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61,005 resultsShowing papers similar to Optimisation of Chitosan as A Natural Flocculant for Microplastic Remediation
ClearUtilization of chitosan as a natural coagulant for polyethylene microplastic removal
Scientists tested chitosan, a natural material derived from shellfish, as an eco-friendly way to remove polyethylene microplastics from water. Under the best conditions (pH 6.0 with 100 mg/L of chitosan), the treatment removed 81.5% of microplastics, offering a promising and environmentally safe approach to cleaning microplastic-contaminated water.
Interaction of chitosan with nanoplastic in water: The effect of environmental conditions, particle properties, and potential for in situ remediation
Researchers tested chitosan — a natural polymer derived from shellfish — as a tool to aggregate and remove nanoplastic particles from water, finding it caused clumping at low doses but that high pH, dissolved organic matter, and surface chemistry of the plastics all affected its performance. The results suggest chitosan-based treatment has real potential for water remediation but requires careful tuning of environmental conditions.
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.
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.
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.
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.
Optimizing biocoagulant aid from shrimp shells (Litopenaeus vannamei) for enhancing microplastics removal from aqueous solutions
This study investigated chitosan derived from shrimp shell waste as a biocoagulant for removing microplastics from water, optimizing the coagulation-flocculation process to maximize particle capture. The results showed high removal efficiency, offering a biodegradable and sustainable approach to microplastic water treatment.
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.
Integrated Chitosan-based coagulation and microbubble pre-treatment for improved microplastic fibre removal from water
Researchers developed a combined chitosan-based coagulation and microbubble pre-treatment system for removing microplastic fibres from water, finding that this approach overcame the limitations of conventional inorganic coagulants and improved removal efficiency for the morphologically challenging fibre fraction.
Utilization of chicken eggshell and chitosan as coagulants for microplastic removal from aquatic system
This study tested chicken eggshell powder and chitosan as natural coagulants for removing microplastics from water, finding that both materials effectively aggregated plastic particles and settled them from suspension, offering low-cost and biodegradable alternatives to synthetic coagulants.
Chitosan: A Novel Approach and Sustainable Way to Remove Contaminants and Treat Wastewater
This review examines how chitosan, a natural material derived from crustacean shells, can be used to remove pollutants including microplastics, heavy metals, and pesticides from wastewater. Chitosan's chemical structure allows it to bind and capture a wide range of contaminants, and it can be combined with other materials to improve its effectiveness. Developing affordable, biodegradable water treatment materials like chitosan could help reduce human exposure to microplastics in drinking water.
Optimum Conditions for Enhancing Chitosan-Assisted Coagulation in Drinking Water Treatment
Researchers determined optimal conditions for using chitosan, a natural polysaccharide, as a coagulant aid in drinking water treatment. The study found that adding chitosan during the rapid stirring phase after the primary coagulant yielded the most efficient results, suggesting a safe and effective approach for improving water purification using natural materials.
Harnessing the power of amphoterically modified Chitosan coagulants for enhanced Polyester microplastic fibre removal from water
Amphoterically modified chitosan was used as a coagulant aid to capture microplastics from water, leveraging the biopolymer's charge-switching ability to bind particles across a range of pH conditions. Chitosan-based capture materials are attractive because chitosan is biodegradable and derived from renewable sources.
Overlooked role of aged cationic natural organic matter in aquatic microplastics aggregation-sedimentation
Aged cationic chitosan (a natural biopolymer) was found to drive aggregation and sedimentation of both conventional polystyrene and biodegradable PMMA microplastics more effectively than other forms of organic matter, revealing a previously overlooked mechanism for microplastic removal in natural waters.
Adsorption of Organic Pollutants from Wastewater Using Chitosan-Based Adsorbents
This review examines how chitosan, a natural material made from shrimp and crab shells, can be used to remove organic pollutants including microplastics from wastewater. Different modified forms of chitosan can effectively absorb a range of contaminants like antibiotics, pesticides, and plastic particles from water. Since chitosan is biodegradable and non-toxic, it offers a sustainable alternative to chemical-based water treatment methods for reducing human exposure to microplastics and other pollutants.
Advances in chitin and chitosan-based materials for microplastics treatment
This review summarizes advances in using chitin and chitosan-based materials for removing microplastics from wastewater. Researchers highlight that while these natural biopolymers offer promising adsorption capabilities due to their functional groups, challenges such as low selectivity and limited mechanical strength have constrained practical use. The study covers various treatment approaches including adsorption, coagulation-flocculation, membrane filtration, and air flotation technologies.
Synergy Between Low-Cost Chitosan and Polyaluminum Chloride (PAC) Improves the Flocculation Process for River Water Treatment
Researchers developed a low-cost water treatment approach that combines chitosan, a natural material from shellfish, with a synthetic flocculant to clean river water more effectively using smaller doses. The mixture produced larger, more compact clumps that settled faster and removed up to 80% of microplastic particles from the water. This finding matters because it offers a cheaper, more environmentally friendly way to filter microplastics out of drinking water sources.
Chitin and Chitosan in Wastewater Treatment
This review examines how chitosan — a biodegradable material derived from crustacean shells — and its modified nanocomposites can be used to remove microplastics, heavy metals, and pesticides from wastewater. Chitosan-based materials show strong promise as low-cost, eco-friendly water treatment additives, though challenges around mechanical strength and acid stability still need to be overcome before widespread deployment.
Coagulative removal of polystyrene microplastics from aqueous matrices using FeCl3-chitosan system: Experimental and artificial neural network modeling
Scientists developed a water treatment method combining iron chloride and chitosan (a natural substance from shellfish) that removed up to 99.8% of polystyrene microplastics from water. The method worked effectively even on real wastewater from treatment plants, not just laboratory-prepared samples. This is a promising and practical approach for adding microplastic removal as a step in existing water treatment systems, which could help reduce human exposure through drinking water.
Impact of Chitosan Pretreatment to Reduce Microfibers Released From Synthetic Garments During Laundering
Researchers found that pre-treating synthetic garments with chitosan—a natural biopolymer—before washing significantly reduced the number of microfibers released during laundering. Since washing synthetic clothes is one of the largest sources of microplastic pollution in waterways, chitosan treatment could be a practical way to reduce this contamination at the source.
Biodegradable Nanomaterials For Removal Of Microplastics Removal In Aquatic Ecosystems
This study explores the potential of biodegradable nanomaterials made from natural polymers like chitosan, cellulose, and lignin to remove microplastics from water. These materials have high surface areas and can be engineered to selectively attract and capture plastic particles through surface interactions. The approach offers a greener alternative to conventional filtration and chemical treatment methods, which are often energy-intensive and can create secondary pollution.
A Comprehensive Review of Natural Polymer‐Based Adsorbents for Microplastic Removal
This review evaluates natural polymer-based materials, including chitosan, cellulose, and alginate, as adsorbents for removing microplastics from water. Researchers found that these renewable materials can achieve removal efficiencies often above 90% through mechanisms including physical interception, hydrophobic interactions, and electrostatic attraction, making them promising candidates for sustainable water treatment systems.
Formulation of a Chitosan-Laccase-Cutinase Composite for Bio-Coagulation and Enzymatic Degradation of Microplastics
Researchers developed a sustainable bio-coagulant using chitosan combined with laccase and cutinase enzymes to capture and break down microplastics in water. The chitosan-enzyme composite demonstrated effective coagulation and enzymatic degradation of microplastic particles, offering a more environmentally friendly alternative to conventional removal methods.
Biopolymeric Nanocomposites for Wastewater Remediation: An Overview on Recent Progress and Challenges
This review examines how nanocomposites made from natural biopolymers like chitosan can be used to filter pollutants including microplastics out of wastewater. These biodegradable materials offer a more sustainable alternative to traditional water treatment methods, which matters for human health because cleaner wastewater means fewer microplastics reaching drinking water sources.