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20 resultsShowing papers similar to Environmental remediation approaches by nanoscale zero valent iron (nZVI) based on its reductivity: a review
ClearMini review on the application research of nanoscale zero valent iron in water treatment
This mini-review covers nanoscale zero valent iron (nZVI) particles as tools for environmental pollution control, capable of adsorbing and chemically reducing heavy metals and organic contaminants in water. These nanomaterials are also being explored for microplastic removal and the breakdown of plastic-associated chemical pollutants in water 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.
Recent Advances in Nanoscale Zero-Valent Iron (nZVI)-Based Advanced Oxidation Processes (AOPs): Applications, Mechanisms, and Future Prospects
This review covers how tiny iron particles called nanoscale zero-valent iron (nZVI) can be used to break down organic pollutants in water through advanced chemical reactions. These methods show promise for cleaning up contaminated environments, including water sources affected by plastic-related and other industrial pollutants. The technology is cost-effective and environmentally friendly, though challenges remain in scaling it up.
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.
Peer Review #2 of "Zero-valent iron nanoparticles for environmental Hg (II) removal: a review (v0.2)"
Not relevant to microplastics — this is a peer review document for a paper on using zero-valent iron nanoparticles to remove mercury contamination from soil and water environments.
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.
Nitrate Removal by Zero-Valent Metals: A Comprehensive Review
This comprehensive review examines the use of zero-valent metals for removing nitrate contamination from water, covering reaction mechanisms, efficiency factors, and practical applications. While not directly focused on microplastics, the study is relevant to understanding water treatment technologies that address co-occurring contaminants in polluted water systems.
Improved Delivery of Nanoscale Zero-Valent Iron Particles and Simplified Design Tools for Effective Aquifer Nanoremediation
This paper is not about microplastics; it presents laboratory tests and modeling tools for injecting nanoscale zero-valent iron (nZVI) particles into contaminated aquifers for groundwater remediation.
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.
The influence of various microplastics on PBDEs contaminated soil remediation by nZVI and sulfide-nZVI: Impedance, electron-accepting/-donating capacity and aging
PVC, PS, and PP microplastics in contaminated soil inhibited the degradation of the brominated flame retardant BDE209 by nano-zero-valent iron and sulfided nZVI to varying degrees, with inhibition linked to microplastic impedance and electron-accepting capacity, while microplastics themselves showed aging and fragmentation during the remediation process.
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.
Sulfidated Nanoscale Zero-Valent Iron (S-nZVI) Facilitates Remediation and Safe Crop Production in Cr(VI) and Microplastics Co-contaminated Soil
Researchers tested sulfidated nanoscale zero-valent iron as a way to clean up agricultural soil contaminated with both chromium and microplastics. The treatment effectively reduced toxic chromium levels and helped trap microplastics, making it safer to grow crops in the contaminated soil. The study offers a promising approach for addressing the growing problem of combined heavy metal and microplastic contamination in farmland.
Remediation strategies for micro/nanoplastic pollution using magnetic nanomaterials
This review surveys recent developments in using magnetic nanomaterials, such as iron oxide nanoparticles and magnetic composites, to remove micro- and nanoplastics from water and soil. These materials can capture plastic particles through adsorption, help clump them together for removal, or even break them down, and they can be magnetically recovered for reuse. The study highlights that magnetic nanomaterials offer a promising approach for cleaning up plastic pollution, though challenges remain in scaling up for real-world use.
Nanoremediation: A New and Emerging Technology
This chapter reviews nanoremediation -- the use of engineered nanoparticles to clean up contaminated soil and water -- and notes that nano- and microplastic pollution is an emerging contaminant that these technologies could help address. The author discusses how carbon nanotubes, zero-valent iron, and magnetic nanoparticles can remove organic pollutants and metals, and suggests these same approaches may have promise for removing microplastics from the environment. The technology is still in early stages and relatively expensive.
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.
Removal of microplastics from water by magnetic nano-Fe3O4
Researchers developed a method for removing microplastics from water using magnetic iron oxide nanoparticles that attach to plastic surfaces, allowing the particles to be pulled out with a magnet. The technique achieved removal rates above 80% for common microplastic types in environmental water samples including river water, sewage, and seawater, suggesting a practical approach for water treatment.
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.
Deciphering theRole of Heavy Metals in Zero-ValentIron-Driven Dechlorination of PVC Microplastics under Mild Condition
Researchers demonstrated that nanoscale zerovalent iron can effectively dechlorinate PVC microplastics under mild anaerobic conditions, with heavy metals playing a critical modulating role — nickel and copper promoted dechlorination while chromium significantly inhibited it. The dechlorination efficiency ranking of Ni > Cu > Co > Cr reflects differences in electron transfer promotion and active iron phase formation.
Magnetic Cobalt and Other Types of Ferrite Nanoparticles: Synthesis Aspects and Novel Strategies for Application in Wastewater Treatment (Review)
This review examines how magnetic ferrite nanoparticles can be used to remove pollutants from wastewater through both physical adsorption and light-activated chemical breakdown. While focused on water treatment technology rather than microplastics directly, these nanoparticles could potentially be used to capture or degrade microplastics and the toxic chemicals they carry. Advances in wastewater treatment are essential for reducing the amount of microplastics that reach drinking water sources.
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.