info:eu-repo/semantics/article
Combined electrocoagulation and electro-oxidation of industrial textile wastewater treatment in a continuous multi-stage reactor
Fecha
2017-11-01Registro en:
02731223
19969732
WOS;000415638000026
PUBMED;29144309
SCOPUS;2-s2.0-85034637938
10.2166/wst.2017.415
Autor
GilPavas
E.
Arbeláez-Castaño
P.
Medina
J.
Acosta
D.A.
Institución
Resumen
A combined electrocoagulation (EC) and electrochemical oxidation (EO) industrial textile wastewater treatment potential is evaluated in this work. A fractional factorial design of experiment showed that EC current density, followed by pH, were the most significant factors. Conductivity and number of electrooxidation cells did not affect chemical oxygen demand degradation (DCOD). Aluminum and iron anodes performed similarly as sacrificial anodes. Current density, pH and conductivity were chosen for a Box-Behnken design of experiment to determine optimal conditions to achieve a high DCOD minimizing operating cost (OC). The optimum to achieve a 70% DCOD with an OC of USD 1.47/m(3) was: pH of 4, a conductivity of 3.7 mS/cm and a current density of 4.1 mA/cm(2). This study also shows the applicability of a combined EC/EO treatment process of a real complex industrial wastewater.