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Treatment of Industrial Wastewater Containing Phenol Using the Electro-Fenton Technique in Gas Sparged Cell
Current Issue
Volume 2, 2015
Issue 5 (September)
Pages: 47-59   |   Vol. 2, No. 5, September 2015   |   Follow on         
Paper in PDF Downloads: 109   Since Sep. 16, 2015 Views: 2199   Since Sep. 16, 2015
A. Abdelaziz, Chemical Engineering Department, Alexandria University, Alexandria, Egypt.
A. A. Mubarak, Chemical Engineering Department, Alexandria University, Alexandria, Egypt.
S. A. Nosier, Chemical Engineering Department, Alexandria University, Alexandria, Egypt.
M. Hussien, Chemical Engineering Department, Alexandria University, Alexandria, Egypt.
The present study is concerned with evaluating the performance of Electro-Fenton process using iron electrodes as an alternative wastewater treatment technique. In this method, hydrogen peroxide is externally added into the system while a sacrificial iron anode is used as Fe+2 source so Fenton reaction was formed in the reactor. The batch reactor was stirred by introducing nitrogen gas through G4 type sintered glass and a synthetic solution of phenol was used to simulate wastewater. The effect of various process parameters such as: pH, gas superficial velocity, current density, H2O2 concentration, initial phenol concentration, and NaCl concentration on the electro-Fenton reaction was investigated to achieve maximum degradation efficiency. The batch experimental results revealed that the overall COD reduction reached 97% for initial phenol concentration 50 mg/l. The optimum pH, superficial gas velocity, current density was 3, 1.18 cm/s, 1.7 mA/cm2 and H2O2 concentration was 1500 mg/l, respectively. The kinetic study revealed that the rate of COD reduction followed a pseudo first order reaction. Energy consumption and iron electrode consumption were calculated per gram of COD removed.
Electro-Fenton, Phenol, Wastewater, Iron Electrode, Gas Sparged Cell
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