Effects of Operating Parameters on the Removal Performance of Ammonia Nitrogen by Electrodialysis 


Vol. 17,  No. 4, pp. 363-369, Dec.  2011


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  Abstract

To evaluate the feasibility of electrodialysis for ammonia nitrogen removal from wastewater, the effects of operating parameters such as diluate concentration, applied voltage and flow rate on the removal of ammonia nitrogen were experimentally estimated. The removal rate was evaluated by measuring the elapsed time for ammonia nitrogen concentration of diluate to reach 20 mg/L. Limiting current density (LCD) linearly increased with ammonia nitrogen concentration and flow rate. The elapsed time was linearly proportional to initial concentration of diluate. Due to relatively large equivalent ion conductivity and ion mobility of ammonia nitrogen, the removal rate increased consistently with flow rate. Increase in the applied voltage gave positive effect to removal rate. From the operation of the electrodialysis module used in this research, the flow rate of 3.2 L/min and 80~90% of applied voltage for LCD are recommended as the optimum operating condition for the removal from high concentrate ammonia nitrogen solution.

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  Cite this article

[IEEE Style]

Y. T, L. G, J. B, H. Y, S. N, "Effects of Operating Parameters on the Removal Performance of Ammonia Nitrogen by Electrodialysis," Clean Technology, vol. 17, no. 4, pp. 363-369, 2011. DOI: .

[ACM Style]

Yoon T, Lee G, Jung B, Han Y, and Sung N. 2011. Effects of Operating Parameters on the Removal Performance of Ammonia Nitrogen by Electrodialysis. Clean Technology, 17, 4, (2011), 363-369. DOI: .

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