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61,005 resultsShowing papers similar to Electrochemical-oxidative dualism: Decoupling the acute effects of lake water-aged tire wear particles on periphytic biofilm-mediated denitrification
ClearToxic effects of environmentally persistent free radicals (EPFRs) on the surface of tire wear particles on freshwater biofilms: The alleviating role after sewage-incubation-aging
Researchers investigated how tire wear particles affect freshwater biofilms, which are communities of microorganisms that play important roles in aquatic ecosystems. They found that reactive chemical compounds on the surface of fresh tire particles caused significant toxicity, reducing photosynthesis and biological activity in the biofilms. The study suggests that aging in sewage environments reduces the toxicity of tire wear particles by breaking down these harmful surface chemicals.
Effects of tire wear particles on freshwater bacterial-fungal community dynamics and subsequent elemental cycles using microcosms.
Researchers conducted freshwater microcosm experiments to assess how tire wear particles (TWPs) affect bacterial-fungal community dynamics and biogeochemical cycles in rural versus urban lake sediments and overlying water. They found TWPs altered microbial composition more strongly in water than sediment and increased bacteria-fungi network complexity, with cascading effects on nitrogen and carbon cycling.
Aging increases the particulate- and leachate-induced toxicity of tire wear particles to microalgae.
Researchers found that environmental aging of tire wear particles increases their toxicity to marine microalgae beyond that of fresh particles, with aged particles triggering greater oxidative stress, photosynthesis disruption, and metabolic changes in the algae.
Aging, characterization and sorption behavior evaluation of tire wear particles for tetracycline in aquatic environment
Researchers aged tire wear particles using UV weathering and chemical oxidation and studied how aging affects their sorption of tetracycline antibiotics, finding that weathering significantly alters surface chemistry and increases the capacity of tire particles to adsorb and potentially transport pharmaceutical contaminants.
Impact of Tire-Derived Microplastics on Microbiological Activity of Aerobic Granular Sludge
This study examined how tire wear particle microplastics — a ubiquitous contaminant in urban stormwater — affect the bacteria responsible for removing nitrogen from wastewater in biological treatment reactors. At increasing tire particle concentrations, bacteria that convert ammonia to nitrate became more active, while bacteria that complete denitrification (converting nitrogen to harmless gas) were significantly suppressed. This imbalance could cause wastewater treatment plants to release more nitrogen into receiving waterways, potentially worsening nutrient pollution and algal blooms. The findings underscore a previously underappreciated way that tire microplastics can impair wastewater treatment infrastructure.
Adsorption of emerging micropollutants on tire wear particles
Researchers examined how tire wear particles (TWP) adsorb two common water pollutants—bisphenol A and 1H-benzotriazole—and how aging processes (photo, chemical, biological) affect that adsorption. TWP showed stronger adsorption of bisphenol A than benzotriazole, and aging altered sorption behavior, highlighting TWP as a significant carrier of micropollutants in aquatic environments.
A critical review of tire wear particles aging and ecotoxicological consequences in terrestrial environments: Insights into environmentally persistent free radicals
This review synthesizes evidence on how tire wear particles age in terrestrial environments and the resulting ecological consequences. Researchers found that UV-induced aging generates environmentally persistent free radicals and reactive oxygen species that amplify soil toxicity, while biodegradation may reduce some risks. The study highlights that characterizing aged tire wear particles remains difficult due to their compositional complexity and calls for standardized analytical methods.
Effects of tire wear particles with and without photoaging on anaerobic biofilm sulfide production in sewers and related mechanisms
Researchers investigated how tire wear particles, both fresh and photoaged, affect sulfide production in sewer biofilms, finding that photoaging altered particle surface properties and leachate composition, influencing microbial sulfide generation in anaerobic sewer environments.
Aging behaviors intensify the impacts of microplastics on nitrate bioreduction-driven nitrogen cycling in freshwater sediments
This study found that microplastics that have aged in the environment have stronger effects on nitrogen cycling in lake sediments than fresh microplastics, significantly altering how bacteria process nitrogen. These disruptions to natural nutrient cycles in freshwater systems could affect water quality and the broader food web that ultimately connects to human food sources.
Aging of Tire Particles in Deep-Sea Conditions: Interactions between Hydrostatic Pressure, Prokaryotic Growth and Chemical Leaching.
This laboratory study simulated deep-sea conditions to investigate how high hydrostatic pressure and prokaryotic biofilms affect tire particle aging. Deep-sea pressure and microbial colonization altered the physical and chemical properties of tire particles, with implications for their long-term fate as a microplastic sink.
Determination of aerobic and anaerobic biological degradability of waste tyres
Researchers examined the aerobic and anaerobic biodegradability of waste tire rubber in aquatic environments, finding very limited biological degradation under both conditions, confirming that tire-derived particles persist as long-term environmental contaminants.
“Tire plastisphere” in aquatic ecosystems: Biofilms colonizing on tire particles exhibiting a distinct community structure and assembly compared to conventional plastisphere
This study examined biofilm communities (the "tire plastisphere") forming on tire particles in aquatic ecosystems, characterizing the microorganisms that colonize rubber particles and assessing whether the plastisphere community differs from surrounding water or sediment microbiomes. Tire particles hosted distinct biofilm communities enriched in potentially pathogenic and hydrocarbon-degrading bacteria.
Environmental aging and biodegradation of tire wear microplastics in the aquatic environment
Researchers investigated the environmental aging and biodegradation of tire wear microplastics in freshwater over 12 weeks, finding that biofilm formation and chemical changes occurred but complete biodegradation was limited under the studied conditions.
Tire wear particles drive size-dependent loss of freshwater bacterial biofilm diversity
Researchers placed tire wear particles of different sizes and types in the River Rhine for four weeks and studied the bacterial communities that formed on them. They found that tire wear particles supported significantly less diverse bacterial communities compared to natural river sediment, with larger particles reducing diversity even further. The study reveals that the widespread release of tire wear particles into freshwater systems may be reshaping microbial ecosystems by favoring certain specialized bacteria over others.
Biofilm-Colonized versus Virgin Black Microplastics to Accelerate the Photodegradation of Tetracycline in Aquatic Environments: Analysis of Underneath Mechanisms
Researchers found that biofilm-colonized tire wear particles accelerated the photodegradation of tetracycline in aquatic environments compared to virgin particles, revealing how microbial biofilms on microplastics can alter contaminant fate.
A study on the aquatic degradation of tire wear particles: Impact of environmental factors and material formulations
This study assessed how tire wear particles degrade in freshwater environments under varying environmental conditions including UV radiation and water chemistry. The degradation process alters particle properties in ways that may increase toxicity to aquatic organisms.
A comparative analysis of the chemical composition and biofilm formation on tire wear particles from six different tire types
Researchers analyzed the chemical composition and biofilm communities forming on tire-wear particles compared to other microplastic types, finding that tire wear particles support distinct microbial assemblages. The unique surface chemistry of tire wear particles may promote the attachment of pathogens and toxin-producing microorganisms.
Succession-driven potential functional shifts in microbial communities in the tire-plastisphere: Comparison of pristine and scrap tire
Researchers incubated pristine and scrap tire microplastics alongside wood particles in a lake environment for 60 days and used amplicon and metagenome sequencing to characterise succession-driven structural and functional shifts in microbial communities colonising the tire-plastisphere.
Tire wear particles in different water environments: occurrence, behavior, and biological effects—a review and perspectives
This review examines tire wear particles, a major but often overlooked source of microplastics in water environments. Tire particles release toxic chemicals as they break down in water and can harm aquatic organisms, but most research has focused only on the chemical leachate rather than the particles themselves. Since tire wear contributes a large share of total microplastic pollution, understanding its full impact on water ecosystems and the food chain is important for human health.
Microbial community shifts induced by plastic and zinc as substitutes of tire abrasion
Researchers tested the effects of plastic particles and zinc separately on a freshwater microeukaryotic community using high-throughput 18S rRNA sequencing, using these as surrogates for tire wear particle components. Both plastic and zinc individually altered community composition at environmentally realistic concentrations, with plastic causing more pronounced shifts in community structure.
The difference between tire wear particles and polyethylene microplastics in stormwater filtration systems: Perspectives from aging process, conventional pollutants removal and microbial communities
Researchers compared how tire wear particles and polyethylene microplastics behave in stormwater filtration systems used to treat urban runoff. They found that tire wear particles leached more toxic chemicals and supported different microbial communities than conventional microplastics, leading to distinct effects on pollutant removal. The study highlights that tire wear particles deserve separate consideration from other microplastics when designing stormwater treatment infrastructure.
Effects of microplastic biofilms on nutrient cycling in simulated freshwater systems
Polypropylene microplastic biofilms in freshwater microcosms accelerated nitrogen cycling processes including ammonia oxidation and denitrification, and temporarily accumulated phosphorus before releasing it as biofilms matured and broke apart. The results demonstrate that microplastic-associated biofilms actively alter nutrient dynamics in freshwater systems, with potential consequences for water quality.
Aging-mediated selective adsorption of antibiotics by tire wear particles: Hydrophobic and electrostatic interactions effects
Tire wear particles (a major form of microplastic pollution on roads) become more porous and adsorptive after aging through freeze-thaw cycles or ozone exposure, increasing their capacity to carry certain antibiotics by up to 28-fold for fluoroquinolones. However, the same aging process reduces adsorption of sulfonamide and tetracycline antibiotics, reflecting how the chemistry of both the particle and the antibiotic interact. This shows that weathered tire particles on roadways and in waterways can act as vehicles for antibiotic transport, with implications for antibiotic resistance spread in the environment.
Delivery rate alters the effects of tire wear particles on soil microbial activities
Researchers examined how different delivery rates of tire wear particles affect soil microbial activity, since precipitation transports these particles from roads to adjacent soils at varying intensities. The study found that delivery rate significantly alters the magnitude of tire wear particle effects on soil microbial communities.