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61,005 resultsShowing papers similar to Magnetically Separable Humic Acid-Chitin Based Adsorbent as Pb(II) Uptake in Synthetic Wastewater
ClearMagnetite-Functionalized Horse Dung Humic Acid (HDHA) for the Uptake of Toxic Lead(II) from Artificial Wastewater
Scientists synthesized a magnetic material from horse dung-derived humic acid to efficiently remove lead from wastewater, achieving rapid uptake and easy magnetic separation. While focused on heavy metals, magnetic separation technology is also being explored for removing microplastics from water.
Functionalization of Strontium Ferrite Nanoparticles with Novel Chitosan–Schiff Base Ligand for Efficient Removal of Pb(II) Ions from Aqueous Media
Researchers developed a new magnetic nanocomposite made from strontium ferrite and a chitosan-based compound to remove lead from contaminated water. The material achieved over 98% lead removal efficiency under optimized conditions and could be easily recovered using a magnet for reuse. This approach offers a promising, recyclable tool for cleaning up heavy metal pollution in water sources.
Conversion of the styrofoam waste into a high-capacity and recoverable adsorbent in the removing the toxic Pb(II) from water media
Researchers chemically modified waste styrofoam — a common plastic pollutant — into a magnetic adsorbent capable of removing toxic lead (Pb²⁺) ions from water, achieving around 90% removal efficiency. This work shows that plastic waste can be repurposed into useful water-treatment materials, offering a dual benefit of reducing plastic waste while cleaning heavy metal contamination.
Exploring Humic Acid as an Efficient and Selective Adsorbent for Lead Removal in Multi-Metal Coexistence Systems: A Review
This review examines how humic acid, a natural substance found in soil and water, can selectively remove lead from water contaminated with multiple heavy metals. The research explores how to enhance humic acid's ability to capture lead ions specifically, including through chemical activation and pH control. While focused on heavy metals, the work is relevant to microplastics research because microplastics can concentrate and transport lead and other heavy metals, and better lead removal from water could reduce this combined pollution threat.
Fabrication and Characterization Fe3O4/Humic Acid for the Efficient Removal of Malachite Green
Researchers synthesized magnetite/humic acid composites (Fe3O4/HA) and tested their ability to remove malachite green dye from water, finding effective adsorption following pseudo-second-order kinetics. The magnetic material offers an environmentally friendly approach to removing dye pollutants from water.
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.
Magnetic Extraction of Weathered Tire Wear Particles and Polyethylene Microplastics
Researchers developed a hydrophobic magnetic nanocomposite that can rapidly extract both polyethylene microplastics and tire wear particles from freshwater using magnets, offering a low-cost method for removing these pollutants from environmental water samples.
Coagulation properties of magnetic magnesium hydroxide for removal of microplastics in the presence of kaolin and humic acid
A magnetic magnesium hydroxide coagulant was prepared and combined with a polymer flocculant to remove polyethylene microplastics from water, achieving 87.1% removal efficiency. The magnetic component allowed easy post-treatment separation, and the presence of kaolin and humic acid in the water affected removal performance.
Adsorptive Elimination of Heavy Metals from Aqueous Solution Using Magnetic Chitosan/Cellulose-Fe(III) Composite as a Bio-Sorbent
Magnetic chitosan/cellulose-Fe(III) composite biosorbents were developed and characterized, demonstrating effective removal of Cr(VI), Cu(II), and Pb(II) from water, with adsorption efficiency varying with pH, dose, time, and temperature according to Langmuir and Freundlich isotherm models.
Synthesis of polyvinyl chloride modified magnetic hydrochar for effective removal of Pb(II) and bisphenol A from aqueous phase: performance and mechanism exploration
Scientists created a new material by combining PVC plastic waste with corn straw and iron oxide to make a magnetic filter that can remove lead and bisphenol A from water. The material worked well across a wide range of water conditions and could be reused multiple times. While focused on water cleanup technology, this research shows how recycled plastic waste can be repurposed to help address water contamination, including pollutants often associated with microplastics.
Adsorption Ability of Soft Magnetic FeCo Alloys for Microplastics
Researchers synthesized soft magnetic FeCo alloy nanoparticles loaded onto carboxymethyl cellulose and systematically characterized their ability to adsorb polyethylene microplastics from water, finding effective magnetic-assisted removal that could be applied for environmental microplastic remediation.
Efficient Removal of Micro-Sized Degradable PHBV Microplastics from Wastewater by a Functionalized Magnetic Nano Iron Oxides-Biochar Composite: Performance, Mechanisms, and Material Regeneration
Researchers developed a magnetic iron oxide-biochar composite capable of removing biodegradable PHBV microplastics from wastewater with over 98% efficiency. The material worked through a combination of surface adsorption and magnetic separation, maintained performance across a wide pH range, and retained over 92% removal efficiency after four regeneration cycles.
Effects of humic acids on the adsorption of Pb(II) ions onto biofilm-developed microplastics in aqueous ecosystems
Biofilm-coated PVC microplastics adsorbed Pb(II) ions at 3.57 mg/g, nearly double the capacity of virgin PVC at 1.85 mg/g, while humic acid increased Pb adsorption on virgin PVC through complexation but decreased adsorption on biofilm-coated PVC by shielding sorption sites.
Enhanced removal of microplastics from wastewater treatment plants by a novel magnetic filter
This study developed a novel magnetic adsorption approach to enhance microplastic removal in wastewater treatment plant effluents, achieving high removal efficiency across a range of particle sizes and polymer types.
Magnetic nanocomposites: innovative adsorbents for antibiotics removal from aqueous environments–a narrative review
This review examines how magnetic nanocomposite materials can be used to remove pharmaceutical pollutants from water. While not directly about microplastics, the technology is relevant because microplastics in water often carry pharmaceutical residues that conventional treatment cannot fully remove. Better water filtration methods like these could help reduce human exposure to the cocktail of pollutants that microplastics transport.
A novel polymer coated magnetic activated biochar-zeolite composite for adsorption of polystyrene microplastics: Synthesis, characterization, adsorption and regeneration performance
Researchers developed a new magnetic composite material made from biochar, zeolite, and polymer coatings that can effectively capture microplastics from water. The material removed over 90 percent of test microplastics and could be regenerated and reused multiple times. The study presents a promising, practical approach for filtering microplastics out of contaminated water using materials that can be magnetically recovered.
Enhanced adsorption and co-adsorption of heavy metals using highly hydrophilicity amine-functionalized magnetic hydrochar supported MIL-53(Fe)-NH2: performance, kinetics and mechanism studies
Researchers developed a composite material made from invasive plant-derived carbon combined with a metal-organic framework to simultaneously remove multiple heavy metals from water. The approach addresses co-contamination of aquatic environments where heavy metals and microplastics often occur together.
pH-responsive magnetic artificial melanin with tunable aggregation-induced stronger magnetism for rapid remediation of plastic fragments.
Researchers developed a magnetic material that changes its behavior in response to pH and can rapidly clump together with plastic fragments in water, allowing them to be pulled out with a magnet. This pH-responsive magnetic approach could offer a practical method for removing microplastics from water sources, including drinking water.
Recent advances in magnetic sodium alginate-based composites as the emerging adsorbents for wastewater treatment: A review
This review examines recent advances in magnetic sodium alginate-based composite materials as adsorbents for water contaminant removal, evaluating their effectiveness for removing heavy metals, dyes, pharmaceuticals, and microplastics from aqueous systems.
Enhanced vector transport of microplastics-bound lead ions in organic matter rich water
Researchers evaluated how pristine and aged polyethylene microplastics adsorb Pb2+ ions in water under varying pH, ionic strength, contact time, Pb2+ concentration, and humic acid (HA) concentration, finding that HA enhanced lead adsorption onto aged microplastics and that maximum adsorption occurred around pH 5-6, demonstrating the vector transport potential of microplastics for lead in organic matter-rich waters.
Evaluation of Efficient Pb Removal from Aqueous Solutions using Biochar Beads
Researchers developed alginate-biochar bead composites to improve the removal of lead from water compared to powdered biochar alone. The beads were easier to separate from solution and maintained high removal efficiency. This approach could make biochar-based heavy metal remediation more practical for real-world water treatment applications.
Synthesis of Amorphous MnFe@SBA Composites for Efficient Adsorptive Removal of Pb(Ⅱ) and Sb(V) from Aqueous Solution
Researchers synthesized a new composite material by growing manganese-iron oxide on a porous silica support for removing lead and antimony from contaminated water. The material removed over 99 percent of lead and 80 percent of antimony within two hours and performed well even in the presence of other dissolved ions. While not directly related to microplastics, the study contributes to water purification technology that could complement plastic pollution cleanup efforts.
Enhanced removal of microplastics from wastewater hydrological pathways using a magnetically recoverable Fe 3 O 4 /carbon black nanocomposite
Scientists developed a new magnetic material that can remove nearly 99% of tiny plastic particles from wastewater before it gets released into rivers and oceans. The material works like a magnet to grab plastic pieces from dirty water, then can be pulled out and reused. This could help stop microplastics from building up in our water supply and food chain, where they may pose health risks to humans.
Insights into catalytic removal and separation of attached metals from natural-aged microplastics by magnetic biochar activating oxidation process
A magnetic biochar material activated persulfate to degrade the organic layer on aged microplastics, releasing bound metals like lead and then re-adsorbing them from solution for magnetic separation. The approach demonstrates a combined oxidation and adsorption strategy for removing hazardous metals associated with microplastics in contaminated water.