PMID- 27745676 OWN - NLM STAT- MEDLINE DCOM- 20170216 LR - 20170906 IS - 1001-0742 (Print) IS - 1001-0742 (Linking) VI - 48 DP - 2016 Oct TI - Enhanced dechlorination of 2,4-dichlorophenol by recoverable Ni/Fe-Fe(3)O(4) nanocomposites. PG - 92-101 LID - S1001-0742(16)30041-9 [pii] LID - 10.1016/j.jes.2015.10.033 [doi] AB - Ni/Fe-Fe(3)O(4) nanocomposites were synthesized for dechlorination of 2,4-dichlorophenol (2,4-DCP). The effects of the Ni content in Ni/Fe-Fe(3)O(4) nanocomposites, solution pH, and common dissolved ions on the dechlorination efficiency were investigated, in addition to the reusability of the nanocomposites. The results showed that increasing content of Ni in Ni/Fe-Fe(3)O(4) nanocomposites, from 1 to 5wt.%, greatly increased the dechlorination efficiency; the Ni/Fe-Fe(3)O(4) nanocomposites had much higher dechlorination efficiency than bare Ni/Fe nanoparticles. Ni content of 5wt.% and initial pH below 6.0 was found to be the optimal conditions for the catalytic dechlorination of 2,4-DCP. Both 2,4-DCP and the intermediate product 2-chlorophenol (2-CP) were completely removed, and the concentration of the final product phenol was close to the theoretical phenol production from complete dechlorination of 20mg/L of 2,4-DCP, after 3hr reaction at initial pH value of 6.0, 3g/L Ni/Fe-Fe(3)O(4), 5wt.% Ni content in the composite, and temperature of 22 degrees C. 2,4-DCP dechlorination was enhanced by Cl(-) and inhibited by NO(3)(-) and SO(4)(2-). The nanocomposites were easily separated from the solution by an applied magnetic field. When the catalyst was reused, the removal efficiency of 2,4-DCP was almost 100% for the first seven uses, and gradually decreased to 75% in cycles 8-10. Therefore, the Ni/Fe-Fe(3)O(4) nanocomposites can be considered as a potentially effective tool for remediation of pollution by 2,4-DCP. CI - Copyright (c) 2016. Published by Elsevier B.V. FAU - Xu, Cancan AU - Xu C AD - Zhejiang Provincial Key Laboratory of Water Science and Technology, Department of Environment, Yangtze Delta Region Institute of Tsinghua University, Zhejiang, Jiaxing 314006, China. Electronic address: xucancan523127@163.com. FAU - Liu, Rui AU - Liu R AD - Zhejiang Provincial Key Laboratory of Water Science and Technology, Department of Environment, Yangtze Delta Region Institute of Tsinghua University, Zhejiang, Jiaxing 314006, China. Electronic address: liuruitsinghuazj@gmail.com. FAU - Chen, Lvjun AU - Chen L AD - Zhejiang Provincial Key Laboratory of Water Science and Technology, Department of Environment, Yangtze Delta Region Institute of Tsinghua University, Zhejiang, Jiaxing 314006, China; School of Environment, Tsinghua University, Beijing 100084, China. Electronic address: chenlj@tsinghua.edu.cn. FAU - Tang, Jialu AU - Tang J AD - Zhejiang Provincial Key Laboratory of Water Science and Technology, Department of Environment, Yangtze Delta Region Institute of Tsinghua University, Zhejiang, Jiaxing 314006, China. LA - eng PT - Journal Article DEP - 20160325 PL - Netherlands TA - J Environ Sci (China) JT - Journal of environmental sciences (China) JID - 100967627 RN - 0 (Chlorophenols) RN - 0 (Ferrous Compounds) RN - 0 (Water Pollutants, Chemical) RN - 7OV03QG267 (Nickel) RN - G7036X8B5H (ferrous oxide) RN - R669TG1950 (2,4-dichlorophenol) SB - IM MH - Chlorophenols/*chemistry MH - Environmental Restoration and Remediation/*methods MH - Ferrous Compounds/*chemistry MH - Halogenation MH - Nanocomposites/*chemistry MH - Nickel/*chemistry MH - Waste Disposal, Fluid/methods MH - Water Pollutants, Chemical/*chemistry OTO - NOTNLM OT - 2,4-Dichlorophenol OT - Catalytic dechlorination OT - Common dissolved ions OT - Ni/Fe-Fe(3)O(4) nanocomposites OT - Recoverable EDAT- 2016/10/18 06:00 MHDA- 2017/02/17 06:00 CRDT- 2016/10/18 06:00 PHST- 2015/04/17 00:00 [received] PHST- 2015/10/09 00:00 [revised] PHST- 2015/10/21 00:00 [accepted] PHST- 2016/10/18 06:00 [entrez] PHST- 2016/10/18 06:00 [pubmed] PHST- 2017/02/17 06:00 [medline] AID - S1001-0742(16)30041-9 [pii] AID - 10.1016/j.jes.2015.10.033 [doi] PST - ppublish SO - J Environ Sci (China). 2016 Oct;48:92-101. doi: 10.1016/j.jes.2015.10.033. Epub 2016 Mar 25.