화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.82, 105-112, February, 2020
DOI10.1016/j.jiec.2019.10.001  Export Citation
Removal of nitrates from water by electrocoagulation using a cell with horizontally oriented Al serpentine tube anode
M.H. Abdel-Aziz1, 2, †, E-S.Z. El-Ashtoukhy2, M. Sh. Zoromba1, 3, M. Bassyouni4, 5, and G.H. Sedahmed2
  • 1Chemical and Materials Engineering Department, King Abdulaziz University, Rabigh, Saudi Arabia
  • 2Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt
  • 3epartment of Chemistry, Faculty of Science, Port Said University, Port Said, Egypt
  • 4Department of Chemical Engineering, Faculty of Engineering Port Said University, Port Fouad, Egypt
  • 5Materials Science Program, Zewail City of Science and Technology, University of Science and Technology, October Gardens, 6th of October, Giza, 12578, Egypt
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In this work, removal of nitrates by electrocoagulation in a batch electrochemical cell with horizontally oriented electrodes was studied, the anode was a horizontal Al serpentine tube whose inner surface can potentially act as a built-in cooler to control the cell temperature, a H2 evolving Al plate cathode was placed beneath the anode at the cell bottom where the stirring action of H2 bubbles improve the mixing conditions at the anode. The effect of operating parameters, such as initial NO-3 concentration, initial pH of the solution, applied current density, and NaCl concentration on the removal efficiency was investigated. The electrical energy consumption of the cell was calculated at different operating parameters in order to optimize the operating conditions. The removal efficiency of the cell reached 100% after 100 min. A kinetic model for the process was proposed and verified by the experimental data. The merits of the present new cell which is self-stirred and contains a built-in heat transfer facility for temperature control were highlighted. Importance of the present work for agriculture drainage water and underground water remediation was pointed out.
Keywords:Nitrate removal;Electrocoagulation;Wastewater;Kinetic study;Serpentine tube anode
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