This work concerns with electrocoagulation (EC) of bromophenol blue (BB) synthetic solutions using aluminum electrodes. First, some parameters such as BB concentration, solution conductivity, and inter-electrode distance were fixed with slow magnetic mixing of the solution during experiments varying the contact time from 5 to 90 min for different pH and applied voltage values. The optimal conditions for these experiments were found to be pH 10 and applied voltage 12 V (0.5 A, 143 A/m2) for 95% removal of BB. Further, these optimal conditions were fixed and the other parameters such as BB solution concentration, solution conductivity, inter-electrode distance, and mixing velocity were varied. This research shows that EC process remains an interesting and valuable technology for textile dye wastewater treatment even though industrial scale applications must be realized to improve its wide acceptation.
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