A review on occurrence, characteristics, toxicology and treatment of nanoplastic waste in the environment

Ramasamy, Bhavya Shri Subramaniam; Palanisamy, Shanmugam

doi:10.1007/s11356-021-14883-6

Cited by 42 publications

(12 citation statements)

References 98 publications

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“…In addition to the lack of biodegradability, nanoplastics can act as adsorbents for other toxic pollutants like heavy metals, pesticides, and antibiotics, which make them highly toxic. − Nanoplastics are potentially more dangerous than microplastics because their smaller size enables them to pass through cell membranes and may create toxicological effects on their surroundings and pose a risk to humans harming gastrointestinal tract and kidney functions. − Among the various types of nanoplastics, polystyrene is one of the most used plastics for manufacturing CDs, toys, styrofoam (food containers and packing products), automobile parts, laboratory ware, and office supplies . Polystyrene (PS) provides around 90% of the world’s plastic needs and is commonly prevalent in the environment .…”

Section: Introductionmentioning

confidence: 99%

Nanoplastics Removal from Water using Metal–Organic Framework: Investigation of Adsorption Mechanisms, Kinetics, and Effective Environmental Parameters

Modak

Kasula

Esfahani

2023

ACS Appl. Eng. Mater.

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Nanoplastics are becoming a concern for the environment and are gaining significant attention due to their challenging removal process and ability to transport coexisting pollutants. Because of their mobility, small size (<1 μm), and accumulation tendency, nanoplastics are toxic for terrestrial and aquatic living organisms and humans, causing inflammation and oxidative stress. In this study, we investigated the removal of polystyrene nanoplastics (PSNPs) from water using a chromiumbased metal−organic framework (Cr-MOF/MIL-101). Cr-MOF was synthesized via a hydrothermal method using chromium nitrate and terephthalic acid and characterized via different analytical approaches. A 96% removal efficiency was achieved with initial concentrations of 5 and 70 ppm and adsorption kinetics followed the pseudo-first-order model. The adsorption isotherm at room temperature was best fitted with the Freundlich adsorption model, and the maximum adsorption capacity of 800 mg/g was achieved. The electrostatic interaction between PSNPs and Cr-MOF was the most dominating mechanism responsible for adsorption. The Cr-MOF showed acceptable regeneration capacity for cyclic removal of PSNPs.

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Section: Introductionmentioning

confidence: 99%

Nanoplastics Removal from Water using Metal–Organic Framework: Investigation of Adsorption Mechanisms, Kinetics, and Effective Environmental Parameters

Modak

Kasula

Esfahani

2023

ACS Appl. Eng. Mater.

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“…Ag seeds were activated at significantly higher onset saturation ratio than PET P and PET C seeds. Although oxidation during the generation of Ag seeds can be expected, PET P and PET C seeds originate from polyesters, thereby providing many docking stations to molecules of the working fluid. − These docking stations can be assumed to enhance heterogeneous nucleation processes …”

Section: Resultsmentioning

confidence: 99%

Heterogeneous Nucleation of Supersaturated Water Vapor onto Sub-10 nm Nanoplastic Particles

Wlasits

Konrat

Winkler

2023

Environ. Sci. Technol.

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Nanoplastic pollution by atmospheric transport processes is a recently discovered environmental problem on a global scale that is attributed to the dispersion of aerosolized nanoplastics. However, knowledge about the basic physicochemical properties of aerosol nanoplastic particles is scarce. Here, we present experiments on the heterogeneous nucleation of supersaturated water vapor onto sub-10 nm polyethylene terephthalate (PET) seeds. We determined onset saturation ratios for the activation of PET seeds in comparison to the well-documented reference system of silver particles, resulting in lower onset saturation ratios of the PET seeds compared to silver seeds. By using different PET bulk materials for the generation of nanoparticles, we report a strong material dependence of the onset saturation ratios, pointing to a strong effect of additives from commodity plastics in heterogeneous nucleation. Moreover, our results show a strong dependence on nucleation temperature that might be of immediate atmospheric relevance. Our work can be considered as an initial step in airborne nanoplastic detection by condensation techniques, and we anticipate our study to serve as a basis for further research that will eventually allow assessing the impact of nanoplastic dispersion on atmospheric processes.

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“…Moreover, diverse chemical groups may arise on the surfaces of M/NPs during their degradation and migration in the environment. Currently, reactive functional groups, including carboxylic, phenoxy hydroxyls, alcoholic hydroxyls, carbonyl, hydroxides, amine, and sulfonic groups [ 111 ], have been widely identified in environmental polymers. These functionalities of M/NPs result in different surface charges, impacting their corona formation, environmental and biological fates and toxicity.…”

Section: Matrices and Physicochemical Properties Of Environmental Mic...mentioning

confidence: 99%

Coronas of micro/nano plastics: a key determinant in their risk assessments

et al. 2022

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As an emerging pollutant in the life cycle of plastic products, micro/nanoplastics (M/NPs) are increasingly being released into the natural environment. Substantial concerns have been raised regarding the environmental and health impacts of M/NPs. Although diverse M/NPs have been detected in natural environment, most of them display two similar features, i.e.,high surface area and strong binding affinity, which enable extensive interactions between M/NPs and surrounding substances. This results in the formation of coronas, including eco-coronas and bio-coronas, on the plastic surface in different media. In real exposure scenarios, corona formation on M/NPs is inevitable and often displays variable and complex structures. The surface coronas have been found to impact the transportation, uptake, distribution, biotransformation and toxicity of particulates. Different from conventional toxins, packages on M/NPs rather than bare particles are more dangerous. We, therefore, recommend seriously consideration of the role of surface coronas in safety assessments. This review summarizes recent progress on the eco–coronas and bio-coronas of M/NPs, and further discusses the analytical methods to interpret corona structures, highlights the impacts of the corona on toxicity and provides future perspectives.

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A review on occurrence, characteristics, toxicology and treatment of nanoplastic waste in the environment

Cited by 42 publications

References 98 publications

Nanoplastics Removal from Water using Metal–Organic Framework: Investigation of Adsorption Mechanisms, Kinetics, and Effective Environmental Parameters

Nanoplastics Removal from Water using Metal–Organic Framework: Investigation of Adsorption Mechanisms, Kinetics, and Effective Environmental Parameters

Heterogeneous Nucleation of Supersaturated Water Vapor onto Sub-10 nm Nanoplastic Particles

Coronas of micro/nano plastics: a key determinant in their risk assessments

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