. Maximum decolorization (99%) and degradation (88% COD removal) efficiencies were achieved at the Fe2+:H2O2 ratio of 0.05 and pH 3 for 15-min reaction time. The decolorization kinetic of RB5 followed pseudo-second-order reaction kinetic. The increase of temperature caused decreasing of obtained rate constants and increasing of corresponding half-lives. The article also discussed thermodynamic parameters including changes in Gibbs free energy, enthalpy, and entropy for the decolorization of RB5 by Fenton and exposed that the oxidation process was spontaneous and exothermic under natural conditions. © 2010 American Institute of Chemical Engineers Environ Prog, 2010

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