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Transport of layered and spherical microplastics in aqueous ecosystems: a review

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Abstract

Microplastics are micrometre-sized emerging pollutants produced by plastic fragmentation. They have been recently detected in most ecosystems, even in remote areas. Here, we review microplastics with emphasis on sources, occurrence, transport, detection methods, policies, toxicity, and management methods. In the transport section, we discuss sorption kinetics, layered microplastics, and influencing factors such as biofilm formation. Microplastic management can be done by adsorption, filtration, oxidation, and biodegradation. Microplastic interaction is influenced by temperature, pH, salinity, and dissolved organic matter.

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Abbreviations

AD:

Anaerobic digestion

AOP:

Advanced oxidation process

ARG:

Antibiotic resistant gene

ATR-FTIR:

Attenuated total reflectance Fourier transform Infrared spectroscopy

ASP:

Activated sludge process

COD:

Chemical oxygen deman

COF:

Covalent organic frameworks

DLVO:

Derjaguin–Lsndau–Verwey–Overbeek

DOM:

Dissolved organic matter

DSC:

Differential scanning calorimetric

EDL:

Electrical double layer

EDX:

Energy-dispersive X-ray spectroscopy

EPFR:

Environmentally persistent free radicals

EPS:

Exo poly saccharides

ETPs:

Effluent treatment plants

FPA:

Focal plane array

HDPE:

High-density polyethylene

HIS:

Hyperspectral imaging

HRT:

Hydraulic retention time

J :

Flux

\(K^{*}_{{{\text{mpl}} - w}}\) :

Three phase partitioning coefficient

\(K_{{{\text{mpl}} - w}}\) :

Partitioning co-efficient

K ow :

Octanol/water partitioning coefficient

K surf :

Plastic layer thickness of readily sorbing the contaminants

K w :

Mass transfer coefficient of the aqueous phase

LCR:

Lorentz contact resonance

MALDI-TOF-MS:

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry

MLSS:

Mixed liquor suspended solids

MLVSS:

Mixed liquor volatile suspended solids

MOF:

Metal organic frameworks

mpl:

Microplastics layers

mpo :

Mass of spherical particles

NOM:

Natural organic matter

PA:

Polyamide

PAHs:

Polycyclic aromatic hydrocarbons

PCPs:

Personal care products

PCBs:

Polychlorinated biphenyls

PE:

Polyethylene

PET:

Polyethylene terephthalate

PLM:

Polarized optical or light microscopy

POPs:

Persistent organic pollutants

PP:

Polypropylene

Py-GC-MS:

Pyrolysis—gas chromatography mass spectrometry

Py-MS:

Pyrolysis mass spectrometry

\(\rho_{{{\text{po}}}}\) :

Mass density of spherical particles

q e :

Equilibrium uptake

q max :

Maximum sorption capacity

\(r_{{{\text{po}}}}\) :

Radius of spherical particles

RO:

Reverse osmosis

ROS:

Reactive oxygen species

SEM:

Scanning electron microscope

SPE:

Solid phase extraction

SSA:

Specific surface area

(TED)-GC-MS:

Thermoextraction and desorption GCMS

t g :

Transition temperature

TGA:

Thermogravimetric analysis

UF:

Ultrafiltration

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Funding

No funding was received to assist with the preparation of this manuscript.

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Authors

Contributions

Kheerthana Ramesh was contributed data curation and writing—original draft; Padmanaban Velayudhaperumal Chellam was involved in conceptualization, writing—review and editing, and supervision; and Baranidharan Sundaram was perfomed writing—review and editing.

Corresponding author

Correspondence to Padmanaban Velayudhaperumal Chellam.

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Ramesh, K., Chellam, P.V. & Sundaram, B. Transport of layered and spherical microplastics in aqueous ecosystems: a review. Environ Chem Lett 22, 1221–1255 (2024). https://doi.org/10.1007/s10311-024-01730-6

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  • DOI: https://doi.org/10.1007/s10311-024-01730-6

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