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Evaluation of Electrochemical and Fenton Processes in the Treatment of Mature Landfill Leachates

Authors(6) :-Alan Oliveira, Alexandre Cerqueira, Paulo Souza, Michelle Rigo, Julieta Paiva, Monica Marques

In this study, the effects of various operating conditions (reaction time, current intensity, pH and H2O2 concentration) in treatment of old municipal landfill leachates by using electrochemical processes (electroflocculation, electro-Fenton and combined electroflocculation+electro-Fenton) was compared to Fenton's reagent oxidation process. The results of this work showed that, E-Fenton technology may be used efficiently for treatment of old municipal landfill leachates by using appropriate operating conditions. The best removal efficiency was obtained when the following operating conditions were used: reaction time of 30 minutes, current intensity of 2A, H2O2 concentration of 0.5% and pH=3. In these conditions, the removal efficiencies achieved for chemical oxygen demand, colour and turbidity were, respectively: 70±2%, 92±2% and 92±2%. The results obtained by the present study revealed that the E-Fenton electrochemical process was efficient in the removal of high concentrations of chemical oxygen demand, colour and turbidity and could be an environmentally promising alternative for the treatment of mature landfills leachates. Furthermore, this process showed lower energy cost and consumption of electrodes
Alan Oliveira, Alexandre Cerqueira, Paulo Souza, Michelle Rigo, Julieta Paiva, Monica Marques
Landfill Leachate, Electro-Fenton, Electroflocculation, Alternating Current and Fenton
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Publication Details
  Published in : Volume 3 | Issue 1 | January-February 2017
  Date of Publication : 2017-02-28
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 285-293
Manuscript Number : IJSRST173160
Publisher : Technoscience Academy
PRINT ISSN : 2395-6011
ONLINE ISSN : 2395-602X
Cite This Article :
Alan Oliveira, Alexandre Cerqueira, Paulo Souza, Michelle Rigo, Julieta Paiva, Monica Marques, "Evaluation of Electrochemical and Fenton Processes in the Treatment of Mature Landfill Leachates", International Journal of Scientific Research in Science and Technology(IJSRST), Print ISSN : 2395-6011, Online ISSN : 2395-602X, Volume 3, Issue 1, pp.285-293, January-February-2017
URL : http://ijsrst.com/IJSRST173160