Water, Air, & Soil Pollution

, Volume 223, Issue 5, pp 2023–2034

Biodegradability Improvement of Sulfamethazine Solutions by Means of an electro-Fenton Process

Authors

  • Dorsaf Mansour
    • Université Rennes 1, Ecole Nationale Supérieure de Chimie de Rennes, CNRS
    • Laboratoire de Chimie Analytique et Électrochimie, Département de ChimieFaculté des Sciences de Tunis
    • Institut National des Sciences Appliquées et de Technologie
    • Université Européenne de Bretagne
  • Florence Fourcade
    • Université Rennes 1, Ecole Nationale Supérieure de Chimie de Rennes, CNRS
    • Université Européenne de Bretagne
  • Nizar Bellakhal
    • Laboratoire de Chimie Analytique et Électrochimie, Département de ChimieFaculté des Sciences de Tunis
    • Institut National des Sciences Appliquées et de Technologie
  • Mohamed Dachraoui
    • Laboratoire de Chimie Analytique et Électrochimie, Département de ChimieFaculté des Sciences de Tunis
  • Didier Hauchard
    • Ecole Nationale Supérieure de Chimie de Rennes, CNRS
    • Université Européenne de Bretagne
    • Université Rennes 1, Ecole Nationale Supérieure de Chimie de Rennes, CNRS
    • Université Européenne de Bretagne
Article

DOI: 10.1007/s11270-011-1002-7

Cite this article as:
Mansour, D., Fourcade, F., Bellakhal, N. et al. Water Air Soil Pollut (2012) 223: 2023. doi:10.1007/s11270-011-1002-7

Abstract

The main objective of this study was to examine the effect of an electro-Fenton pretreatment on the biodegradability of sulfamethazine-polluted solutions. The aim of the pretreatment was only to degrade this molecule in order to increase the biodegradability of the effluent and therefore allow a subsequent biological treatment. Preliminary tests showed the absence of biodegradability of the target compound. The degradation of sulfamethazine by electro-Fenton process was then examined using a carbon felt cathode and a platinum anode in an electrochemical reactor containing 1 L of solution. The influence of some experimental parameters such as initial concentration, temperature and current intensity on the degradation by electro-Fenton step has been investigated. In addition, the biodegradability of the solution after electrochemical pretreatment was examined and showed a Biological Oxygen Demand (BOD5) on Chemical Oxygen Demand (COD) ratio above the limit of biodegradability, namely 0.4, for several experimental conditions. The feasibility of coupling an electro-Fenton pretreatment with a biological degradation of by-products in order to mineralize polluted solutions of sulfamethazine was confirmed.

Keywords

Biodegradability improvementElectro-Fenton pretreatmentCoupled processesDrug removalSulfatmethazine

Copyright information

© Springer Science+Business Media B.V. 2011