Migration and remediation of typical contaminants in soil and groundwater: A state of art review

Land Degradation and Development, Journal Year: 2024, Volume and Issue: 35(8), P. 2700 - 2715

Published: April 3, 2024

Abstract Soil and groundwater contamination has always been a global concern. Contaminants are migrated transformed in the soil environments, which turn pose potential environmental risks to humans. This paper describes four typical contaminants, including heavy metals, polycyclic aromatic hydrocarbons, microplastics, perfluorinated polyfluoroalkyl substances. Based on systematic summary of sources, hazards, migration behaviors these various existing remediation methods analyzed, advantages disadvantages different discussed. Finally, future research prospects described, significance study contaminant subsurface environment is emphasized. can help provide theoretical technical support for removal further improve rate actual sites.

Language: Английский

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Synthetic Microfibers: An Urban Emerging Pollutant Demanding for Sustainable Environmental Solutions

Published: Jan. 1, 2024

Language: Английский

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Remote Mountainous Area Inevitably Becomes Temporal Sink for Microplastics Driven by Atmospheric Transport

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: July 16, 2024

Atmospheric transport drives the widespread distribution of microplastic (MP) in various ecosystems, posing a growing potential threat to environmental safety and human health. Understanding source fate atmospheric MPs is thus crucial constrain MP's exposure. However, source–sink dynamics MPs, especially remote areas, are uncertain, their routes have yet be identified. Here, we conducted 13-month monitoring uninhabited area Mount Taibai, estimated risk MP exposure environment, modeled trajectory analyze transportation. We first found that as many 15 polymer types whose shapes mainly include fiber, fragments, films, granules, maintained abundance (0.7 0.3 particle/m3 for PM10 PM2.5, respectively) mountain atmosphere at respirable sizes. It worth noting assessment results comprehensively consider influences morphological characteristics suggest level exhibits even this mountainous not disturbed by frequent activities. Backward trajectories revealed likely sparsely populated Liupan Mountains Qinling short-range transport. Further, airflow-based analysis indicated emission southern Xianyang longer-range were directionally transported Taibai through under premise stable climate geographical conditions. These inevitably occur areas driven transport, persistently bearing impact This study reveals impacts ecosystem.

Language: Английский

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Extraction and analytical methods of microplastics in wastewater treatment plants: Isolation patterns, quantification, and size characterization techniques

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 318, P. 100399 - 100399

Published: April 1, 2024

Microplastics are pollutants formed from fragmented plastics and also industrially manufactured for personal care cosmetic products. They range 1 µm to 5 mm ubiquitous in the environment due their tiny size, lightweight, wide applications. Ecotoxicological studies have shown that they can induce multiple harmful effects on exposed organisms humans. Wastewater treatment plants (WWTPs) drawn interest of researchers regulatory bodies worldwide as a point source microplastics discharge environment. In absence standardized methodology, microplastic monitoring WWTPs has been marked by distinct variations sample processing analytical procedures which limit comparison results. This review provides detailed analysis methods patterns, analytical, size characterization, quantification WWTPs. According procedural steps extraction reported reviewed studies, 12 patterns three categories approaches (single, dual, multiple) were identified. quantified using gravimetry method, mass sub-sample method (based extrapolation) with latter being most applied technique. Microplastic characterization accomplished two main methods: sieve-based technique computing-based

Language: Английский

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In vitro cell-transforming potential of secondary polyethylene terephthalate and polylactic acid nanoplastics

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 469, P. 134030 - 134030

Published: March 13, 2024

Continuous exposure to plastic pollutants may have serious consequences on human health. However, most toxicity assessments focus non-environmentally relevant particles and rarely investigate long-term effects such as cancer induction. The present study assessed the carcinogenic potential of two secondary nanoplastics: polyethylene terephthalate (PET) generated from bottles, a biodegradable polylactic acid material, respective examples environmentally existing new bioplastics. Pristine polystyrene nanoplastics were also included for comparison. A broad concentration range (6.25 – 200 μg/mL) each nanoplastic was tested in both initiation promotion conditions regulatory assessment-accepted vitro Bhas 42 cell transformation assay. Parallel cultures allowed confirmation efficient cellular internalisation three nanoplastics. Cell growth enhanced by assay, PET conditions. Moreover, number transformed foci significantly increased only highest which showed dose-dependency, indicating that nano can act non-genotoxic tumour promotor. Together, these findings support risk assessment raise concerns regarding whether real-life co-exposure other environmental result synergistic capacities. Secondary (NPLs) waste degradation bioaccumulate tissues cause cancer. Currently, information NPL carcinogenicity remains scarce. By using we first time NPLs, bioplastic, widely spread petroleum-based alternative, respectively. Notably, accelerated bioplastics has been associated with an release NPLs into environment. data will serve plastics.

Language: Английский

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Advanced analytical techniques for assessing and detecting microplastic pollution in water and wastewater systems

Environmental Quality Management, Journal Year: 2024, Volume and Issue: 34(1)

Published: March 11, 2024

Abstract The current study focuses on the sources and formations of microplastics (MPs) in receiving environments, addressing various analytical methods used for detection characterization MPs water wastewater, including particle size distribution analysis, FTIR, Raman, SEM‐EDS, thermo (Pyro GC‐MS, TGA‐MS, TED‐GC‐MS, TGA‐SPE/TDS‐GC‐MS) combine techniques (Tagging method, Liquid chromatography, SEM dispersive X‐ray spectrometer). fills a gap literature by evaluating advantages limitations advanced methods, addition to commonly like SEM, providing perspective other significant approaches. By examining comparing different identify detect wastewater research guides scientists making informed choices when selecting specific method. A better understanding these will inform future facilitate more effective management potential environmental impacts human health risks. This also contributes significantly preserving resources, health, establishing sustainable environment encouraging generation actionable information assess risks develop strategies reducing their presence.

Language: Английский

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Combined toxicity of polyvinyl chloride microplastics and copper to marine jacopever (Sebastes schlegelii)

Marine Environmental Research, Journal Year: 2024, Volume and Issue: 199, P. 106598 - 106598

Published: June 8, 2024

Language: Английский

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Effects of Microplastic Accumulation on Neuronal Death After Global Cerebral Ischemia

Cells, Journal Year: 2025, Volume and Issue: 14(4), P. 241 - 241

Published: Feb. 7, 2025

Brain ischemia, a condition in which the brain is deprived of blood flow, can lead to stroke due blocked or unstable vessels. Global cerebral ischemia (GCI), characterized by an interruption deprives oxygen and nutrients, producing reactive species (ROS) that trigger cell death, kills nerve cells. Microplastics (MPs), tiny environmental pollutants, enter human body through contaminated food, water, disposable items, cosmetics, more. Once brain, MPs increase neuroinflammation overstimulating inflammatory factors such as microglia. also damage neurons scratching myelin microtubules, slowing signal transduction, causing cognitive impairment, leading neuronal death. Furthermore, microtubule may result release phosphorylated tau proteins, potentially linked Alzheimer's disease. We hypothesized could exacerbate destruction after GCI, increased To test this hypothesis, we administered (0.5 µm) orally at dose 50 mg/kg before inducing GCI. Staining techniques Fluoro-Jade B (FJB), ionized calcium-binding adaptor molecule 1 (Iba-1), cluster differentiation 68 (CD68), basic protein (MBP), microtubule-associated 2 (MAP2) were used, along with Western blot analysis for interleukin-6 (IL-6), TNF-α, tau-5, phospho-tau (S396) evaluate effects on neuroinflammation, destruction. The results showed MP accumulation significantly disruption, death GCI-MP group compared GCI-vehicle group. Therefore, study suggests daily life contribute exacerbation disease, severe

Language: Английский

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Physicochemical and microbial treatments for plastics, microplastics, and nanoplastics

Environmental Development, Journal Year: 2025, Volume and Issue: unknown, P. 101181 - 101181

Published: Feb. 1, 2025

Language: Английский

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Recent advances in the detection of microplastics in the aqueous environment by electrochemical sensors: A review

Marine Pollution Bulletin, Journal Year: 2025, Volume and Issue: 214, P. 117695 - 117695

Published: Feb. 22, 2025

Language: Английский

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