3 mg/L at the later obtained optimum operating conditions.
Ahmadi et al. (2012) have tried the addition of H2O2 and
polyaluminum chloride in an electrocoagulation cell at different
concentrations and doses. Their results showed that
the oil and grease content was decreased from 11,781 to
4238 mg/L when the concentration of H2O2 and applied
current density were at 2% and 10 mA/cm2 respectively. On