PMID- 37437485
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230725
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 458
DP  - 2023 Sep 15
TI  - The promoted degradation of biochar-adsorbed 2,4-dichlorophenol in the presence 
      of Fe(III).
PG  - 131774
LID - S0304-3894(23)01057-9 [pii]
LID - 10.1016/j.jhazmat.2023.131774 [doi]
AB  - Organic pollutant degradation by biochar could be promoted by Fe because of the 
      Fenton-like reaction. However, studies have also confirmed that reactive oxygen 
      species (ROS) play only a limited role in organic pollutant degradation by 
      biochar. Herein, we quantitatively identified 2,4-dichlorophenol (2,4-DCP) 
      adsorption and degradation in Fe-biochar systems and obtained degradation (k(1)) 
      and adsorption rate constants (k(2)) by two-compartment first-order kinetics 
      modeling. The k(1) was approximately 7-10 times lower than the corresponding k(2) 
      and the positive correlation between k(1) and k(2) illustrated that adsorption 
      and degradation were kinetically associated. ROS quenching only slightly 
      inhibited 2,4-DCP degradation. Chemicals with similar structures to ROS quenchers 
      (without quenching ability) also inhibited 2,4-DCP degradation, probably because 
      of the competition of the active degradation sites on biochars. Electrochemical 
      analysis and pH-impact experiments further elucidated that 2,4-DCP underwent 
      oxidation-dominated degradation in the adsorbed phase via direct electron 
      transfer. Fe(III) obviously increased 2,4-DCP adsorption through cation bridging 
      and enhanced electron density by Fe-O conjugations on the biochar surface, which 
      facilitated subsequent degradation. This study emphasized the importance of 
      degradation on the biochar solid phase and that a breakthrough of the mass 
      transfer bottleneck of adsorption will greatly promote degradation.
CI  - Copyright (c) 2023 Elsevier B.V. All rights reserved.
FAU - Zeng, Liang
AU  - Zeng L
AD  - Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution 
      Control, Faculty of Environmental Science & Engineering, Kunming University of 
      Science & Technology, Kunming 650500, China.
FAU - Chen, Quan
AU  - Chen Q
AD  - Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution 
      Control, Faculty of Environmental Science & Engineering, Kunming University of 
      Science & Technology, Kunming 650500, China.
FAU - Liang, Ni
AU  - Liang N
AD  - Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution 
      Control, Faculty of Environmental Science & Engineering, Kunming University of 
      Science & Technology, Kunming 650500, China.
FAU - Ji, Pixia
AU  - Ji P
AD  - Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution 
      Control, Faculty of Environmental Science & Engineering, Kunming University of 
      Science & Technology, Kunming 650500, China.
FAU - Lu, Meng
AU  - Lu M
AD  - Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution 
      Control, Faculty of Environmental Science & Engineering, Kunming University of 
      Science & Technology, Kunming 650500, China.
FAU - Wu, Min
AU  - Wu M
AD  - Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution 
      Control, Faculty of Environmental Science & Engineering, Kunming University of 
      Science & Technology, Kunming 650500, China.
FAU - Oleszczuk, Patryk
AU  - Oleszczuk P
AD  - Department of Environmental Chemistry, Faculty of Chemistry, Maria 
      Curie-Sklodowska University, 20-031 Lublin, Poland.
FAU - Pan, Bo
AU  - Pan B
AD  - Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution 
      Control, Faculty of Environmental Science & Engineering, Kunming University of 
      Science & Technology, Kunming 650500, China. Electronic address: 
      panbocai@gmail.com.
FAU - Xing, Baoshan
AU  - Xing B
AD  - Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA 
      01003, United States.
LA  - eng
PT  - Journal Article
DEP - 20230603
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
SB  - IM
OTO - NOTNLM
OT  - Carbon materials
OT  - Degradation
OT  - Electron transfer
OT  - Radicals
OT  - Redox reaction
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- 2023/07/13 01:06
MHDA- 2023/07/13 01:07
CRDT- 2023/07/12 18:08
PHST- 2023/02/16 00:00 [received]
PHST- 2023/05/25 00:00 [revised]
PHST- 2023/06/02 00:00 [accepted]
PHST- 2023/07/13 01:07 [medline]
PHST- 2023/07/13 01:06 [pubmed]
PHST- 2023/07/12 18:08 [entrez]
AID - S0304-3894(23)01057-9 [pii]
AID - 10.1016/j.jhazmat.2023.131774 [doi]
PST - ppublish
SO  - J Hazard Mater. 2023 Sep 15;458:131774. doi: 10.1016/j.jhazmat.2023.131774. Epub 
      2023 Jun 3.