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20 resultsShowing papers similar to Leaching of organic matters and formation of disinfection by-product as a result of presence of microplastics in natural freshwaters
ClearLeaching 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.
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.
The fate of microplastics and organic matter leaching behavior during chlorination
Researchers studied how chlorination affects polystyrene and polyethylene microplastics and the organic matter they release, finding that chlorination promoted organic carbon leaching from microplastics at about 0.3 to 0.5 parts per thousand of the plastic mass. The leached organic matter showed significant potential to form trihalomethane and haloacetonitrile disinfection byproducts, raising concerns about chlorinated microplastics in drinking water systems.
Insight into the dynamic transformation properties of microplastic-derived dissolved organic matter and its contribution to the formation of chlorination disinfection by-products
Researchers studied how dissolved organic matter released from microplastics transforms under UV light and how it contributes to the formation of harmful disinfection byproducts during water chlorination. They found that UV exposure changed the chemical composition of the microplastic-derived organic matter, affecting its reactivity during disinfection. The findings suggest that microplastics in water sources may indirectly increase the formation of potentially harmful chemicals during standard water treatment.
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.
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.
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.
Effects of microplastics on water disinfection and formation of disinfection by-products
This review examines how the presence of microplastics in drinking water and wastewater interferes with chlorination and ozonation disinfection processes, potentially reducing their effectiveness and generating harmful disinfection by-products. Microplastics can leach dissolved organic carbon that reacts with disinfectants, and they serve as refuges for antibiotic-resistant bacteria that may survive standard treatment. The authors call for more realistic laboratory experiments and field studies to properly assess the real-world risks that microplastics pose inside water treatment plants.
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.
Unveiling 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.
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.
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.
The Influence of Some Physicochemical Parameters of Surface Waters on the Formation of Trihalomethanes During the Drinking Water Treatment Process
Despite its title referencing trihalomethanes in drinking water treatment, this paper studies disinfection byproducts formed during water chlorination — not microplastic pollution. It examines how water temperature, organic carbon content, and pH affect the formation of potentially carcinogenic chemical compounds in tap water in Romania and is not relevant to microplastics.
Formation mechanisms of carcinogenic N-nitrosamines from dissolved organic matter derived from nitrogen-containing microplastics during chloramine disinfection
Researchers investigated how dissolved organic matter in water facilitates the formation of carcinogenic N-nitrosamines during chlorination, finding that microplastic-associated organic compounds contributed to nitrosamine precursor pools in treatment scenarios.
The aging and pollution behavior of microplastics in tap water supply system subjected to residual chlorine exposure
Researchers studied how residual chlorine in tap water distribution systems ages ABS and polycarbonate microplastics, finding that chlorine exposure caused surface changes and increased hydrophilicity of the particles. The aging microplastics released dissolved organic matter into the water and, when interacting with chlorine, produced trichloromethane, a disinfection byproduct. The findings suggest that microplastics in drinking water infrastructure may contribute to the formation of harmful chemical byproducts.
The effects of polypropylene microplastics on the DBP formation under the chlorination and chloramination processes
Researchers investigated the formation of six disinfection by-products (DBPs) during chlorination and chloramination of water in the presence of polypropylene microplastics (PP MPs) under varying aquatic chemistry conditions. They found that PP MPs acted as DBP precursors under chlorination, but co-presence of Suwannee River Fulvic acid suppressed DBP formation by 56%, with pH and salinity further modulating the balance between PP as a precursor or organic scavenger.
Microplastics and nitrogenous disinfection byproducts in drinking water: complex interactions beyond adsorption
This study examined how microplastics in drinking water interact with nitrogenous disinfection byproducts (DBPs)—among the most toxic disinfection products—beyond simple adsorption. Researchers found that microplastics can modify DBP formation during water chlorination and alter their bioavailability, complicating risk assessment for treated drinking water containing both microplastics and disinfection byproducts.
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.
Interactive impacts of microplastics and chlorine on biological stability and microbial community formation in stagnant water
Researchers found that microplastics in stagnant drinking water accelerated chlorine decay and promoted microbial regrowth, with microplastic-associated biofilms harboring opportunistic pathogens and shifting microbial community composition toward potentially harmful species.
Towards microplastics contribution for membrane biofouling and disinfection by-products precursors: The effect on microbes
Researchers found that microplastics in raw water increased microbial growth and altered community composition during ultrafiltration, promoting extracellular polymer production that accelerated membrane fouling and elevated disinfection by-product formation in treated water.