PMID- 31479958
OWN - NLM
STAT- MEDLINE
DCOM- 20200225
LR  - 20221207
IS  - 1873-6750 (Electronic)
IS  - 0160-4120 (Linking)
VI  - 132
DP  - 2019 Nov
TI  - Accelerated oxidation of 2,4,6-trichlorophenol in Cu(II)/H(2)O(2)/Cl(-) system: A 
      unique "halotolerant" Fenton-like process?
PG  - 105128
LID - S0160-4120(19)31645-9 [pii]
LID - 10.1016/j.envint.2019.105128 [doi]
AB  - The roles of chloride in enhanced oxidative degradation of refractory organic 
      pollutants are recently identified in the Cu(II)/H(2)O(2)/Cl(-) system, but the 
      identity of the reactive oxidants and potential conversion of inorganic chloride 
      to organochlorine in such oxidizing environment remain obscure. Here we report 
      that Cu(II)/H(2)O(2)/Cl(-) system is a unique "halotolerant" Fenton-like process 
      that works most efficiently in saline water among the five tested redox-active 
      metals ions (i.e. Cr(VI), Ce(III), Co(II), Mn(II) and Cu(II)). The observed 
      pseudo first-order rate constant for 2,4,6-trichlorophenol (TCP) degradation was 
      linearly correlated with the elevated Cl(-) content. The TCP degradation rate at 
      [Cl(-)](0) = 1000 mM by the Cu(II)/H(2)O(2) system was approximately 46-fold 
      higher than that at [Cl(-)](0) = 5 mM. The optimal mineralization rate of TCP and 
      percentage of absorbable organic halogens (AOX) decrease were 31.6% and 63.8%, 
      respectively, in the tested Cu(II)/H(2)O(2)/Cl(-) system. However, the detection 
      of fused chlorinated byproducts (i.e. chloro-anthracene-pentaol, dioxine, 
      chlorinated dibenzofuran) reminds us of cautiousness in evaluating the 
      applicability of Cu(II)-catalyzed Fenton-like reaction, particularly while it is 
      to be applied to the treatment of wastewater contaminated with chlorophenols. Two 
      independent models (i.e. "Cu(III) model" and "OH model") were developed to 
      describe the kinetics of Cu(II)/H(2)O(2)/Cl(-) system. The failure of "OH model" 
      to rationalize the observed AOX decay has disproved the "OH model" through 
      reductio ad absurdum. The ability of "Cu(III) model" to adequately explain the 
      experimental data demonstrates that Cu(III)-chloro complexes, rather than OH, is 
      the major product resulting from reactions between Cu(I)-chloro complexes and 
      H(2)O(2) at neutral pH.
CI  - Copyright (c) 2019 The Authors. Published by Elsevier Ltd.. All rights reserved.
FAU - Wang, Zhaohui
AU  - Wang Z
AD  - Shanghai Key Laboratory of Urbanization and Ecological Restoration, School of 
      Ecological and Environmental Sciences, East China Normal University, Shanghai 
      200241, China; College of Environmental Science and Engineering, Donghua 
      University, Shanghai 201620, China; Institute of Eco-Chongming (IEC), Shanghai 
      200062, China. Electronic address: zhwang@des.ecnu.edu.cn.
FAU - Liu, Qingze
AU  - Liu Q
AD  - College of Environmental Science and Engineering, Donghua University, Shanghai 
      201620, China.
FAU - Yang, Fei
AU  - Yang F
AD  - College of Environmental Science and Engineering, Donghua University, Shanghai 
      201620, China.
FAU - Huang, Ying
AU  - Huang Y
AD  - College of Environmental Science and Engineering, Donghua University, Shanghai 
      201620, China.
FAU - Xue, Ying
AU  - Xue Y
AD  - College of Environmental Science and Engineering, Donghua University, Shanghai 
      201620, China.
FAU - Yuan, Ruixia
AU  - Yuan R
AD  - Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry 
      and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China.
FAU - Sheng, Bo
AU  - Sheng B
AD  - College of Environmental Science and Engineering, Donghua University, Shanghai 
      201620, China.
FAU - Wang, Xiaoxiao
AU  - Wang X
AD  - College of Environmental Science and Engineering, Donghua University, Shanghai 
      201620, China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20190901
PL  - Netherlands
TA  - Environ Int
JT  - Environment international
JID - 7807270
RN  - 0 (Chlorides)
RN  - 0 (Chlorophenols)
RN  - 0 (Waste Water)
RN  - 0 (Water Pollutants, Chemical)
RN  - 789U1901C5 (Copper)
RN  - BBX060AN9V (Hydrogen Peroxide)
RN  - MHS8C5BAUZ (2,4,6-trichlorophenol)
SB  - IM
MH  - Catalysis
MH  - Chlorides/*chemistry
MH  - Chlorophenols/*chemistry
MH  - Copper/*chemistry
MH  - Hydrogen Peroxide/*chemistry
MH  - Hydrogen-Ion Concentration
MH  - Kinetics
MH  - Oxidation-Reduction
MH  - Waste Disposal, Fluid/methods
MH  - Wastewater/chemistry
MH  - Water Pollutants, Chemical/*chemistry
OTO - NOTNLM
OT  - Absorbable organic halogens
OT  - Chlorinated dibenzofuran
OT  - Cu(III)
OT  - Fenton-like
OT  - Reductio ad absurdum
EDAT- 2019/09/04 06:00
MHDA- 2020/02/26 06:00
CRDT- 2019/09/04 06:00
PHST- 2019/05/15 00:00 [received]
PHST- 2019/08/25 00:00 [revised]
PHST- 2019/08/25 00:00 [accepted]
PHST- 2019/09/04 06:00 [pubmed]
PHST- 2020/02/26 06:00 [medline]
PHST- 2019/09/04 06:00 [entrez]
AID - S0160-4120(19)31645-9 [pii]
AID - 10.1016/j.envint.2019.105128 [doi]
PST - ppublish
SO  - Environ Int. 2019 Nov;132:105128. doi: 10.1016/j.envint.2019.105128. Epub 2019 
      Sep 1.