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Adsorption of Organic Pollutants from Wastewater Using Chitosan-Based Adsorbents
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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.
Among the naturally occurring polysaccharides, chitosan is the second-most abundant polysaccharide. It is obtained from chitin through a process known as deacetylation. It is biodegradable, biocompatible, and non-toxic, which made it suitable for various environmental applications. In the present review, the structure, properties, and characteristics of chitosan were discussed. In addition, the modified forms of chitosan (including cross-linked, nanoparticles, functionalized, and grafted forms of chitosan) were enumerated. The applications of these modified forms of chitosan in the adsorption of organic pollutants (such as antibiotics, dyes, pesticides, microplastics, polyaromatic hydrocarbons, parabens, and polychlorobiphenyls) are comprehensively reviewed. Furthermore, the mechanism of adsorption, adsorption isotherm (Langmuir and Freundlich), and the kinetic models are highlighted. Finally, the economic viability assessment and environmental impact of processing tons of shrimp shells into chitosan annually were discussed.
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Chitosan: A Novel Approach and Sustainable Way to Remove Contaminants and Treat Wastewater
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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.
Developments and application of chitosan-based adsorbents for wastewater treatments
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This review examines the use of chitosan, a natural material derived from crustacean shells, as an adsorbent for removing pollutants from wastewater. Researchers found that chitosan-based composites, especially those enhanced with nanoparticles, are effective at removing metals, pharmaceuticals, pesticides, and microplastics from water. The material's low cost, biodegradability, and versatility make it a promising tool for addressing water contamination worldwide.
Chitosan-based hybrid composites for emerging organic micropollutants removal from wastewater: Recent advancement, mechanism, up-scaling, and challenges
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Our tap water and wastewater often contain tiny amounts of drugs, pesticides, and even microplastics that standard treatment plants struggle to remove completely. This review paper rounds up existing research on chitosan—a natural material made from shrimp and crab shells—showing how scientists are turning it into sponge-like filters that can soak up these unwanted pollutants from water. While the technology looks promising, the researchers note it still faces hurdles before it can be scaled up for widespread use in real water treatment facilities.
Advances in Chitosan-Based Materials for Application in Catalysis and Adsorption of Emerging Contaminants
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This review covers how chitosan, a natural material derived from shellfish shells, can be used to remove emerging contaminants including microplastics, pharmaceuticals, and PFAS chemicals from water. Chitosan-based materials can be shaped into particles, membranes, and gels that effectively absorb a wide range of pollutants, offering a more sustainable alternative to conventional water treatment methods for reducing human exposure to harmful contaminants.
Chitosan-based carbonaceous adsorbent for wastewater treatment applications
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Scientists are improving chitosan (a natural material made from shrimp and crab shells) by combining it with carbon-based materials to create better water filters. This review pulls together existing research showing these upgraded filters can remove harmful contaminants from wastewater—including heavy metals, microplastics, pharmaceuticals, and disease-causing microbes—more effectively than chitosan alone. Better wastewater treatment matters for human health because it helps keep dangerous pollutants and microplastics out of the water we eventually drink or use.
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