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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2008, Vol. 9 Issue (1): 118-124    DOI: 10.1631/jzus.A071313
Environmental Engineering     
Kinetics of 2,4-dichlorophenol dechlorination by Pd-Fe bimetallic nanoparticles in the presence of humic acid
Zhen ZHANG, Jing-jing WO, Naman CISSOKO, Xin-hua XU
Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China; School of Bioscience, Taizhou University, Linhai 317000, China
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Abstract  The remediation of groundwater which contains chlorinated organic compounds (COCs) by nanoscale bimetallic catalysts has received increasing interest in recent years. This report presents the dechlorination of 2,4-dichlorophenol (2,4-DCP) by Pd-Fe bimetallic nanoparticles in the presence of humic acid (HA) to investigate the feasibility of using Pd-Fe for the in situ remediation of contaminated groundwater. Our experimental results indicated that HA had an adverse effect on the dechlorination of 2,4-DCP by Pd-Fe nanoparticles. The rate constant k values of 2,4-DCP dechlorination were 0.017, 0.013, 0.009, 0.006 and 0.004 min−1 for HA concentrations of 0, 5, 10, 15 and 20 mg/L, respectively. The relationship between HA dosage and k values can be described as a linear model.

Key words： 2,4-dichlorophenol (2,4-DCP)      Dechlorination      Pd-Fe bimetallic nanoparticles      Humic acid (HA)     
Received: 13 June 2007      Published: 21 November 2007
CLC:  X52  
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Zhen ZHANG
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Xin-hua XU
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Zhen ZHANG, Jing-jing WO, Naman CISSOKO, Xin-hua XU. Kinetics of 2,4-dichlorophenol dechlorination by Pd-Fe bimetallic nanoparticles in the presence of humic acid. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2008, 9(1): 118-124.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A071313     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2008/V9/I1/118

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