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61,005 resultsShowing papers similar to Inhibitory effects of microplastics on the oxidative degradation of phenanthrene during advanced oxidation processes: A kinetic and DFT study
ClearInsight into the adsorption behaviors and bioaccessibility of three altered microplastics through three types of advanced oxidation processes
Scientists found that when common microplastics (polyethylene, polypropylene, and polystyrene) undergo water treatment processes like UV or chemical oxidation, their surfaces change in ways that make them better at absorbing harmful pollutants. The treated microplastics also released more chemicals during simulated human digestion, meaning people who ingest these particles may absorb more toxins from them. This is concerning because most microplastics in drinking water have already been through some form of water treatment.
Impact of microplastics on 4-chlorophenol degradation via MnOOH-catalyzed periodate activation
Researchers found that microplastics interfere with the MnOOH-catalyzed periodate oxidation process used to degrade the toxic phenolic compound 4-chlorophenol in water, with MP surfaces adsorbing both the catalyst and contaminant in ways that reduce treatment efficiency.
Application of advanced oxidation processes for the removal of micro/nanoplastics from water: A review
This review summarizes methods for breaking down and removing microplastics and nanoplastics from water using advanced chemical processes that generate powerful cleaning agents like hydroxyl radicals. While these methods can shrink and partially degrade plastic particles, they cannot yet fully break them down, meaning some residue remains. The research is important for developing better water treatment systems that could reduce human exposure to microplastics through drinking water.
Advances in chemical removal and degradation technologies for microplastics in the aquatic environment: A review
This review summarizes recent advances in chemical methods for breaking down microplastics in water, comparing the effectiveness of various techniques including advanced oxidation processes. Developing better ways to destroy microplastics in water is important for public health because current wastewater treatment plants cannot fully remove these persistent particles before water reaches consumers.
Revealing the Key Impact of Microplastic-Derived Dissolved Organic Matter Properties on Aromatic Pollutant Adsorption and the Underlying Mechanisms
Researchers examined how dissolved organic matter released from different types of microplastics affects the adsorption of aromatic pollutants like bisphenol A and naphthalene. The study found that microplastic-derived dissolved organic matter substantially suppressed the ability of treatment materials to capture these pollutants, revealing an underappreciated way that microplastic degradation products can worsen water contamination.
Degradation of microplastic in water by advanced oxidation processes
This review covers advanced methods for breaking down microplastics in water using powerful chemical reactions and light-activated catalysts that can degrade plastic particles into less harmful substances. Developing effective ways to destroy microplastics in water is critical for human health because conventional water treatment plants do not fully remove these particles from drinking water sources.
Effects of UV-based oxidation processes on the degradation of microplastic: Fragmentation, organic matter release, toxicity and disinfection byproduct formation
This study examined how UV-based water treatment processes break down microplastics, finding that while the treatments fragment the plastics into smaller pieces, they also release potentially toxic organic compounds. The smaller fragments and released chemicals may actually pose greater risks than the original microplastics. This is an important finding because it suggests that some water purification methods could unintentionally make microplastic pollution more hazardous to human health.
Advanced oxidation processes for microplastics degradation: A recent trend
This review examined advanced oxidation processes as technologies for breaking down microplastics, including UV treatment, ozone, photocatalysis, and plasma methods. Researchers found that while these approaches can effectively degrade various types of microplastics, the breakdown mostly occurs on particle surfaces, and complete removal remains challenging. The study also warns that partially degraded microplastics may actually become more effective at absorbing and carrying other pollutants.
Ozone-mediated breakdown of microplastics in aqueous environments
Researchers examined how ozone-based advanced oxidation processes break down microplastics in water treatment settings. They found that while ozone can degrade certain plastics, the effectiveness varies depending on particle size, polymer type, and treatment conditions, and the process may generate nanoplastic byproducts. The study highlights both the promise and limitations of ozone treatment as a strategy for removing microplastics from wastewater.
Macroscopic and microscopic investigation of adsorption mechanisms of phenanthrene and its derivatives on polyacrylonitrile microplastics
This study investigated how polyacrylonitrile (PAN) microplastics adsorb phenanthrene and four of its chemical derivatives from water, finding that the type of functional group on the pollutant strongly controls how much and how fast it sticks to the plastic. Substituted forms with nitro or chlorine groups adsorbed more strongly than plain phenanthrene. This matters because microplastics can act as carriers of toxic organic pollutants in the environment, and understanding which pollutants bind most readily helps predict contamination risks in aquatic ecosystems.
Transformation of microplastics by oxidative water and wastewater treatment processes: A critical review
This review evaluates the potential of various oxidation processes used in water and wastewater treatment to transform and degrade microplastics. Researchers found that most previous studies used chemical doses far exceeding what is applied in real treatment plants, meaning the observed microplastic degradation is unlikely to occur under practical conditions. The study cautions that discharging oxidized microplastics in treated water may pose additional environmental risks, including the release of harmful organic compounds.
Pre-oxidization-induced change of physicochemical characteristics and removal behaviours in conventional drinking water treatment processes for polyethylene microplastics
Researchers investigated how pre-oxidation treatments alter the physicochemical properties of polyethylene microplastics and found that oxidation changed surface characteristics and influenced removal efficiency during conventional drinking water treatment processes.
Microplastic PropertiesGovern the Photodegradationof Sorbed Anthracene in Aquatic Environments
Researchers investigated how microplastic properties govern the photodegradation of anthracene, a model hydrophobic organic contaminant, in aquatic environments, finding that polymer type, surface characteristics, and aging state significantly influenced degradation rates. The study highlights that microplastics can both facilitate and inhibit contaminant photodegradation depending on their physicochemical properties.
Exploring the Role of Advanced Oxidation Processes in Microplastics Research: A Systematic Literature Review
This review of 84 studies found that certain chemical treatments can break down microplastics (tiny plastic particles) in the environment, but these plastics are surprisingly tough to destroy completely. The research shows that while some treatments can change how microplastics look and behave, fully eliminating them requires much stronger methods that aren't widely available yet. This matters because microplastics are found everywhere—from our drinking water to our food—and understanding how to remove or break them down could help reduce our exposure to these potentially harmful particles.
Advanced oxidation in the treatment of microplastics in water: A Review
Researchers reviewed how advanced oxidation processes (AOPs) — chemical methods that generate highly reactive molecules — can break down microplastics in water rather than simply filtering them out. Unlike traditional treatment that just moves microplastics around, some AOPs can fully convert plastic fragments into carbon dioxide and water, making them a promising frontier for actual microplastic destruction in water treatment.
Surface functional group dependent enthalpic and entropic contributions to molecular adsorption on colloidal microplastics
This chemistry study measured how different organic molecules (charged and neutral) stick to the surface of various microplastic particles in water, finding that the plastic's surface chemistry strongly influences the strength and nature of these interactions. The work reveals that both electrostatic attraction and water structure at the plastic surface play a role in determining what contaminants microplastics can carry. This matters because microplastics act as "carriers" for other pollutants, and understanding the binding chemistry helps predict which toxins hitchhike with plastics into ecosystems and organisms.
Engineering functional nanocomposites for enhanced AOP-mediated microplastic mineralization: From mechanistic insights to water remediation strategies
This review examines how advanced oxidation processes such as photocatalysis, Fenton reactions, and electrocatalysis can be used to break down microplastics in water. Researchers evaluated the strengths and limitations of each technique and explored how functional nanomaterials can enhance degradation performance. The study highlights promising directions for developing scalable water treatment solutions to address microplastic contamination.
The effect of Ozonation on the chemical structure of microplastics
Ozone treatment of microplastics in water caused oxidative changes to polymer surfaces including carbonyl group formation and surface cracking, which altered hydrophobicity and potentially increased the capacity of treated particles to adsorb contaminants, suggesting that ozonation in water treatment may chemically transform rather than eliminate microplastic hazards.
Surface deoxygenation via electron beam/oxidant treatment: A novel pathway to reduce pollutant adsorption on aged microplastics
Researchers developed a novel electron beam combined with oxidant treatment to artificially age microplastic surfaces, achieving rapid generation of oxygen-containing functional groups that enhanced pollutant adsorption capacity while also initiating plastic degradation.
Analysis of the Adsorption Behavior of Phenanthrene on Microplastics Based on Two-Dimensional Correlation Spectroscopy
Using advanced infrared spectroscopy, this study examined how microplastics made from polypropylene, polystyrene, and PVC adsorb phenanthrene, a common toxic hydrocarbon pollutant, finding that the bonding is primarily chemical rather than physical. This means microplastics in the environment can act as carriers that tightly bind and potentially concentrate hazardous aromatic chemicals, increasing the risk of delivering these toxins to organisms that ingest the particles.
Recent advances in mechanistic insights into microplastics mitigation strategies via emerging advanced oxidation processes: Legislation, challenges, and future direction
This review examines advanced oxidation processes as a promising approach for breaking down microplastics in water, covering techniques like photocatalysis, electrochemical oxidation, and ozonation. Researchers analyzed how these methods break apart plastic polymer chains at the molecular level and identified key limitations that must be overcome. The study also discusses current plastic pollution legislation and emphasizes the need for stronger regulatory frameworks alongside technological solutions.
Advanced oxidation processes for the elimination of microplastics from aqueous systems: Assessment of efficiency, perspectives and limitations
This review evaluates advanced oxidation processes as a strategy for breaking down microplastics in water systems, comparing techniques such as photocatalysis, Fenton reactions, and ozonation. Researchers found that while these methods show promise for degrading microplastics into smaller, less harmful molecules, challenges remain in scaling them for practical use. The study identifies key limitations and suggests directions for making these technologies more efficient and applicable to real-world water treatment.
The effect of water ozonation in the presence of microplastics on water quality and microplastics degradation
Researchers tested how ozone-based water treatment affects microplastic particles and found that the process can break down the plastics, releasing harmful chemicals like phthalic acid esters into the treated water. Polyethylene was the most susceptible to degradation, with surface area losses up to about 27%. The study suggests that water treatment plants may unintentionally worsen water quality when microplastics are present during ozonation.
Micro- and nanoplastics removal from water and solid matrices: Technologies, challenges, and future perspectives
Researchers reviewed a decade of research on micro- and nanoplastic removal technologies across water and solid matrices, finding that conventional water treatment achieves over 80% microplastic removal but transfers most particles to sludge rather than degrading them, while advanced oxidation processes show strong degradation potential under controlled but not yet real-world conditions.