PMID- 29674147
OWN - NLM
STAT- MEDLINE
DCOM- 20180814
LR  - 20221207
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 204
DP  - 2018 Aug
TI  - Degradation of 2, 4-dichlorophenol in aqueous solution by dielectric barrier 
      discharge: Effects of plasma-working gases, degradation pathways and toxicity 
      assessment.
PG  - 351-358
LID - S0045-6535(18)30694-5 [pii]
LID - 10.1016/j.chemosphere.2018.04.052 [doi]
AB  - Chlorinated phenols are a class of contaminants found in water and have been 
      regarded as a great potential risk to environment and human health. It is thus 
      urgent to develop effective techniques to remove chlorinated phenols in 
      wastewater. For this purpose, we employed dielectric barrier discharge (DBD) in 
      this work and studied the efficiency of DBD for the degradation of 
      2,4-dichlorophenol (2,4-DCP), one of the most typical chlorophenols in the 
      environment. The effects of pH value, applied voltage and plasma-working gases on 
      the dichlorophenol-removal efficiency were investigated. The results demonstrate 
      that DBD plasma could successfully degrade 2,4-DCP, achieving efficiency of 
      98.16% (k = 1.09 min(-1)) in the Ar-DBD system, and 77.60% (k = 0.48 min(-1)) in 
      the N(2)-DBD system, with the process following the first-order kinetics. The 
      removal efficiency was reduced in the presence of radical scavengers, confirming 
      that hydroxyl radicals played a key role in the degradation process, while other 
      active substances were also found such as nitrogen radicals in the N(2)-DBD 
      system, which was found to have also contribution to the degradation of 2,4-DCP. 
      The intermediates and final products generated in the degradation process were 
      analyzed using gas chromatography-mass spectrometry (GC-MS). Based on the 
      identification of intermediates, the degradation pathways and mechanism were 
      proposed and discussed. Besides, the toxicity of the DBD treated 2,4-DCP solution 
      was also assessed using GFP-expressing recombinant Escherichia coli (E. coli) as 
      the testing organism, showing that plasma treatment could substantially reduce 
      the toxic effect of 2,4-DCP.
CI  - Copyright (c) 2018 Elsevier Ltd. All rights reserved.
FAU - Zhang, Hong
AU  - Zhang H
AD  - Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of 
      Technical Biology and Agriculture Engineering, Hefei Institutes of Physical 
      Science, Chinese Academy of Sciences, Hefei, China; Key Laboratory of 
      Environmental Toxicology and Pollution Control Technology of Anhui Province, 
      Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.
FAU - Zhang, Qifu
AU  - Zhang Q
AD  - Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of 
      Technical Biology and Agriculture Engineering, Hefei Institutes of Physical 
      Science, Chinese Academy of Sciences, Hefei, China; Department of Modern 
      Mechanics and School of Life Science, University of Science & Technology of 
      China, Hefei, China.
FAU - Miao, Chunguang
AU  - Miao C
AD  - Department of Modern Mechanics and School of Life Science, University of Science 
      & Technology of China, Hefei, China.
FAU - Huang, Qing
AU  - Huang Q
AD  - Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Institute of 
      Technical Biology and Agriculture Engineering, Hefei Institutes of Physical 
      Science, Chinese Academy of Sciences, Hefei, China; Key Laboratory of 
      Environmental Toxicology and Pollution Control Technology of Anhui Province, 
      Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China; 
      Department of Modern Mechanics and School of Life Science, University of Science 
      & Technology of China, Hefei, China. Electronic address: huangq@ipp.ac.cn.
LA  - eng
PT  - Journal Article
DEP - 20180411
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Chlorophenols)
RN  - 0 (Plasma Gases)
RN  - 0 (Waste Water)
RN  - 0 (Water Pollutants, Chemical)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Chlorophenols/*isolation & purification/toxicity
MH  - Escherichia coli/*drug effects
MH  - Plasma Gases/*chemistry
MH  - Wastewater/*chemistry
MH  - Water Pollutants, Chemical/*isolation & purification/toxicity
MH  - Water Purification/*methods
OTO - NOTNLM
OT  - 2,4-Dichlorophenol
OT  - Advanced oxidation processes (AOPs)
OT  - Dielectric barrier discharge (DBD)
OT  - Inert gas
OT  - Nitrogen and oxygen gases
OT  - Non-thermal plasma
EDAT- 2018/04/21 06:00
MHDA- 2018/08/15 06:00
CRDT- 2018/04/21 06:00
PHST- 2017/12/10 00:00 [received]
PHST- 2018/03/08 00:00 [revised]
PHST- 2018/04/10 00:00 [accepted]
PHST- 2018/04/21 06:00 [pubmed]
PHST- 2018/08/15 06:00 [medline]
PHST- 2018/04/21 06:00 [entrez]
AID - S0045-6535(18)30694-5 [pii]
AID - 10.1016/j.chemosphere.2018.04.052 [doi]
PST - ppublish
SO  - Chemosphere. 2018 Aug;204:351-358. doi: 10.1016/j.chemosphere.2018.04.052. Epub 
      2018 Apr 11.