PMID- 35316633
OWN - NLM
STAT- MEDLINE
DCOM- 20220408
LR  - 20220504
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 432
DP  - 2022 Jun 15
TI  - Integration of in-situ chemical oxidation and permeable reactive barrier for the 
      removal of chlorophenols by copper oxide activated peroxydisulfate.
PG  - 128726
LID - S0304-3894(22)00515-5 [pii]
LID - 10.1016/j.jhazmat.2022.128726 [doi]
AB  - In-situ chemical oxidation (ISCO) and permeable reactive barrier (PRB) have been 
      used in field practices for contaminated groundwater remediation. In this 
      lab-scale study, a novel system integrating ISCO and PRB using peroxydisulfate 
      (PDS) as the oxidant and copper oxide (CuO) as the reactive barrier material was 
      developed for the removal of 2,4-dichlorophenol (2,4-DCP), 2,4,6-trichlorophenol 
      (2,4,6-TCP) and pentachlorophenol (PCP). The influences of chlorophenol 
      concentration and flow rate on the system performance were first evaluated using 
      synthetic solutions. The removal efficiencies of target chlorophenols were 
      greater than 90% when sufficient PDS was supplied ([PDS]/[chlorophenol]>1). It 
      was also found that the removal efficiencies decreased with the increasing 
      chlorophenol concentrations (10-150 muM) and flow rates (1.8-14.4 mL/min). When 
      three real groundwaters were employed, the removal efficiencies of 2,4-DCP and 
      2,4,6-TCP slightly reduced to 90% and 85%, respectively. For PCP, the removal 
      efficiency dropped to 20% in two groundwaters with relatively high levels of 
      alkalinity. The influences of pH and TOC were found to be insignificant for the 
      range investigated (pH 6.5-8.7 and TOC = 0.4-1.5 mgC/L). The reduced removal 
      efficiency could be due to the formation of weaker radicals and the stronger 
      competition between bicarbonate ions and PDS for the activation sites on the CuO 
      surfaces.
CI  - Copyright (c) 2022 Elsevier B.V. All rights reserved.
FAU - Cho, Yi-Chin
AU  - Cho YC
AD  - Graduate Institute of Environmental Engineering, National Taiwan University, No. 
      1, Section 4, Roosevelt Road, Taipei 10617, Taiwan.
FAU - Hsu, Chia-Chun
AU  - Hsu CC
AD  - Graduate Institute of Environmental Engineering, National Taiwan University, No. 
      1, Section 4, Roosevelt Road, Taipei 10617, Taiwan.
FAU - Lin, Yi-Pin
AU  - Lin YP
AD  - Graduate Institute of Environmental Engineering, National Taiwan University, No. 
      1, Section 4, Roosevelt Road, Taipei 10617, Taiwan; NTU Research Center for 
      Future Earth, National Taiwan University, Taipei, Taiwan. Electronic address: 
      yipinlin@ntu.edu.tw.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20220317
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 0 (Chlorophenols)
RN  - 0 (Oxides)
RN  - 0 (Water Pollutants, Chemical)
RN  - 789U1901C5 (Copper)
SB  - IM
MH  - *Chlorophenols
MH  - Copper
MH  - Oxidation-Reduction
MH  - Oxides
MH  - *Water Pollutants, Chemical
OTO - NOTNLM
OT  - Chlorophenols
OT  - CuO
OT  - In-situ chemical oxidation
OT  - Permeable reactive barrier
OT  - Peroxydisulfate
EDAT- 2022/03/23 06:00
MHDA- 2022/04/09 06:00
CRDT- 2022/03/22 20:06
PHST- 2021/12/03 00:00 [received]
PHST- 2022/02/27 00:00 [revised]
PHST- 2022/03/14 00:00 [accepted]
PHST- 2022/03/23 06:00 [pubmed]
PHST- 2022/04/09 06:00 [medline]
PHST- 2022/03/22 20:06 [entrez]
AID - S0304-3894(22)00515-5 [pii]
AID - 10.1016/j.jhazmat.2022.128726 [doi]
PST - ppublish
SO  - J Hazard Mater. 2022 Jun 15;432:128726. doi: 10.1016/j.jhazmat.2022.128726. Epub 
      2022 Mar 17.