Distribution and risk assessment of microplastic pollution in a rural river system near a wastewater treatment plant, hydro-dam, and river confluence

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Март 12, 2024

Abstract Rivers are the natural drainage system, transporting anthropogenic wastes and pollution, including microplastics (plastic < 5 mm). In a riverine can enter from different sources, have spatial variance in concentration, physical chemical properties, imposed risk to ecosystem. This pilot study presents an examination of water sediment samples using single sample collection rural Raquette River, NY evaluate hypothesis that distinct locations river, such as downstream wastewater treatment plant, upstream hydro-dam, river confluence, may be higher concentration. general, our results revealed presence high microplastic concentrations plant (in sediments), hydro dam (both sediment), confluence (water sample), compared other sites. Moreover, assessment indicates even with most its basin comprising forested agricultural land, water, at all three polluted (pollution load index, PLI > 1; zone = 1.87 1.68 for respectively), categories between Levels I IV (“minor” “danger”). Overall, stands “considerable” category (PRI 134 113 respectively). The overall objective this was advance understanding dynamics systems, elucidating their introduction point source (wastewater plant), transit through impediment (hydro-dam), release into vital transboundary (confluence Raquette-St. Lawrence Rivers).

Язык: Английский

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Effective degradation of polystyrene microplastics by Ti/La/Co-Sb-SnO2 anodes: Enhanced electrocatalytic stability and electrode lifespan

The Science of The Total Environment, Год журнала: 2024, Номер 922, С. 171002 - 171002

Опубликована: Фев. 17, 2024

Язык: Английский

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Insights into the mechanisms involved in the fungal degradation of plastics

Ecotoxicology and Environmental Safety, Год журнала: 2023, Номер 262, С. 115202 - 115202

Опубликована: Июнь 29, 2023

Fungi are considered among the most efficient microbial degraders of plastics, as they produce salient enzymes and can survive on recalcitrant compounds with limited nutrients. In recent years, studies have reported numerous species fungi that degrade different types yet there remain many gaps in our understanding processes involved biodegradation. addition, unknowns need to be resolved regarding fungal responsible for plastic fragmentation regulatory mechanisms which use hydrolyse, assimilate mineralize synthetic plastics. This review aims detail main methods used hydrolysis by fungi, key enzymatic molecular mechanisms, chemical agents enhance breakdown viable industrial applications. Considering polymers such lignin, bioplastics, phenolics, other petroleum-based exhibit closely related characteristics terms hydrophobicity structure, degraded similar we reasoned genes been regulate biodegradation these or their homologs could equally regulation degrading fungi. Thus, this highlights provides insight into some likely target enzymes, genes, transcription factors process, well limitations upscaling biological approaches employed overcome challenges.

Язык: Английский

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Critical review of microplastic in membrane treatment plant: Removal efficiency, environmental risk assessment, membrane fouling, and MP release

Chemical Engineering Journal, Год журнала: 2023, Номер 480, С. 148052 - 148052

Опубликована: Дек. 12, 2023

Язык: Английский

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Application of advanced oxidation processes for the removal of micro/nanoplastics from water: A review

Chemosphere, Год журнала: 2023, Номер 346, С. 140636 - 140636

Опубликована: Ноя. 8, 2023

Язык: Английский

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Biodegradation of plastics by white-rot fungi: A review

The Science of The Total Environment, Год журнала: 2023, Номер 901, С. 165950 - 165950

Опубликована: Авг. 1, 2023

Plastic pollution is one of the most environmental problems in last two centuries, because their excessive usage and rapidly increasing production, which overcome ability natural degradation. Moreover, this problem become an escalating issue caused by inadequate disposal, ineffective or nonexistent waste collection methods, a lack appropriate measures to deal with problem, such as incineration landfilling. Consequently, plastic wastes have so ubiquitous accumulated environment impacting ecosystems wildlife. The above, enhances urgent need explore alternative approaches that can effectively reduce without causing harsh consequences. For example, white rot fungi are promising problem. These produce ligninolytic enzymes able break down molecular structures plastics, making them more bioavailable allowing degradation process, thereby mitigating accumulation. Over years, several research studies focused on utilization degrade plastics. This review presents summary biochemistry function enzymes. It also includes different involving plastic, enzymes, techniques used obtained results. Also, highlights significance pre-treatments study blends fibers metallic ions, shown higher levels Finally, it raises limitations biotechnological processes prospects for future studies.

Язык: Английский

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Are you drowned in microplastic pollution? A brief insight on the current knowledge for early career researchers developing novel remediation strategies

The Science of The Total Environment, Год журнала: 2024, Номер 918, С. 170382 - 170382

Опубликована: Фев. 1, 2024

Microplastics (MPs) composed of different polymers with various shapes, within a vast granulometric distribution (1 μm - 5 mm) and wide variety physicochemical surface bulk characteristics spiral around the globe, atmospheric, oceanic, cryospheric, terrestrial residence times, while interacting other pollutants biota. The challenges microplastic pollution are related to complex relationships between generation mechanisms (physical, chemical, biological), their properties, interactions microorganisms, changes in properties aging, small sizes that facilitate diffusion transportation air, water, land, biota, thereby promoting ubiquity. Early career researchers (ERCs) constitute an essential part scientific community committed overcoming new ideas innovative perspectives for development remediation technologies. However, because enormous amount information available, it may be difficult ERCs determine complexity this environmental issue. This mini-review aims provide quick updated overview insights help them acquire background needed develop highly physical, biological technologies, as well valorization proposals education awareness campaigns. Moreover, recommendations holistic strategies presented here can propose technologies considering environmental, social, practical dimensions fulfilling current government policies manage plastic waste.

Язык: Английский

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Biodegradation of polyethylene (PE), polypropylene (PP), and polystyrene (PS) microplastics by floc-forming bacteria, Bacillus cereus strain SHBF2, isolated from a commercial aquafarm

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(22), С. 32225 - 32245

Опубликована: Апрель 22, 2024

Язык: Английский

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Nano/micro-plastic, an invisible threat getting into the brain

Chemosphere, Год журнала: 2024, Номер 361, С. 142380 - 142380

Опубликована: Май 18, 2024

Due to weather and working/operational conditions, plastic degradation produces toxic non-biodegradable nano microplastics (N/M-Ps, ranging from 10 nm 5 mm), over time these N/M-Ps have integrated with the human cycle through ingestion inhalation. These N/M-Ps, as serious emerging pollutants, are causing considerable adverse health issues due up-taken by cells, tissue, organs, including brain. It has been proven that can cross blood-brain barrier (via olfactory blood vessels) affect secretion of neuroinflammatory (cytokine chemokine), transporters, receptor markers. Neurotoxicity, neuroinflammation, brain injury, which may result in such scenarios a concern cause disorders. However, related pathways pathogenesis not well-explored but focus upcoming research. Therefore, this editorial, well-organized multidisciplinary research is required explore associated pathogenesis, leading mapping nano-enabled therapeutics acute chronic N/M-P exposure.

Язык: Английский

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Tapping into fungal potential: Biodegradation of plastic and rubber by potent Fungi

The Science of The Total Environment, Год журнала: 2024, Номер 934, С. 173188 - 173188

Опубликована: Май 11, 2024

Plastic polymers are present in most aspects of routine daily life. Their increasing leakage into the environment poses a threat to environmental, animal, and human health. These often resistant microbial degradation predicted remain for tens hundreds years. Fungi have been shown degrade complex considered good candidates bioremediation (biological pollutant reduction) plastics. Therefore, we screened 18 selected fungal strains their ability polyurethane (PU), polyethylene (PE), tire rubber. As proxy plastic polymer mineralization, quantified O2 consumption CO2 production an enclosed biodegradation system providing as sole carbon source. In contrast studies demonstrated that tested fungi attach to, colonize different without any pretreatment plastics absence sugars, which were suggested essential priming process. Functional groups identified by Fourier-transform infrared spectroscopy (FTIR), changes morphology seen light scanning electron microscopy (SEM) used indicators adaptation growth on PU substrate. Thereby, SEM analysis revealed new morphological structures deformation cell wall several when colonizing utilizing this growth. Strains Fusarium, Penicillium, Botryotinia cinerea EN41, Trichoderma high potential PU, rubber, PE. Growing over 90 % was consumed <14 days with 300–500 ppm generated parallel. Our study highlights some efficiently polymers, largely dependent type.

Язык: Английский

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