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Journal of Zhejiang University SCIENCE A 2009 Vol.10 No.1 P.121~126


Dechlorination mechanism of 2,4-dichlorophenol by Ni/Fe nanoparticles in the presence of humic acid

Author(s):  Jing-jing WO, Zhen ZHANG, Xin-hua XU

Affiliation(s):  Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   xuxinhua@zju.edu.cn

Key Words:  Dechlorination, Ni/Fe nanoparticles, 2, 4-dichlorophenol (2, 4-DCP), Humic acid (HA)

Jing-jing WO, Zhen ZHANG, Xin-hua XU. Dechlorination mechanism of 2,4-dichlorophenol by Ni/Fe nanoparticles in the presence of humic acid[J]. Journal of Zhejiang University Science A, 2009, 10(1): 121~126.

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author="Jing-jing WO, Zhen ZHANG, Xin-hua XU",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

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%T Dechlorination mechanism of 2,4-dichlorophenol by Ni/Fe nanoparticles in the presence of humic acid
%A Jing-jing WO
%A Xin-hua XU
%J Journal of Zhejiang University SCIENCE A
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%D 2009
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0820277

T1 - Dechlorination mechanism of 2,4-dichlorophenol by Ni/Fe nanoparticles in the presence of humic acid
A1 - Jing-jing WO
A1 - Zhen ZHANG
A1 - Xin-hua XU
J0 - Journal of Zhejiang University Science A
VL - 10
IS - 1
SP - 121
EP - 126
%@ 1673-565X
Y1 - 2009
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A0820277

To understand the feasibility of its application to the in situ remediation of contaminated groundwater, the 28dechlorination%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>2f4a8b>dechlorination of 2,4-dichlorophenol (2,4-DCP) by 28ni/Fe nanoparticles%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>2f4a8b>ni/Fe nanoparticles in the presence of humic acid (HA) was investigated. We found that, as high performance liquid chromatography (HPLC) was used, the 2,4-DCP was first quickly reduced to o-chlorophenol (o-CP) and p-chlorophenol (p-CP), and then reduced to phenol as the final product. Our experimental results indicated that HA had an adverse effect on the 28dechlorination%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>2f4a8b>dechlorination of 2,4-DCP by 28ni/Fe nanoparticles%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>2f4a8b>ni/Fe nanoparticles, as the HA concentration increased, the removal rate decreased evidently. It also demonstrated that 2,4-DCP was reduced more easily to o-CP than to p-CP, and that the sequence of the tendency in 28dechlorination%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>2f4a8b>dechlorination of intermediates was p-CP>o-CP. Transmission electron microscope (TEM) showed that HA could act as an adsorbate to compete reactive sites on the surface of 28ni/Fe nanoparticles%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>2f4a8b>ni/Fe nanoparticles to decrease the 28dechlorination%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>2f4a8b>dechlorination rate. Also we concluded that the 28dechlorination%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>2f4a8b>dechlorination reaction of 2,4-DCP over 28ni/Fe nanoparticles%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>2f4a8b>ni/Fe nanoparticles progressed through catalytic reductive 28dechlorination%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>2f4a8b>dechlorination.

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