The Kinetics for Electrochemical Removal of Ammonia in Coking Wastewater

›› 2011, Vol. 19 ›› Issue (4): 570-574.

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The Kinetics for Electrochemical Removal of Ammonia in Coking Wastewater

LIANG Zhenhai, LI Su, GUO Wenqian, FAN Caimei

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Received:2010-10-11 Revised:2011-05-20 Online:2011-08-28 Published:2011-08-28
Supported by:
Supported by the National Natural Science Foundation of China(20771080,20876104).

The Kinetics for Electrochemical Removal of Ammonia in Coking Wastewater

梁镇海, 李素, 郭文倩, 樊彩梅

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

通讯作者: LIANG Zhenhai,E-mail:liangzhenhai@tyut.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China(20771080,20876104).

Abstract

Abstract: Electrochemical removal of ammonia is a new and effective method in coking wastewater.The reaction mechanism of ammonia removal was proved by stable polarization curve in this paper.First, the supposing of reaction steps of the electrode were proposed.And then reaction parameter of the electrode was measured by Tafel curve.Finally, the reaction mechanism was determined by quasi-equilibrium approach.The results showed that Cl₂+H₂O→HOCl+H⁺+Cl^- was the rate-determining step, the calculated apparent transfer coefficient was uniform to the experimental value.

Key words: removal of ammonia, electrochemistry, coking wastewater, quasi-equilibrium approach, rate-determining step

摘要： Electrochemical removal of ammonia is a new and effective method in coking wastewater.The reaction mechanism of ammonia removal was proved by stable polarization curve in this paper.First, the supposing of reaction steps of the electrode were proposed.And then reaction parameter of the electrode was measured by Tafel curve.Finally, the reaction mechanism was determined by quasi-equilibrium approach.The results showed that Cl₂+H₂O→HOCl+H⁺+Cl^- was the rate-determining step, the calculated apparent transfer coefficient was uniform to the experimental value.

关键词: removal of ammonia, electrochemistry, coking wastewater, quasi-equilibrium approach, rate-determining step

LIANG Zhenhai, LI Su, GUO Wenqian, FAN Caimei. The Kinetics for Electrochemical Removal of Ammonia in Coking Wastewater [J]. , 2011, 19(4): 570-574.

梁镇海, 李素, 郭文倩, 樊彩梅. The Kinetics for Electrochemical Removal of Ammonia in Coking Wastewater [J]. , 2011, 19(4): 570-574.

References

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The Kinetics for Electrochemical Removal of Ammonia in Coking Wastewater

The Kinetics for Electrochemical Removal of Ammonia in Coking Wastewater

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