Trichloroethylene Dechlorination by Copper-contained Zero-valent Iron Slurry

doi:10.1007/s40242-013-3165-9

Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (6): 1173-1179.doi: 10.1007/s40242-013-3165-9

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Trichloroethylene Dechlorination by Copper-contained Zero-valent Iron Slurry

LI Hai-jun¹, QIU Hua¹, ZHANG Lan-ying¹, LIU Na¹, ZHU Bo-lin²

1. Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, P. R. China;
2. Liaoyang Environmental Inspection Office, Liaoyang 111000, P. R. China

Received:2013-04-10 Revised:2013-07-15 Online:2013-12-01 Published:2013-08-21
Contact: LIU Na E-mail:liuna@jlu.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(Nos.41072170, 41372236).

Abstract

Abstract:

Zero valent iron technology has been widely used for treating contaminated wastewater these years. However, it always results in inefficiency in the processes of drying and storage due to oxidation and passivation. This could be avoided by in situ synthesized zero valent iron slurry in an emergency if it possesses the same performance as zero valent iron. In this study, iron slurry was synthesized and directly used for dechlorinating trichloroethylene to measure its degradation efficiencies and properties. Results show that 2%(mass ratio) copper-contained zero-valent iron slurry exhibits the optimal performance compared with the other iron slurries. Batch experiments indicate that factors such as the concentration of trichloroethylene, pH, dissolved oxygen and equilibrium to a certain extent affect the reduction of trichloroethylene by 2%(mass ratio) copper-contained zero-valent iron slurry. Persistent, high-efficiency degradation performance could last 7 cycles. These demonstrate that the application of copper-contained zero-valent iron slurry in treating trichloroethylene-contained wastewater is realistic.

Key words: Zero valent iron, Copper-contained zero-valent iron slurry, Trichloroethylene, Dechlorination

LI Hai-jun, QIU Hua, ZHANG Lan-ying, LIU Na, ZHU Bo-lin. Trichloroethylene Dechlorination by Copper-contained Zero-valent Iron Slurry[J]. Chemical Research in Chinese Universities, 2013, 29(6): 1173-1179.

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Trichloroethylene Dechlorination by Copper-contained Zero-valent Iron Slurry

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