<p>Effluents from the textile industry contain a high concentration of pollutants, including many non-biodegradable compounds that threaten both the environment and human health. Traditional biological and physical treatment techniques are generally insufficient to remove these persistent contaminants effectively. As a result, advanced oxidation methods such as electrocoagulation have gained attention for wastewater remediation. This study focused on the removal of methylene blue, a synthetic dye commonly found in textile wastewater, using electrocoagulation with iron and aluminum electrodes. Key operational parameters, namely pH, electrolysis time, current density, and electrode material, were systematically evaluated to optimize dye removal. Results revealed that the highest decolorization efficiency of 80.1% was achieved at neutral pH (7), with iron electrodes operating at a current density of 3.75 A/cm<sup>2</sup> over four hours of electrolysis. These findings highlight the superior performance of iron electrodes compared to aluminum electrodes in treating methylene blue-contaminated wastewater via electrocoagulation, indicating their potential for efficient and sustainable textile effluent treatment.</p>

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Comparative electrocoagulation removal of methylene blue with iron and aluminum electrodes

  • A. Salim,
  • E. M. El Handaoui,
  • O. Fanidi,
  • A. Jrifi,
  • A. El Bouari,
  • M. Tahiri,
  • O. Tanane

摘要

Effluents from the textile industry contain a high concentration of pollutants, including many non-biodegradable compounds that threaten both the environment and human health. Traditional biological and physical treatment techniques are generally insufficient to remove these persistent contaminants effectively. As a result, advanced oxidation methods such as electrocoagulation have gained attention for wastewater remediation. This study focused on the removal of methylene blue, a synthetic dye commonly found in textile wastewater, using electrocoagulation with iron and aluminum electrodes. Key operational parameters, namely pH, electrolysis time, current density, and electrode material, were systematically evaluated to optimize dye removal. Results revealed that the highest decolorization efficiency of 80.1% was achieved at neutral pH (7), with iron electrodes operating at a current density of 3.75 A/cm2 over four hours of electrolysis. These findings highlight the superior performance of iron electrodes compared to aluminum electrodes in treating methylene blue-contaminated wastewater via electrocoagulation, indicating their potential for efficient and sustainable textile effluent treatment.