Treatment of slaughterhouse wastewater by electrocoagulation and electroflotation as a combined process: process optimization through response surface methodology
2021
Akarsu, Ceyhun | Deveci, Ece Ümmü | Gönen, Çağdaş | Madenli, Özgecan
The contamination of water with organic compounds has become an increasing concern in today’s world. The cost-effective and sustainable treatment of industrial wastewaters is a major challenge. Advanced treatment techniques such as electrocoagulation–electroflotation offer economic and reliable solutions for the treatment of industrial wastewater. In this study, the electrocoagulation–electroflotation method was investigated for the simultaneous removal of chemical oxygen demand, total phosphorus, total Kjeldahl nitrogen, and color via response surface methodology. Factors such as electrode combination (Fe and Al), current density (10–20 mA/cm²), pH (3.0–9.0), and electrode distance (1–3 cm) were investigated in the treatment of wastewater to obtain maximum treatment efficiency. It was determined that chemical oxygen demand, total Kjeldahl nitrogen, total phosphorus, and color removal reached up to 94.0%, 77.5%, 97.0%, and 99.0%, respectively. Treatment costs were found as $0.71 with the Al-Fe electrode combination.
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