Nashrieh Shimi va Mohandesi Shimi Iran

Nashrieh Shimi va Mohandesi Shimi Iran

Nitrate Removal from Drinking Water by Electrocoagulation

Document Type : Research Article

Authors
Sina Sorayyaei
Seyed Nezameddin Ashrafizadeh
Department of Chemical Engineering, Iran University of Science and Technology, Tehran, IRAN.
Abstract
Nitrate is one of the most important water pollutions that affect human life. Electrocoagulation is a common method for removing nitrate from water. In this research, using Design expert software and the CCD method, 48 experiments were performed in different parameters, including initial nitrate concentration in the range of 10-30 mg/L, 5-11 for pH, 2-10 cm for electrode distance, 5-30 V for voltage, and 20-120 min for process time. The electrodes were made of aluminum (anode) and iron (cathode), and the reactor volume was 2 liters. The highest nitrate removal was obtained in Ci = 16 mg/L, PH = 9.3, ED = 4 Cm, V = 23 v, ET = 90 min, reached . Then, the effect of sodium chloride salt, mechanical stirrer, and the number of electrodes was investigated in optimal points.
Keywords
Water purification
Nitarte
Electrocoagulation
Electrode

Subjects

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