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Microplastics in urban waters and its effects on microbial communities: a critical review

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Abstract

Microplastic (MP) pollution is one of the emerging threats to the water and terrestrial environment, forcing a new environmental challenge due to the growing trend of plastic released into the environment. Synthetic and non-synthetic plastic components can be found in rivers, lakes/reservoirs, oceans, mountains, and even remote areas, such as the Arctic and Antarctic ice sheets. MPs’ main challenge is identifying, measuring, and evaluating their impacts on environmental behaviors, such as carbon and nutrient cycles, water and wastewater microbiome, and the associated side effects. However, until now, no standardized methodical protocols have been proposed for comparing the results of studies in different environments, especially in urban water and wastewater. This review briefly discusses MPs’ sources, fate, and transport in urban waters and explains methodological uncertainty. The effects of MPs on urban water microbiomes, including urban runoff, sewage wastewater, stagnant water in plumbing networks, etc., are also examined in depth. Furthermore, this study highlights the pathway of MPs and their transport vectors to different parts of ecosystems and human life, particularly through mediating microbial communities, antibiotic-resistant genes, and biogeochemical cycles. Overall, we have briefly highlighted the present research gaps, the lack of appropriate policy for evaluating microplastics and their interactions with urban water microbiomes, and possible future initiatives.

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Abbreviations

ARB:

Antibiotic-resistant bacteria

ARGs:

Antibiotic resistance genes

ATR-FTIR:

Attenuated total reflection-Fourier transform infrared

BS:

Borosilicate spheres

CSOs:

Combined sewer overflows

DOC:

Dissolved organic carbon

DW:

Drinking water

DWDSs:

Drinking water distribution systems

DWMs:

Drinking water microbiome

IWS:

Intermittent water supply

LDPE:

Low-density PE

MPs:

Microplastics

NPs:

Nano-plastics

PCPs:

Personal care products

PA:

Polyamide

PCL:

Polycaprolactone

PCBs:

Polychlorinated biphenyls

PAHs:

Polycyclic aromatic hydrocarbons

PE:

Polyethylene

PET:

Polyethylene terephthalate

PLA:

Polylactic acid

PP:

Polypropylene

PS :

Polystyrene

PUR:

Polyurethane

PVC:

Polyvinyl chloride

TC:

Tetracycline

WWTPs:

Wastewater treatment plants

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Funding

This work was supported by the President’s International Fellowship Initiative (PIFI) from the Chinese Academy of Sciences.

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Authors and Affiliations

Authors

Contributions

All authors read and approved the final manuscript.

Saber Entezari: conceptualization; investigation; resources; writing—original draft; writing—review and editing.

Mamun Abdullah Al: investigation, resources.

Amir Mostashari: resources; writing—original draft; writing—review and editing.

Hossein Ganjidoust: conceptualization, methodology, investigation, supervision (supervisor).

Bita Ayati: investigation, supervision (advisor).

Jun Yang: investigation, supervision (advisor).

Corresponding author

Correspondence to Hossein Ganjidoust.

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  2) Drafted the work or revised it critically for important intellectual content;

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  4) Agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.

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Competing interests

The authors declare no competing interests.

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Highlights

• Biofilm changes hydrophobicity/hydropathy, buoyancy, and abiotic degradability of microplastics by UV radiation.

• Microplastics can alter the structure, composition, and functional properties of bacteria.

• Bacterial communities inhabiting the surfaces of aquatic MPs differ significantly from their surrounding environment.

• Microplastics act as a vector for microorganisms, antibiotic resistance genes (ARGs), heavy metals, and other pollutants transport.

• MPs affect carbon, nitrogen, and phosphorus, and biogeochemical cycles.

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Entezari, S., Al, M.A., Mostashari, A. et al. Microplastics in urban waters and its effects on microbial communities: a critical review. Environ Sci Pollut Res 29, 88410–88431 (2022). https://doi.org/10.1007/s11356-022-23810-2

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