Leaching of tire particles and simultaneous biodegradation of leachables

Water Research, Год журнала: 2024, Номер 253, С. 121322 - 121322

Опубликована: Фев. 15, 2024

The fate of organic compounds released from tire wear particle (TWP) in the aquatic environment is still poorly understood. This especially true near sources where biotic and abiotic transformation leaching TWP are simultaneous competing processes. To address this knowledge-gap an experiment was performed, allowing for biodegradation (a) during a suspension cryo-milled tread (CMTT) (b) subsequent to leaching. Besides measuring Dissolved Organic Carbon (DOC) content, 19 tire-related chemicals were quantified, non-target screening performed by LC-HRMS. non-inoculated control exhibited DOC up 4 mg g−1, with 700 µg g−1 1,3-diphenylguanidine (DPG) as most prominent compound, followed three benzothiazoles (2-mercaptobenzothiazole (2-MBT), 2-hydroxybenzothiazole (2-OHBT) benzothiazole-2-sulfonic acid (BTSA); 50 each) 4-hydroxydiphenylamine (4-HDPA) (50 g−1). Biodegradation reduced 88% concentration more than 85%. At end hexamethoxymethylmelamine (HMMM) single (18 Non-target showed complex picture. Another 25 products (TPs) N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6-PPD) 44 TPs derivatives related DPG detected solution, which 11 28 present after or formed biodegradation, respectively. Of these 39 derivatives, 31 could be road runoff samples. study provides comprehensive picture leachables particles that environmental relevance. It also outlines additives production use may deserve attention leachables. large extent suggests settling ponds useful treatment option runoff.

Язык: Английский

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A Comprehensive Outlook of Scope within Exterior Automotive Plastic Substrates and Its Coatings

Coatings, Год журнала: 2023, Номер 13(9), С. 1569 - 1569

Опубликована: Сен. 7, 2023

Among non-metal substrate coatings, plastic substrates have certainly asserted themselves as a key market, especially in the automotive industry. The within exterior industries are being diversified and commercialized at rapid pace. Mainly attributed to emergence of electric vehicles, environmental regulations, functional requirements, there is huge scope many opportunities for advancements groundbreaking technologies. above factors led dawn new improved coating materials revolutionizing market. At same time, product innovations ultraviolet (UV)-curable technologies, powder coating, nanotechnologies, several other platforms brought possibility novel systems into picture. This review outlines inherent challenges, progress made thus far, future two significant substrates: thermoplastic polyolefin (TPO) polycarbonate (PC). While former serves historical choice bumpers across globe, latter has captured most research attention recent times lightweight option against glass coatings. A meticulous overview existing literature was conducted summarize approaches with few critical analyses. To surpass challenges equivalent performances, promising studies were also examined, including sustainability aspect.

Язык: Английский

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Generation of environmentally persistent free radicals on photoaged tire wear particles and their neurotoxic effects on neurotransmission in Caenorhabditis elegans

Environment International, Год журнала: 2024, Номер 186, С. 108640 - 108640

Опубликована: Апрель 1, 2024

Tire wear particles (TWP) are a prevalent form of microplastics (MPs) extensively distributed in the environment, raising concerns about their environmental behaviors and risks. However, knowledge regarding properties toxicity these at environmentally relevant concentrations, specifically role persistent free radicals (EPFRs) generated during TWP photoaging, remains limited. In this study, evolution EPFRs on under different photoaging times adverse effects Caenorhabditis elegans were systematically investigated. The process primarily resulted formation reactive oxygen species (O2•−, ⋅OH, 1O2), altering physicochemical TWP. exposure nematodes to 100 μg/L TWP-50 (TWP with time 50 d) led significant decrease locomotory (e.g., head thrashes, body bends, wavelength) neurotransmitter contents dopamine, glutamate, serotonin). Similarly, expression neurotransmission-related genes was reduced exposed TWP-50. Furthermore, addition free-radical inhibitors significantly suppressed TWP-induced neurotoxicity. Notably, correlation analysis revealed negative between levels nematodes. Thus, it concluded that photoaged induce neurotoxicity by affecting neurotransmission. These findings elucidate mechanisms EPFRs, emphasizing importance considering contributions when evaluating risks associated

Язык: Английский

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Tire plastic and road-wear particles on Yujing Expressway in the restoration area of Mu Us Sandy Land: Occurrence characteristics and ecological risk screening

Journal of Hazardous Materials, Год журнала: 2024, Номер 468, С. 133860 - 133860

Опубликована: Фев. 23, 2024

Язык: Английский

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Photoaged tire wear particles hinder the transport of Pb(II) in urban soils under acid rain: Experimental and numerical Investigations

Water Research, Год журнала: 2024, Номер 266, С. 122410 - 122410

Опубликована: Сен. 7, 2024

Язык: Английский

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Navigating the Labyrinth of Polymer Sustainability in the Context of Carbon Footprint

Опубликована: Май 29, 2024

The ubiquitous nature of polymers have led to a widespread demand for sustainable in numerous industrial applications. However, lack well laid out guidelines, product development pathways and certifications resulted lot commotions confusions within the polymer value chain. Herein, meticulous review is conducted on topic sustainability shedding light standards, declarations, biobased-biomass concepts, carbon footprint etc. It critical that companies significantly contribute such efforts lieu market readiness competitive advantages. Any discussion horizon references couple terms/ abbreviations/concepts. In this article, key terminologies concepts related are reviewed with holistic outlook approaches horizon.

Язык: Английский

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Characteristics of tire-road wear particles (TRWPs) and road pavement wear particles (RPWPs) generated through a novel tire abrasion simulator based on real road pavement conditions

The Science of The Total Environment, Год журнала: 2024, Номер 944, С. 173948 - 173948

Опубликована: Июнь 15, 2024

Microparticles such as tire-road wear particles (TRWPs) and road pavement (RPWPs) are generated by the friction between tire tread surface. TRWPs RPWPs on roads dispersed through traffic transferred to rivers seas via runoff accumulate in sediments. However, research generation of both TRWP RPWP has rarely been conducted. In this study, was investigated using a novel abrasion simulator equipped with paved bus tire, their contributions microparticles were examined. Two types model roads, asphalt concrete pavements (AP CP, respectively), applied. from exhibited morphologies very similar those real roads. The rate for CP 2.8 times higher than that AP. particle size distributions peaked at ranges 63-106 μm 212-500 AP respectively. Totals 84 wt% 89 distributed 38-212 106-1000 CP. (TWP) contents total 38-500 21.7 30.0 respectively, decreased decreased. weight TWP TRWP. Contributions 3.6 2.3 contribution increased

Язык: Английский

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Adapting Methods for Isolation and Enumeration of Microplastics to Quantify Tire Road Wear Particles with Confirmation by Pyrolysis GC–MS

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 14, 2025

The complex, varied composition (i.e., rubbers/elastomers, carbon black, fillers, additives, and embedded road materials) wide density range of tire wear particles (TRWPs) present challenges for their isolation identification from environmental matrices. Reliable quantification is important understanding the fate potential adverse effects TRWPs. To address monitoring needs, work adapts a series steps methods commonly applied microplastic analysis single-particle-level enumeration TRWPs samples. We method performance two-stage separation with saturated NaCl sodium polytungstate to isolate sediment matrices, compatibility microrubber reagents used digestion use elasticity heat resistance observations differentiate bitumen particulates, which are visual interference. found that alkaline digestions (NaOH KOH) compatible microrubbers, but hydrogen peroxide hypochlorite can cause lose flatten or break when probed. adapted were dust samples, subset identified was qualitatively confirmed by both scanning electron microscopy pyrolysis-gas chromatography-mass spectrometry. Further, compilation aspect ratio measurements between 63 500 μm (N = 780) isolated urban sediments shows diversity TRWP shapes in environment.

Язык: Английский

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Acid-Cured Norbornylized Seed Oil Epoxides for Sustainable, Recyclable, and Reprocessable Thermosets and Composite Application

ACS Applied Polymer Materials, Год журнала: 2023, Номер 5(3), С. 2230 - 2242

Опубликована: Фев. 27, 2023

Reprocessable and recyclable thermosets were produced from the epoxidized norbornene seed oils (soybean oil linseed oil). The epoxides copolymerized using disulfide-based aromatic carboxylic acid to mold composites. Both neat reprocessed characterized for cross-linking efficiency by dynamic mechanical analysis (DMA), Soxhlet extraction, swelling tests; thermal stability thermogravimetric (TGA); Tg differential scanning calorimetry (DSC). Mechanical properties of also investigated. Further, carbonized biomass sorghum fillers added into system assess their effect on final properties. Increased bio-based content, cost, weight savings introduced virtue filler addition. Lastly, glass-fiber-reinforced composites molded, evaluated an impact tester a universal testing machine (UTM) DMA TGA, respectively. It was noticed that higher functionalization resulted in reactivity performance like density, stability, tensile modulus. Nonfilled epoxy systems comparison sorghum-filled showed enhanced thermomechanical Chemical recycling reprocessing abilities these highly materials research thus demonstrates systems' possible use environmentally friendly, sustainable, lightweight

Язык: Английский

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Impact of Pristine and Aged Tire Wear Particles on Ipomoea aquatica and Rhizospheric Microbial Communities: Insights from a Long-Term Exposure Study

Environmental Science & Technology, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 19, 2024

Tire wear particles (TWPs), generated from tire abrasion, contribute significantly to environmental contamination. The toxicity of TWPs organisms has raised significant concerns, yet their effects on terrestrial plants remain unclear. Here, we investigated the long-term impact pristine and naturally aged water spinach (Ipomoea aquatica) its rhizospheric soil. results indicated that natural aging reduced TWPs, as evidenced by decreased levels polycyclic aromatic hydrocarbons (PAHs) in soil themselves. Consequently, were found enhance plant growth chlorophyll content, whereas increased stress. Furthermore, improved organic matter (SOM) total carbon (TOC), thereby boosting microbial enzymes involved nitrogen cycling. Metabolomic analysis revealed upregulated key pathways related metabolism, enhancing stress responses. Additionally, rhizosphere bacterial diversity was higher under favoring nutrient-cycling taxa such Acidobacteriota Nitrospirota. Pristine may lead overproliferation certain dominant species, reducing soil, which could ultimately compromise health. These findings a deeper understanding mechanisms underlying TWP highlight necessity for further research across various species over different exposure durations comprehensive risk assessment.

Язык: Английский

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