Contribution to the study of electrocoagulation mechanism in basic textile effluent

Zaina Zaroual (1) , Mohamed Azzi (1, 2) , Najib Saib (1) , Eric Chaînet (2)

1 Laboratoire d'électrochimie et chimie de l'environnement [Casablanca]
2 LEPMI - Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces

Electrocoagulation method with iron electrode is used to treat the industrial textile wastewater in batch reactor. The effects of operating parameters such as time and potential electrolysis on the decolourization and COD removal efficiency have been investigated. The results indicate that electrocoagulation is very efficient and able to achieve 100% colour and 84% COD removal in 3 min at potential 600 mV. The effluent wastewater is very clear and its quality exceed the direct discharge standard. Furthermore, the mechanism of electrocoagulation is elucidated by zeta potential measurement.

Mots clés: Electrocoagulation process; Textile wastewater; Chemical oxygen demand; Zeta potential

Domaines: Matériaux

Zaina Zaroual, Mohamed Azzi, Najib Saib, Eric Chaînet. Contribution to the study of electrocoagulation mechanism in basic textile effluent. Journal of Hazardous Materials, 2006, 131 (1-3), pp. 73-78. ⟨10.1016/j.jhazmat.2005.09.021⟩. ⟨hal-00333538⟩