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61,005 resultsShowing papers similar to Controlled carbonization of microplastics loaded nano zero-valent iron for catalytic degradation of tetracycline
ClearPeroxymonosulfate activation by microplastics coagulated sludge-derived iron-carbon composite for effective degradation of tetracycline hydrochloride: Performance and mechanism
This study used a one-step pyrolysis method to convert microplastic-containing coagulated sewage sludge into an iron-carbon composite, which was then used to activate peroxymonosulfate for degrading tetracycline hydrochloride. The approach simultaneously addressed microplastic waste disposal and antibiotic contamination removal.
Preparation of Sepiolite Nanofibers Supported Zero Valent Iron Composite Material for Catalytic Removal of Tetracycline in Aqueous Solution
Researchers developed a sepiolite nanofiber-supported zero-valent iron composite for catalytic removal of tetracycline from water, offering an efficient and environmentally friendly approach to degrading antibiotic contaminants that accumulate in aquatic environments.
Rapid iron redox cycling for nanoplastic and antibiotic electro-Fenton remediation by FeCo alloy on cellulose-derived carbon
Researchers developed an iron-cobalt alloy catalyst supported on biomass-derived carbon that achieves 100% degradation of both nanoplastics and antibiotics in water via the electro-Fenton process, overcoming the slow iron cycling and pH sensitivity that limit conventional iron-based catalysts.
Efficient tetracycline hydrochloride degradation via peroxymonosulfate activation by N doped coagulated sludge based biochar: Insights on the nonradical pathway
Researchers found a way to repurpose waste sludge from microplastic removal processes by converting it into a nitrogen-doped carbon material that can break down the antibiotic tetracycline in water. The recycled material performed well across a wide pH range and worked primarily through a nonradical pathway to degrade the antibiotic. The study offers a dual benefit approach that addresses both microplastic waste management and antibiotic contamination in water systems.
Distinctive adsorption and desorption behaviors of temporal and post-treatment heavy metals by iron nanoparticles in the presence of microplastics
Microplastics inhibited adsorption of most heavy metals by nano-zero-valent iron and facilitated their desorption during post-treatment, with the effect primarily affecting metals binding through surface complexation or electrostatic interaction rather than metals involved in redox reactions, providing insights for improved contaminated site remediation.
Microporous carbon derived from waste plastics for efficient adsorption of tetracycline: Adsorption mechanism and application potentials
Scientists converted waste PET plastic bottles into a porous carbon material that can remove 100% of the antibiotic tetracycline from water. The material worked effectively across a wide range of water conditions and could be reused multiple times. This approach offers a double benefit: it repurposes plastic waste that would otherwise become microplastic pollution while also cleaning antibiotics from water, addressing two environmental threats at once.
Environmental remediation approaches by nanoscale zero valent iron (nZVI) based on its reductivity: a review
This review covers how nanoscale zero-valent iron particles can be used to clean up contaminated wastewater through chemical reduction of pollutants like heavy metals and organic compounds. While not directly about microplastics, these remediation technologies are relevant because they represent advanced approaches to treating the kinds of contaminated water that often also contains microplastic pollution.
Surface wettability control and electron transport regulation in zerovalent iron for enhanced removal of emerging polystyrene microplastics-heavy metal contaminants
Researchers developed a specially engineered iron-based material that can simultaneously remove microplastics and heavy metals from wastewater by combining a water-repelling outer layer with efficient electron transfer at its core. In tests, the material removed over 99% of polystyrene microplastics and prevented the secondary release of heavy metals that often ride along on plastic particles. This addresses the concern that microplastics act as a "Trojan horse," carrying toxic metals into water supplies and living organisms.
Enhanced the interaction of biodegradable microplastics with tetracycline by persulfate oxidation process
Researchers studied how persulfate-based oxidation processes affect the adsorption of tetracycline onto biodegradable microplastics, finding that oxidative treatment altered the surface chemistry of the plastics and significantly enhanced their ability to bind this common antibiotic.
Improved Cadmium Removal Induced by Interaction of Nanoscale Zero-Valent Iron and Microplastics Debris
Researchers investigated how PVC microplastics interact with nanoscale zero-valent iron used to remove cadmium from contaminated water. The presence of microplastics actually enhanced cadmium removal, likely due to adsorption on the plastic surface. These findings are relevant because PVC production uses cadmium compounds, meaning both pollutants may co-occur in real environments.
Heavy metal remediation by nano zero-valent iron in the presence of microplastics in groundwater: Inhibition and induced promotion on aging effects
Researchers found that microplastics in groundwater significantly influenced the performance of nano zero-valent iron used for heavy metal remediation, with some microplastic types inhibiting and others promoting the aging and reactivity of the nanomaterial depending on polymer type and concentration.
Carbon Nanomaterials from Polyolefin Waste: Effective Catalysts for Quinoline Degradation through Catalytic Wet Peroxide Oxidation
Researchers converted mixed polyolefin plastic waste into carbon nanomaterials and used them as catalysts for quinoline degradation through catalytic wet peroxide oxidation, achieving effective removal of this toxic compound. The approach simultaneously addresses plastic waste accumulation and wastewater treatment challenges using a circular chemistry strategy.
Iron scrap derived nano zero-valent iron/biochar activated persulfate for p-arsanilic acid decontamination with coexisting microplastics
A biochar-loaded nano zero-valent iron material derived from iron scrap effectively degraded p-arsanilic acid via persulfate activation, and the study also examined how co-existing microplastics modified the removal efficiency of this organoarsenic pollutant.
The Photocatalytic Degradation of Enrofloxacin Using an Ecofriendly Natural Iron Mineral: The Relationship Between the Degradation Routes, Generated Byproducts, and Antimicrobial Activity of Treated Solutions
This paper is not relevant to microplastics research; it investigates the photocatalytic degradation of the antibiotic enrofloxacin in water using a natural iron mineral, focusing on pharmaceutical contamination rather than plastic particles.
Carbonized Waste Cation Exchange Resinwith Fe Doping for Persulfate Activationand Oxytetracycline Degradation:Performance and Mechanism
Researchers prepared a carbonized spent cation exchange resin doped with Fe3O4 (Fe3O4@CR) to activate persulfate for degrading the antibiotic oxytetracycline, achieving 76.4% removal under optimized conditions and identifying hydroxyl radicals and sulfate radicals as the primary reactive species responsible for degradation.
Driving synergistic Fe-N-Plastic co-metabolism and functional microbial symbiosis via nZVI@RA for enhanced decontamination in constructed wetlands
Researchers developed a recycled aggregate-supported nano-zero valent iron material (nZVI@RA) and demonstrated that it profoundly reshapes microbial communities in constructed wetlands to enhance synergistic iron, nitrogen, and nanoplastic co-metabolism, improving simultaneous decontamination performance.
Catalytic transformation of microplastics to functional carbon for catalytic peroxymonosulfate activation: Conversion mechanism and defect of scavenging
Researchers developed a method to convert high-density polyethylene plastic waste into functional carbon materials that can activate peroxymonosulfate to break down organic pollutants in water. Using a salt template-based approach with nickel chloride, they produced carbon nanosheets with high catalytic efficiency. The study demonstrates a promising approach for upcycling plastic waste into useful water purification catalysts.
Comparison of Cytotoxicityand Photocatalytic Propertiesof Iron Vanadate Nanoparticles with Commercial Catalysts: For theDegradation of Microplastics and Bacterial Inactivation Application
This study compared the cytotoxicity and photocatalytic properties of iron vanadate nanoparticles for degrading microplastics and associated antibiotic-resistant bacteria in water, finding effective photocatalytic activity under solar light that could address both plastic contamination and antimicrobial resistance simultaneously.
Iron‐Based Catalysts for the Removal of Microplastics
This review evaluates the potential of iron-based catalysts for degrading microplastics in water through photocatalytic, Fenton, and electrocatalytic approaches. Researchers highlight the advantages of iron's abundance, low toxicity, and catalytic versatility for generating reactive oxygen species that can break down plastics. The study identifies challenges including scalability and catalyst recovery while recommending interdisciplinary collaboration to advance iron-based remediation solutions.
Microwave-assisted rapid synthesis of C@Fe3O4 composite for removal of microplastics from drinking water
Researchers synthesized a magnetic carbon-iron oxide composite material that efficiently adsorbed and removed microplastics from drinking water using a simple magnetic separation step. The rapid synthesis method and strong removal performance suggest this material could be practical for water treatment applications.
Remediation of Micropalstic-heavy Metal Cocontaminated Soils Using Nanoscale Zero-valent Iron Supported on Palygorskite: Mechanisms and Effectiveness
Researchers developed a remediation approach for soils co-contaminated with microplastics and heavy metals using nanoscale zero-valent iron supported on palygorskite. The composite material effectively inhibited microplastic migration in soil and reduced heavy metal mobility, with the microplastic content in deeper soil layers remaining at only about 8% of initial levels after treatment.
How Do Micro‐ and Nanoplastics (MNPs) Affect Contaminant Removal by Nano Zero‐Valent Iron (nZVI) in Water and Soil?: A Review
This review examines how microplastics and nanoplastics interfere with nano zero-valent iron (nZVI), a widely used material for cleaning up contaminated groundwater and soil, finding that plastic particles typically reduce nZVI's effectiveness by clogging reactive sites and causing premature aging. The finding matters because it suggests that microplastic contamination at remediation sites could undermine cleanup efforts for other pollutants like heavy metals and organic compounds, requiring modified iron formulations (such as sulfidated nZVI) to maintain performance.
Removal and Degradation of Microplastics Using the Magnetic and Nanozyme Activities of Bare Iron Oxide Nanoaggregates
Researchers developed bare iron oxide nanoaggregates that both remove and catalytically degrade common microplastics with nearly 100% efficiency, achieving full extraction at just 1% of the microplastic mass through combined magnetic and nanozyme activities.
Removal of PET Microfibers from Simulated Wastewater Using Magnetic Nano-Ferric-Loaded Biochar: High Adsorption and Regeneration Performance
A magnetic nano-iron-oxide-loaded biochar adsorbent achieved over 99% removal of PET microfibers from simulated wastewater and showed strong regeneration performance over multiple cycles, offering a practical and recyclable treatment solution for textile microfiber pollution.