Treatment of Industrial Wastewater by Homogeneous Fenton Oxidation: Application to Textile Effluents
Koffi Midha Amah Grâce Pascale
Laboratory of Geographical Sciences, Civil Engineering and Geosciences (LASCIG3) of the Joint Research and Innovation Unit for Engineering Sciences and Techniques (UMRI-STI) of the Institut National Polytechnique Félix HOUPHOUËT-BOIGNY (INP-HB), BP 1093 Yamoussoukro, Côte d'Ivoire.
Konan Gbangbo Rémis *
Laboratory of Geographical Sciences, Civil Engineering and Geosciences (LASCIG3) of the Joint Research and Innovation Unit for Engineering Sciences and Techniques (UMRI-STI) of the Institut National Polytechnique Félix HOUPHOUËT-BOIGNY (INP-HB), BP 1093 Yamoussoukro, Côte d'Ivoire.
Briton Bi Gouessé Henri
Laboratory of Industrial Processes and Synthesis of the Environment and New Energies, of the Institut National Polytechnique Félix HOUPHOUËT-BOIGNY (INP-HB), BP 1093 Yamoussoukro, Côte d'Ivoire.
Abro Koutouan Désiré Martial
Laboratory of Industrial Processes and Synthesis of the Environment and New Energies, of the Institut National Polytechnique Félix HOUPHOUËT-BOIGNY (INP-HB), BP 1093 Yamoussoukro, Côte d'Ivoire.
Kouassi Akoua Kra Estelle Epse AKA
Laboratory of Industrial Processes and Synthesis of the Environment and New Energies, of the Institut National Polytechnique Félix HOUPHOUËT-BOIGNY (INP-HB), BP 1093 Yamoussoukro, Côte d'Ivoire.
Yao Kouassi Benjamin
Laboratory of Industrial Processes and Synthesis of the Environment and New Energies, of the Institut National Polytechnique Félix HOUPHOUËT-BOIGNY (INP-HB), BP 1093 Yamoussoukro, Côte d'Ivoire.
*Author to whom correspondence should be addressed.
Abstract
This study focuses on the treatment of real textile effluents from Côte d’Ivoire. These effluents, heavily loaded with dyes and refractory organic compounds, pose major risks to human health, biodiversity, and soil quality when discharged untreated. The objective is to assess the efficiency of the homogeneous Fenton advanced oxidation process in improving water quality prior to discharge. This process relies on the generation of hydroxyl radicals (•OH) through the reaction between hydrogen peroxide (H₂O₂) and ferrous ions (Fe²⁺) in an acidic medium, enabling the degradation of complex organic pollutants. Laboratory tests were conducted on raw effluent samples, with pH adjusted to 3–4 and varying reagent concentrations to optimize performance. Results show a significant reduction in physicochemical parameters: BOD₅ (−83%), COD (−53%), and turbidity (−96.7%), along with complete decolorization of the effluents. After treatment, the obtained values comply with Ivorian discharge standards, confirming the effectiveness of the process for depolluting textile wastewater. However, pH adjustment is required before discharge. This study demonstrates that the homogeneous Fenton method is a high-performance and adaptable solution for treating industrial effluents that are difficult to biodegrade, thereby contributing to the protection of water resources and reducing environmental impacts.
Keywords: Textile effluents, advanced oxidation, homogeneous Fenton, depollution, organic polluant, Côte d’Ivoire