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20 resultsShowing papers similar to Insight into the dynamic transformation properties of microplastic-derived dissolved organic matter and its contribution to the formation of chlorination disinfection by-products
ClearUnveiling the optical and molecular characteristics of aging microplastics derived dissolved organic matter transformed by UV/chlor(am)ine oxidation and its potential for disinfection byproducts formation
Researchers studied how UV light and common water disinfection chemicals break down microplastics in water and found that different treatment methods produce different types of dissolved organic matter from the plastic. Some treatment combinations, particularly UV with chlorine, created byproducts that could form harmful disinfection byproducts when water is later chlorinated. This is important because it means water treatment processes might unintentionally create new toxic compounds from the microplastics already present in water.
Effects of UV light on physicochemical changes in thermoplastic polyurethanes: Mechanism and disinfection byproduct formation
Researchers examined how UV light exposure changes the properties of thermoplastic polyurethane microplastics in water and whether those changes affect the formation of harmful disinfection byproducts during water chlorination. They found that UV exposure broke the plastic into smaller fragments and released soluble chemicals that significantly increased byproduct formation after chlorination. The findings suggest that aging microplastics in water systems could contribute to the creation of potentially harmful chemicals during standard water treatment.
UV aging of microplastic polymers promotes their chemical transformation and byproduct formation upon chlorination
Researchers studied how UV aging of different microplastic polymers affects their behavior during water chlorination treatment. They found that UV aging significantly increased the reactivity of polyamide and polyester microplastics, promoting the release of harmful organic compounds and the formation of disinfection byproducts by more than 10-fold. The study reveals that weathered microplastics in drinking water systems may generate more toxic byproducts during standard chlorination than their pristine counterparts.
Characteristics of microplastic polymer-derived dissolved organic matter and its potential as a disinfection byproduct precursor
UV irradiation caused polypropylene and polyethylene microplastics to leach dissolved organic matter into water, producing low-molecular-weight compounds that could react with chlorine during water treatment to form trihalomethanes, a known class of disinfection byproducts and carcinogens. The findings suggest that microplastics in source water could be a previously unrecognized precursor to harmful disinfection byproducts.
Effects of microplastics on DBPs formation under the chlorination of natural organic matters
Researchers investigated how microplastics affect disinfection byproduct formation during chlorination of natural organic matter in water treatment, finding that the presence of microplastics can influence the generation of potentially harmful DBPs.
Potential disinfection byproducts-related risks to drinking water? Molecular insights into the dissolved organic matter from photodegradation of polyethylene microplastics
This study analyzed the dissolved organic matter released during photodegradation of polyethylene microplastics, finding that sunlight exposure generates complex organic compounds that could act as precursors to disinfection byproducts in drinking water treatment. The results highlight an underappreciated pathway by which microplastics may affect drinking water safety.
Insight into the chemical transformation and organic release of polyurethane microplastics during chlorination
Scientists investigated what happens to polyurethane microplastics during water chlorination, a standard step in water treatment. They found that chlorination breaks down the plastic surface and releases organic chemicals, especially from UV-weathered particles, which produced significantly more leached compounds. The findings suggest that water treatment processes themselves may inadvertently release harmful byproducts from microplastics.
Impact of non-aged and UV-aged microplastics on the formation of halogenated disinfection byproducts during chlorination of drinking water and its mechanism
Researchers investigated how both new and UV-aged microplastics affect the formation of halogenated disinfection byproducts during chlorine treatment of drinking water. They found that non-aged microplastics reduced byproduct formation by adsorbing organic precursors, while UV-aged microplastics had a much smaller reduction effect because they release organic compounds that offset adsorption. The study reveals that environmental aging of microplastics changes their impact on drinking water treatment chemistry in important ways.
Insight into the effect of UVC-based advanced oxidation processes on the interaction of typical microplastics and their derived disinfection byproducts during disinfection
Scientists found that UV-based water treatment processes, while intended to clean drinking water, caused microplastics to release more organic matter and form more disinfection byproducts during chlorination. Up to 42% of the toxic byproducts formed were absorbed back onto the microplastic surfaces, creating contaminated particles. This concerning finding suggests that some common water treatment methods could unintentionally make microplastic contamination in drinking water more hazardous.
Volatile organic compounds generation pathways and mechanisms from microplastics in water: Ultraviolet, chlorine and ultraviolet/chlorine disinfection
Researchers examined how UV, chlorine, and combined UV/chlorine disinfection treatments cause microplastics to release volatile organic compounds, identifying distinct degradation pathways for polypropylene, polystyrene, and PVC that generate diverse chemical byproducts in treated water.
Leaching of organic matters and formation of disinfection by-product as a result of presence of microplastics in natural freshwaters
Researchers found that microplastics leach dissolved organic carbon into freshwater, and when combined with chlorine disinfection, this leached material promotes the formation of disinfection byproducts like chloroform in drinking water treatment.
Leaching of organic matter from microplastics and its role in disinfection by-product formation
Researchers found that microplastics leach organic matter into water that subsequently acts as a precursor for disinfection by-products during chlorination, with polystyrene MPs generating the most leachate and producing the most by-products compared to polyethylene MPs.
Transformation of dissolved organic matter leached from biodegradable and conventional microplastics under UV/chlorine treatment and the subsequent effect on contaminant removal
This study examined how dissolved chemicals leaching from both biodegradable and conventional microplastics behave during UV/chlorine water treatment. The treatment changed the chemical properties of the leached substances and actually inhibited the breakdown of a common antibiotic pollutant. The findings suggest that microplastic-derived chemicals in water could interfere with standard water purification processes, potentially reducing their effectiveness.
Transformation of microplastics during UV-LED based water disinfection: Mechanistic insights and environmental implications
Researchers investigated how UV-based water disinfection treatments transform the physical and chemical properties of common microplastics like polystyrene, polyethylene, and PVC. They found that treatment created surface cracks, reduced water repellency, and generated various breakdown compounds, some of which showed toxicity to aquatic organisms. The study highlights that while UV disinfection effectively treats pathogens, it may inadvertently create new environmental risks by altering microplastics in the water supply.
Mechanistic insight into the role of typical microplastics in chlorination disinfection: Precursors and adsorbents of both MP-DOM and DBPs
Chlorination of polypropylene and polystyrene microplastics released dissolved organic matter that formed disinfection by-products, with PS-MPs being more susceptible to chlorination; the study found that even small MPs in drinking water can contribute to DBP precursor loads during treatment.
Microplastics release precursors of chlorinated and brominated disinfection byproducts in water
Researchers investigated whether microplastics leach chemical additives that serve as precursors for chlorinated and brominated disinfection byproducts when exposed to hydrolysis and simulated sunlight, testing seventeen microplastics across seven polymer types and finding that this previously unrecognized pathway poses potential risks to drinking water quality.
Influence of biodegradable plastics on the generation of disinfection byproducts in the chlorination process
This study investigated how biodegradable plastics influence the generation of dissolved organic matter and its downstream effects on water quality and treatment processes. The findings show that biodegradable polymers can release organic compounds that complicate wastewater treatment compared to conventional plastics.
Modifications of ultraviolet irradiation and chlorination on microplastics: Effect of sterilization pattern
Researchers found that both UV irradiation and chlorination used in drinking water treatment alter the surface properties, size distribution, and chemical composition of microplastics, with combined treatments producing greater modifications and potentially increasing the release of plastic additives and adsorbed contaminants.
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.
Characterization of microplastic-derived dissolved organic matter in freshwater: Effects of light irradiation and polymer types
Researchers examined how different types of microplastics release dissolved organic matter into freshwater under light and dark conditions. They found that polypropylene released the most organic compounds after UV exposure, while protein-like substances were the main material released by most plastics in the dark. The study indicates that microplastics may have ongoing, long-term effects on water chemistry and microbial activity in natural water bodies.