PMID- 34146885
OWN - NLM
STAT- MEDLINE
DCOM- 20210909
LR  - 20210909
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 283
DP  - 2021 Nov
TI  - Adsorption of micropollutants onto realistic microplastics: Role of microplastic 
      nature, size, age, and NOM fouling.
PG  - 131085
LID - S0045-6535(21)01557-5 [pii]
LID - 10.1016/j.chemosphere.2021.131085 [doi]
AB  - This work aims at evaluating the role of nature, size, age, and natural organic 
      matter (NOM) fouling of realistic microplastics (MPs) on the adsorption of two 
      persistent micropollutants (diclofenac (DCF) and metronidazole (MNZ)). For such 
      goal, four representative polymer types (polystyrene (PS), polyethylene 
      terephthalate (PET), polypropylene (PP) and high-density polyethylene (HDPE)) 
      were tested. MPs were obtained by cryogenic milling of different commercial 
      materials (disposable bottles, containers, and trays), and fully characterized 
      (optical microscopic and SEM images, FTIR, elemental analysis, water contact 
      angle and pH(slurry)). The micropollutants hydrophobicity determined to a high 
      extent their removal yield from water. Regardless of the MP's nature, the 
      adsorption capacity for DCF was considerably higher than the achieved for MNZ, 
      which can be related to its stronger hydrophobic properties and aromatic 
      character. In fact, aromatic MPs (PS and PET) showed the highest adsorption 
      capacity values with DCF (~100 mug g(-1)). The MP size also played a key role on 
      its adsorption capacity, which was found to increase with decreasing the particle 
      size (20-1000 mum). MPs aging (simulated by Fenton oxidation) led also to 
      substantial changes on their sorption behavior. Oxidized MPs exhibited acidic 
      surface properties which led to a strong decrease on the adsorption of the 
      hydrophobic micropollutant (DCF) but to an increase with the hydrophilic one 
      (MNZ). NOM fouling (WWTP effluent, river water, humic acid solution) led to a 
      dramatic decrease on the MPs sorption capacity due to sorption sites blocking. 
      Finally, the increase of pH or salinity of the aqueous medium increased the 
      micropollutants desorption.
CI  - Copyright (c) 2021 The Author(s). Published by Elsevier Ltd.. All rights reserved.
FAU - Munoz, Macarena
AU  - Munoz M
AD  - Chemical Engineering Department, Universidad Autonoma de Madrid, Ctra. Colmenar 
      Km 15, 28049 Madrid, Spain. Electronic address: macarena.munnoz@uam.es.
FAU - Ortiz, David
AU  - Ortiz D
AD  - Chemical Engineering Department, Universidad Autonoma de Madrid, Ctra. Colmenar 
      Km 15, 28049 Madrid, Spain.
FAU - Nieto-Sandoval, Julia
AU  - Nieto-Sandoval J
AD  - Chemical Engineering Department, Universidad Autonoma de Madrid, Ctra. Colmenar 
      Km 15, 28049 Madrid, Spain. Electronic address: julia.nieto-sandoval@uam.es.
FAU - de Pedro, Zahara M
AU  - de Pedro ZM
AD  - Chemical Engineering Department, Universidad Autonoma de Madrid, Ctra. Colmenar 
      Km 15, 28049 Madrid, Spain.
FAU - Casas, Jose A
AU  - Casas JA
AD  - Chemical Engineering Department, Universidad Autonoma de Madrid, Ctra. Colmenar 
      Km 15, 28049 Madrid, Spain.
LA  - eng
PT  - Journal Article
DEP - 20210612
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Microplastics)
RN  - 0 (Plastics)
RN  - 0 (Polystyrenes)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Adsorption
MH  - *Microplastics
MH  - Plastics
MH  - Polystyrenes
MH  - *Water Pollutants, Chemical/analysis
OTO - NOTNLM
OT  - Adsorption
OT  - Diclofenac
OT  - Metronidazole
OT  - Microplastic
OT  - Micropollutant
OT  - Polystyrene
EDAT- 2021/06/20 06:00
MHDA- 2021/09/10 06:00
CRDT- 2021/06/19 20:19
PHST- 2021/03/18 00:00 [received]
PHST- 2021/05/17 00:00 [revised]
PHST- 2021/06/02 00:00 [accepted]
PHST- 2021/06/20 06:00 [pubmed]
PHST- 2021/09/10 06:00 [medline]
PHST- 2021/06/19 20:19 [entrez]
AID - S0045-6535(21)01557-5 [pii]
AID - 10.1016/j.chemosphere.2021.131085 [doi]
PST - ppublish
SO  - Chemosphere. 2021 Nov;283:131085. doi: 10.1016/j.chemosphere.2021.131085. Epub 
      2021 Jun 12.