Aims: The aim of this research paper is to examine the efficiency of electrooxidation and
electrocoagulation techniques to remove the textile dye Maxilon Red GRL from polluted
water.
Study Design: The study was performed by using two graphite electrodes as
anode and cathode for electrooxidation (EO) and a stainless steel electrode as
anode and graphite as cathode for electrocoagulation (EC).
Place and Duration of Study: Chemistry Department, Faculty of Science, Benha
University, 13518 Benha, Egypt, between April 2013 and July 2013.
Methodology: The experiments were carried out in a glass beaker containing 100 ml of
dye solution. The two electrochemical techniques; EO and EC were performed to optimize
both methods for maximum dye removal. The removal process was studied at different
conditions of pH, treatment time, electrolyte concentration, current density, potential
difference between electrodes and initial dye concentration.
Results: The results indicate that the optimum pH for EO is 5, while that for EC is 9. The
increase of current density and cell voltage results in a corresponding increase in the
removal efficiencies. Complete decolorization was achieved after 120 and 90 minutes for
the EO and EC processes, respectively.
Conclusion: High levels of elimination of Maxilon Red GRL dye by EO or EC reached
nearly 100% were detected by optimizing the experimental conditions.