Effects of nanoplastics on zebrafish embryo-larval stages: A case study with polystyrene (PS) and polymethylmethacrylate (PMMA) particles

Manuel, Pedro; Almeida, Miguel; Martins, Manuel A.; Oliveira, Miguel

doi:10.1016/j.envres.2022.113584

Cited by 32 publications

(17 citation statements)

References 36 publications

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“…One of the most widely manufactured polymers is polystyrene (PS), with a demand for plastics of 1.58 million tonnes in 2019 in only Europe 6,7 . PS is one of the most extensively researched in terms of its impacts on aquatic creatures due to its extensive usage, frequently in single-use goods connected to food packing 6 . Due to their loose structure and rough surface, PS is more readily exfoliated when subjected to modest mechanical stress, leading to many fractured spots with a size range of 20-100 m on the surface of containers 8 .…”

Section: Introductionmentioning

confidence: 99%

“…An efficient abatement technology is needed to break down organic contaminants. One of the most widely manufactured polymers is polystyrene (PS), with a demand for plastics of 1.58 million tonnes in 2019 in only Europe 6,7 . PS is one of the most extensively researched in terms of its impacts on aquatic creatures due to its extensive usage, frequently in single-use goods connected to food packing 6 .…”

Section: Introductionmentioning

confidence: 99%

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Sustainable coke-resistant Ca-Al nano-sized catalyst for cogenerating of H2 and high value liquid fuels via pyrolysis catalytic steam reforming reaction of the polystyrene-phenol mixture

Nabgan¹,

Ikram

Alqaraghuli

et al. 2022

Preprint

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The main challenge of pyrolysis-catalytic steam reforming to convert polystyrene wastes into high value products is the low selectivity and coke formation on the catalyst's surface. This work aims to design a highly catalytic active precious metal-free Ca-Al nanocatalyst, synthesized by impregnation and hydrothermal routes, for the conversion of polystyrene (PS) dissolved in phenol into H2 gas and liquid fuels via pyrolysis-catalytic steam reforming reaction using a well-designed setup reactor. The effect of physicochemical properties of the catalyst on the conversion mechanism. It was found that the catalyst with high γ-Al2O3 content (2Ca3Al) had an excellent overall performance due to its high surface area, sufficient holes uniformly distributed Ca and Al alloy, surface hydroxyl groups, and oxygen vacancies. The obtained phenol conversion and H2 yield of the 2Ca3Al nanocatalyst at 700 oC were 98.5% and 92.5%, respectively. The main detected compounds in the liquid product were tert-Butyl Hydroperoxide (TBH) and Dixanthogen. The relationship between the acidity of the catalyst's surface and the coke formation, which directly influences the performance and deactivation, was investigated. The results showed that the catalyst with higher acidity contents showed weaker resistance against coke formation. The as-prepared catalyst showed excellent performance and anti-coke formation, which would be applied for the simultaneous generation of hydrogen and valuable liquid fuels and the recycling of plastic wastes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sustainable coke-resistant Ca-Al nano-sized catalyst for cogenerating of H2 and high value liquid fuels via pyrolysis catalytic steam reforming reaction of the polystyrene-phenol mixture

Nabgan¹,

Ikram

Alqaraghuli

et al. 2022

Preprint

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show abstract

“…It is also used for textile, parts of automotives and electronics 35,36 . Although, several studies addressing the toxicity of nanoplastics focused on presence of other polymer, e.g., polystyrene (PS) nanoparticles [28][29][30][31][32] , the toxicity associated with PET and toxicity mechanisms, remain largely unstudied. PET particles have been found in groundwater, drinking water, soils and sediments and in the air 30,31,35,37 .…”

mentioning

confidence: 99%

“…As nanoplastics are essentially inert, their toxicity might be caused by the particulate nature (which is often altered in the biological system due to adsorption with other biomolecules) or by additives or other small organic molecules that leach out after uptake and are hazardous to human health 25,27 . In past years, most toxicological studies have focused on polystyrene nanoparticles (PS NPs) [28][29][30][31][32][33] . Studies have been carried out using human cell culture or fish larvae to address the toxicological impact of PS NPs and to understand the metabolic pathways affected at cellular and molecular level [28][29][30][31][32][33][34] .…”

mentioning

confidence: 99%

“…In past years, most toxicological studies have focused on polystyrene nanoparticles (PS NPs) [28][29][30][31][32][33] . Studies have been carried out using human cell culture or fish larvae to address the toxicological impact of PS NPs and to understand the metabolic pathways affected at cellular and molecular level [28][29][30][31][32][33][34] . It has been revealed that PS NPs enter the cell…”

mentioning

confidence: 99%

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A mechanistic understanding of the effects of polyethylene terephthalate nanoplastics in the zebrafish (Danio rerio) embryo

Bashirova

Poppitz

Klüver

et al. 2023

Sci Rep

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Plastic pollution, especially by nanoplastics (NPs), has become an emerging topic due to the widespread existence and accumulation in the environment. The research on bioaccumulation and toxicity mechanism of NPs from polyethylene terephthalate (PET), which is widely used for packaging material, have been poorly investigated. Herein, we report the first use of high-resolution magic-angle spinning (HRMAS) NMR based metabolomics in combination with toxicity assay and behavioural end points to get systems-level understanding of toxicity mechanism of PET NPs in intact zebrafish embryos. PET NPs exhibited significant alterations on hatching and survival rate. Accumulation of PET NPs in larvae were observed in liver, intestine, and kidney, which coincide with localization of reactive oxygen species in these areas. HRMAS NMR data reveal that PET NPs cause: (1) significant alteration of metabolites related to targeting of the liver and pathways associated with detoxification and oxidative stress; (2) impairment of mitochondrial membrane integrity as reflected by elevated levels of polar head groups of phospholipids; (3) cellular bioenergetics as evidenced by changes in numerous metabolites associated with interrelated pathways of energy metabolism. Taken together, this work provides for the first time a comprehensive system level understanding of toxicity mechanism of PET NPs exposure in intact larvae.

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Visible Light Induced Degradation of Poly(methyl methacrylate‐co‐methyl α‐chloro acrylate) Copolymer at Ambient Temperature

Arslan

Kılıçlar

Yagci

2023

Macromol. Rapid Commun.

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Poly(methyl methacrylate) (PMMA) is a well-known and widely used commodity plastic. High production amount of PMMA causes excessive waste creation that highlights the necessity of recycling. Conventional recycling methods require elevated temperatures to induce degradation or depolymerization. In this work, visible light induced photodegradation system by using dimanganese decacarbonyl (Mn 2 (CO) 10 ) with high halogen affinity is reported. Halide functional photodegradable polymers are prepared by copolymerization of methyl methacrylate and methyl 𝜶-chloroacrylate by conventional reversible addition-fragmentation chain-transfer polymerization. Synthesized copolymers are efficiently degraded to low molecular weight oligomers under visible light irradiation in the presence of Mn 2 (CO) 10 . Characteristics of precursors, degraded polymers, and kinetics of depolymerization are investigated by gel permeation chromatography (GPC), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourrier transform infrared (FTIR), and proton nuclear magnetic resonance ( 1 H-NMR) spectroscopies. The reported approach is expected to trigger further development of more environmentally friendly recycling techniques in the near future as we are moving toward a greener and more sustainable world.

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Effects of nanoplastics on zebrafish embryo-larval stages: A case study with polystyrene (PS) and polymethylmethacrylate (PMMA) particles

Cited by 32 publications

References 36 publications

Sustainable coke-resistant Ca-Al nano-sized catalyst for cogenerating of H2 and high value liquid fuels via pyrolysis catalytic steam reforming reaction of the polystyrene-phenol mixture

Sustainable coke-resistant Ca-Al nano-sized catalyst for cogenerating of H2 and high value liquid fuels via pyrolysis catalytic steam reforming reaction of the polystyrene-phenol mixture

A mechanistic understanding of the effects of polyethylene terephthalate nanoplastics in the zebrafish (Danio rerio) embryo

Visible Light Induced Degradation of Poly(methyl methacrylate‐co‐methyl α‐chloro acrylate) Copolymer at Ambient Temperature

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