A Systematic Study and Statistical Inferences on Electrocoagulation Design Parameters with Reference to Arsenic Removal

Effects of three electrocoagulation design factors such as current density (i=I/A), electrode area to volume ratio (r=A/V), and charge density (q=I*t/V) are investigated for arsenic removal from synthetic groundwater by electrocoagulation. Two-level four-factor full-factorial-designed experiment is used to arrive at the conclusion of the factors’ effect. Statistical inferences are drawn on the three factors and found that current density is not a significant factor if the factor is studied by varying the electrode area keeping current strength constant. Similarly, electrode area to volume ratio (r=A/V) is not significant if the factor is studied by varying the electrode area. The study showed that charge density (q=I*t/V) is the significant factor in arsenic removal. Effects of current density (i) and area to volume ratio (r) should be studied in such a way that during the study, charge density (q) is not varied.