PMID- 32544662
OWN - NLM
STAT- MEDLINE
DCOM- 20200817
LR  - 20200817
IS  - 1873-6424 (Electronic)
IS  - 0269-7491 (Linking)
VI  - 265
IP  - Pt A
DP  - 2020 Oct
TI  - Adsorption of chlorophenols on polyethylene terephthalate microplastics from 
      aqueous environments: Kinetics, mechanisms and influencing factors.
PG  - 114926
LID - S0269-7491(20)31107-6 [pii]
LID - 10.1016/j.envpol.2020.114926 [doi]
AB  - Microplastics have received growing attention as carriers of organic pollutants 
      in the water environment. To better understand the contribution of hydrophobic 
      interaction, hydrogen-bonding interaction, pi-pi interaction and electrostatic 
      interaction on the adsorption of hydrophilic compounds on microplastics and their 
      adsorption behavior in natural waters, polyethylene terephthalate (PET, <150 mum) 
      was used as an adsorbent and 4-chlorophenol (MCP), 2,4-dichlorophenol (DCP) and 
      2,4,6-trichlorophenol (TCP) were used as adsorbates. The results of batch 
      adsorption experiments showed that chlorophenols (CPs) reached adsorption sites 
      of PET through film diffusion and intra-particle diffusion. pH greatly affected 
      the adsorption capacity. Hydrophobic interaction was the main adsorption 
      mechanism of undissociated CPs on PET. Hydrogen-bonding interaction was also an 
      adsorption mechanism between undissociated CPs and PET, and the contribution of 
      hydrogen-bonding interaction to adsorption decreased with the increase of 
      chlorine content. Meanwhile, the increase of chlorine content was favorable to 
      the hydrophobic interaction between undissociated CPs and PET. However, higher 
      chlorine content CPs with lower pK(a) values tended to dissociate at neutral pH 
      condition and resulted in stronger electrostatic repulsion with PET. The increase 
      of solution ionic strength and fulvic acid content negatively affected the 
      adsorption of DCP and TCP on PET, but did not show significant impacts on MCP 
      adsorption. Similarly, the adsorption capacity obtained using Taihu lake water 
      and Bohai seawater as matrices was much lower than that using laboratory water 
      for both DCP and TCP, while the adsorption coefficient (K(d)) of MCP remained at 
      approximately 10.6 L/kg to 11.4 L/kg in the three different solution matrices. 
      The K(d) values exhibited using natural water matrices consistently followed the 
      order of DCP > MCP > TCP. This study provides insights into the fate of CPs in 
      the presence of microplastics and suggests that the potential risks posed by CPs 
      and microplastics to aqueous ecosystems merit further investigation.
CI  - Copyright (c) 2020 Elsevier Ltd. All rights reserved.
FAU - Liu, Zheming
AU  - Liu Z
AD  - Department of Municipal Engineering, School of Civil Engineering, Southeast 
      University, Nanjing, Jiangsu, 210096, China. Electronic address: seulzm@163.com.
FAU - Qin, Qingdong
AU  - Qin Q
AD  - Department of Municipal Engineering, School of Civil Engineering, Southeast 
      University, Nanjing, Jiangsu, 210096, China. Electronic address: 
      qinqingdong@seu.edu.cn.
FAU - Hu, Zhixian
AU  - Hu Z
AD  - Department of Municipal Engineering, School of Civil Engineering, Southeast 
      University, Nanjing, Jiangsu, 210096, China. Electronic address: 
      huzhixian97@163.com.
FAU - Yan, Lu
AU  - Yan L
AD  - Department of Municipal Engineering, School of Civil Engineering, Southeast 
      University, Nanjing, Jiangsu, 210096, China. Electronic address: 
      luluyan_seu@163.com.
FAU - Ieong, Un-Io
AU  - Ieong UI
AD  - Department of Municipal Engineering, School of Civil Engineering, Southeast 
      University, Nanjing, Jiangsu, 210096, China. Electronic address: 
      1031680789@qq.com.
FAU - Xu, Yan
AU  - Xu Y
AD  - Department of Municipal Engineering, School of Civil Engineering, Southeast 
      University, Nanjing, Jiangsu, 210096, China. Electronic address: 
      xuxucalmm@seu.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20200606
PL  - England
TA  - Environ Pollut
JT  - Environmental pollution (Barking, Essex : 1987)
JID - 8804476
RN  - 0 (Chlorophenols)
RN  - 0 (Microplastics)
RN  - 0 (Plastics)
RN  - 0 (Polyethylene Terephthalates)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Adsorption
MH  - *Chlorophenols
MH  - Ecosystem
MH  - Kinetics
MH  - Microplastics
MH  - Plastics
MH  - Polyethylene Terephthalates
MH  - Water Pollutants, Chemical/*analysis
OTO - NOTNLM
OT  - Adsorption
OT  - Chlorophenols
OT  - Diffusion
OT  - Microplastics
OT  - NOM
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- 2020/06/17 06:00
MHDA- 2020/08/18 06:00
CRDT- 2020/06/17 06:00
PHST- 2020/02/14 00:00 [received]
PHST- 2020/05/31 00:00 [revised]
PHST- 2020/05/31 00:00 [accepted]
PHST- 2020/06/17 06:00 [pubmed]
PHST- 2020/08/18 06:00 [medline]
PHST- 2020/06/17 06:00 [entrez]
AID - S0269-7491(20)31107-6 [pii]
AID - 10.1016/j.envpol.2020.114926 [doi]
PST - ppublish
SO  - Environ Pollut. 2020 Oct;265(Pt A):114926. doi: 10.1016/j.envpol.2020.114926. 
      Epub 2020 Jun 6.