This study investigated the enhancement of synergetic degradation of Fe/Cu/C (Fe: commercial iron, Cu: solid product of Fe reacted with CuSO4, C: carbon powder) for simulated groundwater contaminated by trichloroethylene (TCE). Zero valent iron (ZVI) as a reducing agent was proved to be effective for TCE removal. The Fe/Cu/C system resulted in higher reduction efficiency as a result of the synergetic role of Fe/Cu and Fe/C microelectrode than the Fe (ZVI) or Fe/Cu system, and the half-life was only about 0.4 h. When m(Fe) achieved 12.5 g L–1, the residual concentration of TCE almost leveled off. Fe:Cu = 10:1 or m(C) = 0.0086 g can induce the optimum function for TCE degradation. A neutral condition was appropriate for TCE degradation, and an acidic system slightly favored TCE dechlorination compared with an alkaline system. GC/MS analysis indicated that TCE was dechlorinated to 1,1-dichloroethene (1,1-DCE), cis-1,2-dichloroethene (cis-DCE) and vinyl chloride (VC), and 1,1-DCE might be the precursor. Fe/Cu/C reduction is a highly promising technique for TCE removal, and it is an excellent alternative to enhance TCE reductive dechlorination.
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Research Article|
June 01 2012
Synergetic degradation of Fe/Cu/C for groundwater polluted by trichloroethylene
Wei Zhang;
1State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process / Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China
2School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
E-mail: wzhang@ecust.edu.cn
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Li Li;
Li Li
1State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process / Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China
2School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
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Kuangfei Lin;
1State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process / Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China
2School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
E-mail: kflin@ecust.edu.cn
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Bang Xiong;
Bang Xiong
1State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process / Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China
2School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
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Bingzhi Li;
Bingzhi Li
1State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process / Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China
2School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
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Shuguang Lu;
Shuguang Lu
1State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process / Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai 200237, China
2School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
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Meijin Guo;
Meijin Guo
3State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
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Xinhong Cui
Xinhong Cui
4Shanghai Institute of Landscape Gardening, Shanghai 200233, China
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Water Sci Technol (2012) 65 (12): 2258–2264.
Article history
Received:
December 16 2011
Accepted:
February 09 2012
Citation
Wei Zhang, Li Li, Kuangfei Lin, Bang Xiong, Bingzhi Li, Shuguang Lu, Meijin Guo, Xinhong Cui; Synergetic degradation of Fe/Cu/C for groundwater polluted by trichloroethylene. Water Sci Technol 1 June 2012; 65 (12): 2258–2264. doi: https://doi.org/10.2166/wst.2012.146
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