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Current Topics in Electrochemistry   Volumes    Volume 22 
Purification of grey water by electrocoagulation process using iron electrodes
Mazen S. Hamada
Pages: 27 - 35
Number of pages: 9
Current Topics in Electrochemistry
Volume 22 

Copyright © 2020 Research Trends. All rights reserved

In this study electrocoagulation is proved to be a suitable technology to purify grey water to meet the standards of water for irrigation purposes. The efficiency of electrocoagulation to remove total hardness, calcium, magnesium, nitrate, chemical oxygen demand (COD) and total dissolved substances (TDS) from grey water, under the influence of operating parameters including initial pH, time, current density, electrode inter-distance and temperature, was investigated. Electrocoagulation was performed in batch reactors employing iron (Fe) electrodes. The optimal removal conditions were proposed to be at pH = 11, time 60 min, temperature 25 °C, current density 120 mA/cm2 and electrode inter-distance 1 cm. The highest magnesium, calcium and total hardness removal efficiencies were about 92.3%, 87.5% and 89%, respectively, while the highest removal efficiency of nitrates was obtained at pH 7 and reached about 76%, and that for COD was 80.0% at pH 4.
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