Dechlorination of pentachlorophenol using nanoscale Fe/Ni particles: Role of nano-Ni and its size effect

Cheng, Rong; Zhou, Wei; Wang, Jianlong; Qi, Daoduo; Guo, Lin; Zhang, Wei‐xian; Qian, Yi

doi:10.1016/j.jhazmat.2010.03.068

Cited by 84 publications

(34 citation statements)

References 44 publications

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“…Chlorinated compounds were also adsorbed on the surface of Ni/Fe particles where the C-Cl bond was broken, and the chlorine atom was replaced by hydrogen. It is consistent with the research of Han et al [17] and Cheng et al [18]. The chemical process can be represented as follows:…”

supporting

confidence: 89%

Catalytic dechlorination of2,4-dichlorophenol by Ni/Fe nanoparticles in the presence of humic acid: intermediate products and some experimental parameters

Zhang

Baig

et al. 2012

Journal of Experimental Nanoscience

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The catalytic dechlorination of 2,4-dichlorophenol (2,4-DCP) by Ni/Fe bimetallic nanoparticles in the presence of humic acid (HA) was investigated in order to understand their applicability for in situ remediation of groundwater. 2,4-DCP was catalytically dechlorinated to form the final products -phenol (P) via two intermediates, o-chlorophenol (o-CP) and p-chlorophenol (p-CP). It was demonstrated that the carbon mass balances during the dechlorination were between 84% and 92%, and other carbons were adsorbed on the surface of Ni/Fe bimetallic nanoparticles. The experimental results suggest that HA competed for reaction sites on the Ni/Fe bimetallic nanoparticles with 2,4-DCP, and thus reduced the efficiency and rate of the dechlorination of 2,4-DCP. The catalytic degradation slowed down as the increase of HA in solution, and when HA's concentrations were 0, 10, 20 and 30 mg L À1, the maximum concentrations of o-CP were 0.025, 0.041, 0.039 and 0.034 mM in 10, 30, 30 and 30 min, respectively. High Ni content, low initial pH value, high Ni/Fe nanoparticles' dosage and high temperature favoured the catalytic dechlorination of 2,4-DCP. The experimental results show that no other intermediates were generated besides Cl À , o-CP, p-CP and P during the catalytic dechlorination of 2,4-DCP.

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confidence: 89%

Catalytic dechlorination of2,4-dichlorophenol by Ni/Fe nanoparticles in the presence of humic acid: intermediate products and some experimental parameters

Zhang

Baig

et al. 2012

Journal of Experimental Nanoscience

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“…2 subsequently molecular hydrogen at lower solution pH [16,20]. The Fe 0 and H 2 will react with PCP as reducing agents according to the following reactions [29]:…”

Section: Effect Of Solution Phmentioning

confidence: 99%

Simultaneous adsorption and dechlorination of pentachlorophenol from effluent by Ni–ZVI magnetic biochar composites synthesized from paper mill sludge

Devi

Saroha

2015

Chemical Engineering Journal

148

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“…When the dosage of NZVI was 0.5 mM, the removal efficiency was 2.4 log and 4.1 log after 60-min reaction in the anaerobic and aerobic system, respectively. As far as the removal efficiency is concerned, the adsorption effect of NZVI can make a certain contribution due to its high specific surface and high surface reactivity (Nurmi et al, 2005;Cheng et al, 2010). Apart from the role of NZVI alone in the systems, it may involve generation of various by-products through the oxidation of NZVI.…”

Section: Bacteriophage F2 Removal By Nzvi Under Anaerobic/aerobic Conmentioning

confidence: 99%

The mechanism for bacteriophage f2 removal by nanoscale zero-valent iron

Cheng

Shi

et al. 2016

Water Research

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Dechlorination of pentachlorophenol using nanoscale Fe/Ni particles: Role of nano-Ni and its size effect

Cited by 84 publications

References 44 publications

Catalytic dechlorination of2,4-dichlorophenol by Ni/Fe nanoparticles in the presence of humic acid: intermediate products and some experimental parameters

Catalytic dechlorination of2,4-dichlorophenol by Ni/Fe nanoparticles in the presence of humic acid: intermediate products and some experimental parameters

Simultaneous adsorption and dechlorination of pentachlorophenol from effluent by Ni–ZVI magnetic biochar composites synthesized from paper mill sludge

The mechanism for bacteriophage f2 removal by nanoscale zero-valent iron

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