PMID- 29174048
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180205
LR  - 20180205
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 344
DP  - 2018 Feb 15
TI  - Degradation of 2,4-dichlorophenol by activating persulfate and peroxomonosulfate 
      using micron or nanoscale zero-valent copper.
PG  - 1209-1219
LID - S0304-3894(17)30845-2 [pii]
LID - 10.1016/j.jhazmat.2017.11.023 [doi]
AB  - The ability of persulfate (PS) and peroxymonosulfate (PMS) activated by micron or 
      nanoscale zero-valent copper (ZVC or nZVC) to degrade 2,4-dichlorophenol 
      (2,4-DCP) was quantified under various conditions. Mechanism investigation 
      revealed that PS and PMS accelerated the corrosion of ZVC or nZVC to release 
      Cu(+) under acidic conditions. The in-situ generated Cu(+) further decomposed PS 
      or PMS to produce SO(4)(-) and OH, which then dramatically degraded 2,4-DCP. The 
      k(obs) for 2,4-DCP removal followed pseudo-first-order kinetics, k(obs) of 
      ZVC/PMS and nZVC/PMS systems were 10 approximately 30 times greater than these in ZVC/PS and 
      nZVC/PS systems. The nZVC/PMS system was most effective to remove 2,4-DCP which 
      even did better than the nZVI/PMS system, with rate constant values ranging from 
      0.041 to 1.855min(-1). At higher pH ZVC is ineffective, but nZVC can activate PS 
      and PMS to significantly degrade 2,4-DCP at pH up to 7.3. The 2,4-DCP degradation 
      pathway was found to involve dechloridation, dehydrogenation, hydroxylation, ring 
      open and mineralization. 56.7% and 45.3% of TOC removals were respectively 
      obtained in the ZVC/PMS and nZVC/PMS systems within 120min. This study helps to 
      comprehend the application of zero-valent metals in reactive radicals-based 
      oxidation processes and the reactivity of Cu(+) as an activator of PS and PMS.
CI  - Copyright (c) 2017 Elsevier B.V. All rights reserved.
FAU - Zhou, Peng
AU  - Zhou P
AD  - College of Architecture & Environment, Sichuan University, Chengdu 610065, China.
FAU - Zhang, Jing
AU  - Zhang J
AD  - College of Architecture & Environment, Sichuan University, Chengdu 610065, China. 
      Electronic address: zjing428@163.com.
FAU - Zhang, Yongli
AU  - Zhang Y
AD  - College of Architecture & Environment, Sichuan University, Chengdu 610065, China.
FAU - Zhang, Gucheng
AU  - Zhang G
AD  - College of Architecture & Environment, Sichuan University, Chengdu 610065, China.
FAU - Li, Wenshu
AU  - Li W
AD  - College of Architecture & Environment, Sichuan University, Chengdu 610065, China.
FAU - Wei, Chenmo
AU  - Wei C
AD  - College of Architecture & Environment, Sichuan University, Chengdu 610065, China.
FAU - Liang, Juan
AU  - Liang J
AD  - College of Architecture & Environment, Sichuan University, Chengdu 610065, China.
FAU - Liu, Ya
AU  - Liu Y
AD  - College of Architecture & Environment, Sichuan University, Chengdu 610065, China.
FAU - Shu, Shihu
AU  - Shu S
AD  - State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of 
      Technology, Harbin 150090, China.
LA  - eng
PT  - Journal Article
DEP - 20171114
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
OTO - NOTNLM
OT  - Hydroxyl radical
OT  - Peroxymonosulfate
OT  - Persulfate
OT  - Sulfate radical
OT  - Zero-velant copper
EDAT- 2017/11/28 06:00
MHDA- 2017/11/28 06:01
CRDT- 2017/11/28 06:00
PHST- 2017/07/17 00:00 [received]
PHST- 2017/11/08 00:00 [revised]
PHST- 2017/11/13 00:00 [accepted]
PHST- 2017/11/28 06:00 [pubmed]
PHST- 2017/11/28 06:01 [medline]
PHST- 2017/11/28 06:00 [entrez]
AID - S0304-3894(17)30845-2 [pii]
AID - 10.1016/j.jhazmat.2017.11.023 [doi]
PST - ppublish
SO  - J Hazard Mater. 2018 Feb 15;344:1209-1219. doi: 10.1016/j.jhazmat.2017.11.023. 
      Epub 2017 Nov 14.