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. 2021 Jul;28(26):34473-34488.
doi: 10.1007/s11356-021-12855-4. Epub 2021 Mar 2.

Treatment of slaughterhouse wastewater by electrocoagulation and electroflotation as a combined process: process optimization through response surface methodology

Ceyhun Akarsu  1 , Ece Ümmü Deveci  2 , Çağdaş Gönen  2 , Özgecan Madenli  2
Affiliations

Treatment of slaughterhouse wastewater by electrocoagulation and electroflotation as a combined process: process optimization through response surface methodology

Ceyhun Akarsu et al. Environ Sci Pollut Res Int. 2021 Jul.

Abstract

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.

Keywords: Electrocoagulation; Electroflotation; Nitrogen removal; Organic matter removal; Phosphate removal; Response surface method; Slaughterhouse wastewater.

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