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Advances in chitin and chitosan-based materials for microplastics treatment
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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.
Microplastics (MPs) have emerged as widespread environmental pollutants in aquatic ecosystems, primarily due to the extensive use of plastic products, their persistent nature, and improper disposal methods. It is essential to develop effective purification methods to treat the hazardous MPs in water. Chitin and chitosan (CS) have gained attention as promising adsorbents for MPs because of their low cost, abundance, biodegradability, and the presence of functional groups such as amino and hydroxyl groups, which facilitate the removal of various toxins from wastewater. However, challenges such as low selectivity, limited mechanical strength, and solubility in acidic environments have constrained their practical applications. Numerous modifications to the physicochemical properties of chitin and CS have been investigated to overcome these challenges. In this review, we summarized the sources, extraction techniques, and properties of chitin and CS. What's more, we focused on the application of chitin and CS-based materials for the removal of MPs from wastewater, including adsorption, coagulation-flocculation, membrane technology, and air flotation technology.
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Chitin Materials: Obtaining; Cleaning of Drains
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This review covers chitin and its derivatives (chitosan and chitosan-melanin complexes) as natural biopolymers with potential for wastewater treatment. Researchers discuss their ability to adsorb heavy metals and suspended solids including microplastics from contaminated water streams. The paper positions chitin-based materials as a sustainable option for removing emerging pollutants from wastewater.
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.
Chitin and Chitosan in Wastewater Treatment
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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.
Bioadsorbents for removal of microplastics from water ecosystems: a review
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This review analyzes over 200 studies on using natural biological materials, called bioadsorbents, to remove microplastics from water. Researchers found that materials like chitosan, biochar, and cellulose show strong potential for capturing microplastic particles from contaminated water. The study highlights bioadsorbents as a promising, eco-friendly alternative to conventional water treatment methods for addressing microplastic pollution.
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.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.