Research Article
Comparative Efficiency of Coagulation-Flocculation and Electrocoagulation for Turbidity Removal in Surface Water Treatment: A Case Study of the Ayédjoko Dam, Benin
Issue:
Volume 13, Issue 5, October 2025
Pages:
129-138
Received:
9 August 2025
Accepted:
18 August 2025
Published:
2 September 2025
DOI:
10.11648/j.ajac.20251305.11
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Abstract: This study provides a comparative assessment of conventional chemical coagulation-flocculation and electrocoagulation processes for the treatment of surface water from the Ayédjoko Dam, Benin. Response surface methodology (RSM) with a centered composite design (CCD) was employed to optimize operational parameters and maximize turbidity removal. The chemical coagulation-flocculation process using aluminum sulfate achieved a maximum turbidity reduction of 92.06%, while the electrocoagulation process with aluminum electrodes reached 98.23% under optimal conditions. Analyses of pH, coagulant dosage, and applied current demonstrated their strong influence on treatment performance and water quality improvements. Both processes were effective; however, electrocoagulation showed clear advantages by reducing chemical consumption and sludge generation, while maintaining compliance with local water quality standards. These benefits underscore its potential as a sustainable alternative for water treatment, particularly in resource-limited contexts. The findings not only confirm the feasibility of electrocoagulation but also highlight its suitability for integration into decentralized water treatment systems. Furthermore, the study emphasizes the importance of optimizing key parameters to enhance treatment efficiency and minimize environmental impacts. Overall, this research contributes to the growing body of evidence supporting electrocoagulation as a viable, cost-effective, and environmentally friendly technology for surface water treatment. It also provides practical insights for policymakers and water managers seeking to develop sustainable strategies for improved access to safe water in developing countries.
Abstract: This study provides a comparative assessment of conventional chemical coagulation-flocculation and electrocoagulation processes for the treatment of surface water from the Ayédjoko Dam, Benin. Response surface methodology (RSM) with a centered composite design (CCD) was employed to optimize operational parameters and maximize turbidity removal. The...
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,
Guercia-Divine Mabika-Soka
