Treatment of domestic wastewater phosphate by electrocoagulation using Fe and Al electrodes: A comparative study

Abstract In this work, phosphorus removal from domestic wastewater was studied through electrocoagulation (EC) using iron (Fe) and aluminium (Al) anodes in a batch EC reactor. Key parameters investigated include; initial pH, initial phosphorus concentration (Ci), reaction time, current density (j), metal-to-phosphorous ratio, charge loading (q) and electrode type. The Al/P mole ratio at current densities of 10, 20, 30 and 40 A/m2 was obtained as 0.84, 1.68, 0.95 and 0.77, respectively, while the Fe/P mole ratio for these current densities was calculated as 1.81, 3.29, 4.09 and 4.48, respectively. The optimums to obtain