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61,005 resultsShowing papers similar to Flocculation Properties of Acrylamide‐Grafted Tamarind Polysaccharide on Microplastics and Heavy Metals Ions
ClearAcrylamide Cross‐Linked Psyllium Polysaccharide with Improved Flocculation Performance for the Removal of Microplastics from Water
Researchers synthesized acrylamide cross-linked psyllium polysaccharide as a biodegradable flocculant and tested it for removing polystyrene, PET, and PVC microplastics from water. The material achieved effective flocculation of all three polymer types under optimized conditions, offering a sustainable alternative to synthetic polymer flocculants.
Sustainable Removal of Microplastics and Natural Organic Matter from Water by Coagulation–Flocculation with Protein Amyloid Fibrils
Researchers developed a novel water treatment method using protein-based amyloid fibrils as a natural flocculant to remove microplastics and dissolved organic matter from water. The method achieved removal efficiencies above 97% for both microplastic particles and humic acid, outperforming conventional chemical flocculants at the same dosage. The approach offers a sustainable, biodegradable alternative to traditional water treatment chemicals for addressing microplastic 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.
Efficient and Selective Removal of Heavy Metals and Dyes from Aqueous Solutions Using Guipi Residue-Based Hydrogel
Researchers created a hydrogel material from Chinese herbal medicine residue and chitosan that can effectively remove lead, cadmium, and toxic dyes from polluted water. The material maintained its cleaning ability through at least five reuse cycles. While not focused on microplastics, this type of water treatment technology could be part of broader solutions for removing multiple contaminants, including microplastics, from drinking water sources.
Natural-based coagulants/flocculants for microplastics and nanoplastics removal via coagulation–flocculation: a systematic review
This systematic review evaluates how natural plant-based materials can be used to remove microplastics and nanoplastics from water through coagulation and flocculation processes. The findings show that these sustainable, nature-derived alternatives can effectively capture plastic particles during water treatment, offering a greener approach to reducing microplastic contamination in our drinking water.
Elimination of a Mixture of Microplastics Using Conventional and Detergent-Assisted Coagulation
Researchers tested coagulation as a method to remove microplastics from tap water, evaluating how microplastic type (PE and PVC), water pH, coagulant dose, and microplastic concentration affect removal efficiency, and finding that detergent-assisted coagulation improves performance.
Microalgae separation in MP-PVC contaminated wastewater using plant-based coagulant over different extraction methods in Bauru, Brazil
Researchers tested Moringa oleifera plant extracts as natural coagulants for removing microalgae and PVC microplastics from photobioreactor wastewater, achieving over 83% turbidity removal and 63% microplastic removal under optimized conditions. Plant-based coagulants are a more sustainable and lower-cost alternative to synthetic chemical flocculants, and this study demonstrates they can handle the combined challenge of microalgae and microplastic removal simultaneously.
Enhancing microplastic removal from natural water using coagulant aids
Researchers tested different chemical treatments for removing microplastic beads from natural water and found that polyaluminium chloride combined with polyacrylamide achieved over 95% removal across six common plastic types. The treatment worked on particles ranging from 10 to 1,000 micrometers, and natural organic matter in the water actually improved performance. The findings suggest that optimizing standard water treatment processes could be a practical way to reduce microplastic contamination in drinking water sources.
Enhanced removal of polyethylene microplastics from water through polymeric ferric sulfate with laminarin
Researchers developed an enhanced coagulation technique using polymeric ferric sulfate combined with laminarin, a seaweed-derived compound, to remove polyethylene microplastics from water. The combined approach achieved a 93.8% removal rate compared to only 48.5% with the coagulant alone, by significantly boosting charge neutralization and adsorption bridging mechanisms. The study demonstrates that natural coagulant aids can substantially improve the effectiveness of microplastic removal during water treatment.
Tailored cellulose-based flocculants for microplastics removal: Mechanistic insights, pH influence, and efficiency optimization
Researchers developed plant-derived (cellulose-based) flocculants that clump microplastics together so they can be more easily removed from water, finding that a low concentration of 0.001 g/mL was optimal and that both electrical charge and water-repelling interactions drive the process depending on the type of plastic.
Scavenging microplastics and heavy metals from water using jujube waste-derived biochar in fixed-bed column trials
Researchers found that biochar derived from jujube waste effectively removed over 99% of nylon and polyethylene microplastics from water in fixed-bed column trials, while also demonstrating capacity for heavy metal removal at optimal neutral pH.
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.
Sustainable coagulative removal of microplastic from aquatic systems: recent progress and outlook
This review examines how natural coagulants from plants, animals, and microbes can be used to remove microplastics from water as a greener alternative to conventional chemical treatments. These bio-based coagulants, especially when combined with nanotechnology, show promising removal rates while avoiding the toxic residues left by traditional chemical approaches.
Removal of Co-Occurring Microplastics and Metals in an Aqueous System by Pristine and Magnetised Larch Biochar
Researchers tested pristine and modified biochar for simultaneous removal of co-occurring microplastics and heavy metals from water, finding that biochar surface modifications improved adsorption of both contaminant classes, offering a promising dual-removal treatment strategy.
Removal of Pristine and UV-Weathered Microplastics from Water: Moringa oleifera Seed Protein as a Natural Coagulant
Researchers tested a natural plant-based coagulant from Moringa oleifera seeds for removing microplastics from water, comparing it to conventional chemical treatments. The natural coagulant effectively removed both fresh and UV-weathered polyethylene microplastics, performing comparably to synthetic alternatives. This approach offers a more eco-friendly and less toxic option for cleaning microplastics from water systems.
Enhancing the remediation of polyamide microplastics: A comparative study of natural and synthetic coagulants
Researchers compared natural plant-based coagulants with the synthetic coagulant alum for removing polyamide microplastics from water. They found that alum was more effective overall, removing up to 94% of microplastics, while the natural coagulants achieved moderate removal rates and worked best with larger particles. The study suggests that coagulation-based water treatment can meaningfully reduce microplastic contamination, with natural alternatives offering a more sustainable option.
Optimisation of Chitosan as A Natural Flocculant for Microplastic Remediation
Laboratory tests found that chitosan — a natural, biodegradable material derived from shellfish — can remove 68.3% of microplastics from water using a coagulation-flocculation process, with an optimal concentration of 30 ppm. Higher chitosan doses increased organic matter in the water (COD and BOD), suggesting a trade-off between microplastic removal efficiency and water quality parameters. Chitosan offers a promising eco-friendly alternative to synthetic chemicals for treating microplastic-contaminated water.
Removal of microplastics from water by coagulation of cationic-modified starch: An environmentally friendly solution
Researchers developed a cationic-modified starch bio-coagulant as an eco-friendly method for removing microplastics from water, achieving an average removal rate of over 65% for polystyrene particles. The starch-based treatment was effective across a wide range of water pH levels and performed well in natural water samples from China's Yangtze River Delta. The study offers a sustainable and cost-effective approach for addressing microplastic contamination in water systems.
Impact of fiber-based super-bridging agents on contaminant removal via settling and screening: microplastics, textile fibers, and turbidity
Researchers added fiber-based super-bridging agents to standard water treatment coagulation and flocculation processes and found they created flocs 10 to 100 times larger than normal, dramatically improving settling. The agents also cut chemical demand by 50% and improved removal of microplastics, textile fibers, and turbidity from water. This approach could make water treatment more efficient and cost-effective while specifically targeting microplastic removal.
Efficacy of Protein Extracts of Moringa oleifera and Benincasa hispida Seeds for the Treatment of Microplastics
Researchers tested protein extracts from Moringa oleifera and Benincasa hispida seeds as natural coagulants for removing microplastics from water. Moringa extracts achieved 94% removal efficiency at a dosage of 30 mL/L, while Benincasa hispida reached 88% removal at 40 mL/L under neutral pH conditions. The study suggests these plant-based coagulants could serve as effective, sustainable, and affordable alternatives to synthetic chemicals for microplastic treatment in water systems.
Fenugreek and Okra Polymers as Treatment Agents for the Removal of Microplastics from Water Sources
Researchers tested plant-derived polysaccharides from fenugreek and okra as natural flocculants for removing microplastics from water samples collected from surface, ocean, and groundwater sources. The study found that a 1:1 combination of fenugreek and okra polymers at 1 g/L concentration was effective at capturing microplastics, offering a biodegradable and non-toxic alternative to conventional synthetic flocculants used in water treatment.
Fenugreek and OkraPolymers as Treatment Agents forthe Removal of Microplastics from Water Sources
Researchers evaluated fenugreek and okra plant-derived polysaccharides as biodegradable, non-toxic flocculants for removing microplastics from water sources, positioning them as alternatives to conventional inorganic and synthetic organic flocculants. The study assessed their coagulation and flocculation performance for capturing fine microplastic particles that evade standard wastewater treatment processes.
Enhanced removal of microplastic fibres using aluminium and chitosan-based coagulants assisted with microbubble technology
Researchers tested the removal of microplastic fibers from water using aluminium-based and chitosan-based coagulants combined with sedimentation and microbubble flotation techniques. The aluminium coagulant achieved the highest removal rate of 88% through sedimentation in humic acid-containing water, while chitosan achieved 78% removal using microbubble flotation at a lower dosage. The findings suggest that the natural coagulant chitosan has potential as an effective and greener alternative for microplastic fiber removal in water treatment.
Coagulative removal of microplastics from aqueous matrices: Recent progresses and future perspectives
This review examines how coagulation, a common water treatment technique, can be used to remove microplastics from water. Researchers compared the effectiveness of different coagulants, finding that natural options like chitosan and protein-based coagulants achieved removal rates above 90 percent. The study highlights the promise of natural coagulants as a more sustainable approach to tackling microplastic contamination in water treatment systems.