Analyzing the removal of lead from synthesis wastewater by electrocoagulation technique using experimental design

Abstract

The electrocoagulation treatment of wastewater is the best applicable method to remove lead from the aqueous solutions using aluminium electrodes. The aim of the present study is to investigate the effect of the operational parameter son the efficiency of lead removal from synthesis wastewater using an experimental design. Applied current (0.5–2.5) Amps., pH (2–12), stirring speed (0–300) rpm, electrolytic time(5–60) min, and the initial concentration of lead (10–300) ppm were tested to establish the mathematical correlations of the removal efficiency and the energy consumption using a central composite design rotatable and uniform. The results showed clearly the variation of the output responses values according to the values of the operational variables. The optimum values of the operational variables were evaluated for each value of the designed removal efficiency as well as the values of energy consumption measured consequently.