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Papers
61,005 resultsShowing papers similar to Preparation, Characterization and Adsorption Properties of Chitosan-Iron Nanocomposite
ClearGreen-Synthesized Iron Oxide-Chitosan Nanocomposite for Chromium and Nanoplastics Remediation
Researchers synthesized iron oxide nanoparticles and a chitosan-based iron oxide nanocomposite using Aspergillus iranicus for the first time, demonstrating effective simultaneous removal of chromium ions and nanoplastics from contaminated water.
Preparation and Characterization of Fe3O4/Poly(HEMA-co-IA) Magnetic Hydrogels for Removal of Methylene Blue from Aqueous Solution
Not relevant to microplastics — this study synthesizes magnetic hydrogels (iron oxide particles in a polymer network) for removing the dye methylene blue from water, a water treatment application unrelated to microplastic pollution.
The use of chitosan for water purification from microplastics
Researchers investigated chitosan as a sorbent for removing microplastics from water, analyzing its physicochemical properties and proposing an optimized purification method based on chitosan's sorption characteristics.
Microplastics and other pollutants in the aquatic environment: study of interactions and new removal strategies
Researchers evaluated iron magnetic nanoparticles (MNPs) with varying surface modifications -- bare Fe3O4, TEOS-coated, and TEOS+MPS-coated -- for removing four types of microplastics (Nylon 6, PTFE at two sizes, and PMMA) from water, assessing how surface chemistry and synthesis time affect removal efficiency.
Facile Preparation of Magnetic Chitosan Carbon Based on Recycling of Iron Sludge for Sb(III) Removal
Researchers prepared magnetic chitosan carbon by recycling iron sludge from water treatment combined with chitosan, characterizing the material's sorption capacity for heavy metals and organic dyes. The composite showed effective removal of both types of contaminants and could be magnetically separated for regeneration, offering a dual-function adsorbent derived from waste streams.
Engineering a chitosan-encapsulated PDA/Fe3O4@cenosphere composite for dual adsorption of microplastics and organic dyes
Researchers engineered a composite adsorbent from industrial fly ash waste by coating cenospheres with polydopamine and iron oxide, then encapsulating them in chitosan beads. The resulting material demonstrated high adsorption capacity for both polystyrene microplastics and organic dyes, and could be magnetically recovered for reuse. The study presents a sustainable approach to water remediation that simultaneously addresses microplastic and dye pollution using repurposed industrial waste.
Polystyrene microplastics removal from aqueous solutions by magnetic iron nanoparticles
Researchers tested magnetic iron oxide (Fe₃O₄) nanoparticles for removing polystyrene microplastics from water, systematically optimizing concentration, dosage, contact time, and pH, and found effective microplastic removal through adsorption interactions that could be leveraged for environmental remediation.
Characterization of Fe3O4/rGO Composites from Natural Sources: Application for Dyes Color Degradation in Aqueous Solution
This materials chemistry paper describes the synthesis of iron oxide/graphene oxide composite nanoparticles from natural sources and tests their ability to break down dye pollutants in water. It is focused on water treatment chemistry rather than microplastic pollution specifically.
Properties and Possibilities of Using Biochar Composites Made on the Basis of Biomass and Waste Residues Ferryferrohydrosol Sorbent
Not relevant to microplastics — this is a materials science study on iron-enriched biochar composites made from waste biomass, evaluated for their ability to remove dyes, pharmaceuticals, and heavy metals from water via adsorption.
Efficient and Low-Cost Water Remediation for Chitosan Derived from Shrimp Waste, an Ecofriendly Material: Kinetics Modeling, Response Surface Methodology Optimization, and Mechanism
This paper is not relevant to microplastics research — it investigates chitosan derived from shrimp shells as a low-cost adsorbent for removing Orange G dye from water, focusing on dye remediation chemistry rather than microplastic contamination.
Testing an Iron Oxide Nanoparticle-Based Method for Magnetic Separation of Nanoplastics and Microplastics from Water
Researchers tested iron oxide nanoparticles with hydrophobic coatings as a method for magnetically separating micro- and nanoplastics from water. The approach achieved 100% removal of larger microplastics and nearly 90% removal of nanoplastics using a simple permanent magnet, suggesting a viable method for water purification and environmental monitoring.
Towards sustainable microplastic cleanup: Al/Fe ionotropic chitosan hydrogels for efficient PET removal
Researchers developed chitosan-based hydrogel beads modified with aluminum and iron for removing PET microplastics from water. The aluminum-modified beads showed the best performance, achieving high microplastic removal efficiency through electrostatic interactions with the plastic particles. The study suggests that these sustainable, bio-based adsorbents could offer an effective and environmentally friendly approach to cleaning microplastic-contaminated water.
Adsorptive removal of micron-sized polystyrene particles using magnetic iron oxide nanoparticles
Researchers demonstrated that magnetic iron oxide nanoparticles can effectively adsorb and remove micron-sized polystyrene microplastics from water, offering a magnetically recoverable approach to microplastic remediation.
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.
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.
Synergistic removal of microplastic fibres using hybrid pre-treatment: evaluation of Chitosan as a green coagulant
Researchers evaluated the capacity of existing water treatment pre-treatment methods to remove microplastic fibers and investigated chitosan — a low-molecular-weight, 75-85% deacetylated green coagulant — as an alternative to conventional chemical coagulants. The study assessed a hybrid pre-treatment approach, finding synergistic microplastic fiber removal efficiency when chitosan was combined with existing processes.
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.
Comparison of MAF-32 and a One-Pot Synthesized Superparamagnetic Iron Oxide/MAF-32 Composite for the Adsorption of Diclofenac
This paper is not about microplastics. It describes the development of a magnetic composite material for removing the pharmaceutical pollutant diclofenac from water. While pharmaceutical water contamination is a public health concern, this study focuses on materials science and drug removal technology rather than microplastic pollution or its health effects.
Plastics adsorption and removal by 2D ultrathin iron oxide nanodiscs: From micro to nano
Researchers developed ultra-thin magnetic iron oxide nanodiscs for removing micro- and nanoplastics from water. The study found that these nanodiscs achieved high adsorption capacity through electrostatic and magnetic forces, and maintained over 90% removal efficiency after five reuse cycles, offering a cost-effective approach for treating plastic-contaminated wastewater.
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.
Facile synthesis and characterization of Fe3O4/analcime nanocomposite for the efficient removal of Cu(II) and Cd(II) ions from aqueous media
This paper is not relevant to microplastics research — it synthesises a magnetic Fe3O4/analcime nanocomposite for removing copper and cadmium ions from water, focused on heavy metal remediation.
MO dye adsorption and desorption on MPs.
Researchers investigated the adsorption and desorption of methyl orange, an anionic dye, on environmentally aged polyethylene, polyethylene terephthalate, and polystyrene microplastics, characterizing their interactions in aquatic environments using FTIR and other analytical methods to understand contaminant co-transport risks.
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.
Synergistic removal of microplastic fibres: Integrating Chitosan coagulation in hybrid water pre-treatment systems
Microplastic fibers are the most common type of microplastic found entering water treatment plants, yet their elongated shape makes them especially hard to remove with conventional filters. This study investigated using chitosan — a natural, biodegradable material derived from crustacean shells — as a "green" coagulant to clump fibers together so they can be more easily removed, and also developed chemically modified versions of chitosan that work across a wider range of water conditions. The results showed that combining chitosan-based coagulation with microbubble aeration creates a synergistic pretreatment system that significantly improves microplastic fiber removal while avoiding the residual metal ions left by conventional chemical coagulants.