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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.
As hazardous organic and inorganic pollutants are released into the aquatic environment at an increasing rate, water quality is continually declining. The elimination of such contaminants 352from the water system is a developing field of study. Recently, biodegradable and biocompatible natural additives have gained attraction, due to their immense potential to lessen contaminants in wastewater. Chitosan and its composites have been recognized as valuable absorbents, owing to their cost-effectiveness, widespread availability, presence of hydroxyl and amino groups, and capacity to effectively eliminate various pollutants from wastewater. The practical use of chitosan-based nano-biocomposites is hindered by many challenges, such as limited selectivity, inadequate mechanical strength, and susceptibility to solubility issues in acidic conditions. Consequently, a variety of modification approaches were investigated in order to enhance the physicochemical characteristics of chitosan for the aim of treatment of wastewater. The efficacy of chitosan-based nanocomposites in the removal of microplastics, pesticides, and metals from wastewater has been well-documented. In recent times, there has been a notable surge in interest surrounding the use of chitosan-doped nanoparticles as nanocomposites for the purpose of water purification. Hence, the utilization of chitosan with appropriate modifications in the creation of such absorbents represents a pioneering approach to address the elimination of detrimental contaminants within aquatic environments, ultimately aiming to ensure the availability of safe drinking water on a global scale. The advancements in the synthesis of sorbents containing sugars, in particular chitosan biopolymers, and their uses in wastewater treatment are covered in this chapter.
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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.
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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.
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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.
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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.
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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.
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