PMID- 33677196
OWN - NLM
STAT- MEDLINE
DCOM- 20210621
LR  - 20210621
IS  - 1095-7103 (Electronic)
IS  - 0021-9797 (Linking)
VI  - 592
DP  - 2021 Jun 15
TI  - Perdisulfate-assisted advanced oxidation of 2,4-dichlorophenol by bio-inspired 
      iron encapsulated biochar catalyst.
PG  - 358-370
LID - S0021-9797(21)00202-2 [pii]
LID - 10.1016/j.jcis.2021.02.056 [doi]
AB  - To improve advanced oxidation processes (AOPs), bio-inspired iron-encapsulated 
      biochar (bio-inspired Fe⨀BC) catalysts with superior performance were prepared 
      from iron-rich biomass of Iris sibirica L. using a pyrolysis method under 
      anaerobic condition. The obtained compounds were used as catalysts to activate 
      perdisulfate (PDS) and then degradate 2,4-dichlorophenol (2,4-DCP), and synthetic 
      iron-laden biochar (synthetic Fe-BC) was used for comparison. The highest removal 
      rate of 2,4-DCP was 98.35%, with 37.03% of this being distinguished as the 
      contribution of micro-electrolysis, greater than the contribution of adsorption 
      (32.81%) or advanced oxidation (28.51%). The high performance of 
      micro-electrolysis could be attributable to the formation of Fe (Iron, syn) and 
      austenite (CFe(15.1)) with strong electron carrier at 700  degrees C. During 
      micro-electrolysis, Fe(2+) and electrons were gradually released and then used as 
      essential active components to enhance the AOPs. The slow-releasing Fe(2+) 
      (K = 0.0048) also inhibited the overconsumption of PDS (K = -0.00056). 
      Furthermore, the electrons donated from Fe⨀BC-4 were able to activate PDS 
      directly. The electrons were enriched by the porous structure of Fe⨀BC-4, and the 
      formation of the COFe bond in the pi-electron system could also accelerate the 
      electron transfer to activate PDS. Similar reactive oxygen species (ROS) were 
      identified during the micro-electrolysis and AOPs, leading to similar degradation 
      pathways. The higher does concentration of O(2)(-) generated during 
      micro-electrolysis than during the AOPs also led to a greater dechlorination 
      effect.
CI  - Copyright (c) 2021 Elsevier Inc. All rights reserved.
FAU - Wang, Yangyang
AU  - Wang Y
AD  - State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese 
      Research Academy of Environmental Sciences, Beijing 100012, PR China; School of 
      Construction and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 
      518055, PR China.
FAU - Wang, Lei
AU  - Wang L
AD  - State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese 
      Research Academy of Environmental Sciences, Beijing 100012, PR China; School of 
      Construction and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 
      518055, PR China. Electronic address: wangleicraes@163.com.
FAU - Zhang, Yalei
AU  - Zhang Y
AD  - State Key Laboratory of Pollution Control and Resource Reuse, School of 
      Environmental Science and Engineering, Tongji University, Shanghai 200092, PR 
      China.
FAU - Mao, Xuhui
AU  - Mao X
AD  - School of Resource and Environmental Science, Hubei International Scientific and 
      Technological Cooperation Base of Sustainable Resource and Energy, Wuhan 
      University, Wuhan 430072, PR China.
FAU - Tan, Wenbing
AU  - Tan W
AD  - State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese 
      Research Academy of Environmental Sciences, Beijing 100012, PR China.
FAU - Zhang, Yali
AU  - Zhang Y
AD  - Institute of Geographic Sciences and Natural Resources Research, Center for 
      Chinese Agricultural Policy, Chinese Academy of Sciences, Beijing 100101, PR 
      China.
FAU - Wang, Xiaoshu
AU  - Wang X
AD  - School of Construction and Environmental Engineering, Shenzhen Polytechnic, 
      Shenzhen 518055, PR China; Shenzhen BeiYu Environmental Technology Co, Ltd, 
      Shenzhen 518063, PR China.
FAU - Chang, Ming
AU  - Chang M
AD  - State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese 
      Research Academy of Environmental Sciences, Beijing 100012, PR China.
FAU - Guo, Ruonan
AU  - Guo R
AD  - State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese 
      Research Academy of Environmental Sciences, Beijing 100012, PR China.
FAU - Xi, Beidou
AU  - Xi B
AD  - State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese 
      Research Academy of Environmental Sciences, Beijing 100012, PR China.
LA  - eng
PT  - Journal Article
DEP - 20210220
PL  - United States
TA  - J Colloid Interface Sci
JT  - Journal of colloid and interface science
JID - 0043125
RN  - 0 (Chlorophenols)
RN  - 0 (Water Pollutants, Chemical)
RN  - 0 (biochar)
RN  - 16291-96-6 (Charcoal)
RN  - E1UOL152H7 (Iron)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Charcoal
MH  - *Chlorophenols
MH  - Iron
MH  - Oxidation-Reduction
MH  - *Water Pollutants, Chemical/analysis
OTO - NOTNLM
OT  - 2,4-dichlorophenol removal
OT  - Advanced oxidation processes
OT  - Bio-inspired catalyst
OT  - Fe⨀BC
OT  - Micro-electrolysis
COIS- Declaration of Competing Interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2021/03/08 06:00
MHDA- 2021/06/22 06:00
CRDT- 2021/03/07 20:33
PHST- 2020/12/09 00:00 [received]
PHST- 2021/02/09 00:00 [revised]
PHST- 2021/02/12 00:00 [accepted]
PHST- 2021/03/08 06:00 [pubmed]
PHST- 2021/06/22 06:00 [medline]
PHST- 2021/03/07 20:33 [entrez]
AID - S0021-9797(21)00202-2 [pii]
AID - 10.1016/j.jcis.2021.02.056 [doi]
PST - ppublish
SO  - J Colloid Interface Sci. 2021 Jun 15;592:358-370. doi: 
      10.1016/j.jcis.2021.02.056. Epub 2021 Feb 20.