Effects of Initial pH and Current Density on the Phosphate Removal from Source Separated Urine by Electrocoagulation Using Iron Plate Electrodes

Aim of this study was to investigate the effects of initial pH and current density on phosphate removal from source separated urine by electrocoagulation using iron electrodes. Results show that while the initial pH was at 6 and the current density was 50 mA/cm², nearly 100% of phosphate could be removed from urine after being electrolyzed for 15 minutes under the operation conditions as the gap between the electrodes was 5 mm and the ratio of electrode area to solution volume was 160 cm²/L, and the energy consumption for the removal of 1 kg phosphate was 3.2 kJ. Conclusions can be made that electrocoagulation is a promising method to remove phosphate from source separated urine, which has the characteristics of high efficiency, stability and convenience.