β-cyclodextrin and its derivatives: application in wastewater treatment

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A recent review on β-cyclodextrin (β-CD)–based polymers and nanosystems shows that as adsorbents they present high efficiency and capability to remove inorganic, organic, and heavy metal impurities from wastewater as compared to conventional methods of water purification. The hydrophobic cavities form inclusion complexes through host–guest interactions. The hydroxyl groups form sites of hydrogen bonding and electrostatic interaction with pollutants. Additionally, they are also the sites of modification to bring about different derivatisation and polymerization reactions in order to impart desirable properties for efficient adsorption material. This article comprises of various derivatives of β-cyclodextrins: their nanoparticulate systems and their characterization and applications to remove different types of impurities from wastewater. The chemical reactions for their synthesis and mechanism of adsorption are highlighted.

Chodankar, D., Vora, A. & Kanhed, A. β-cyclodextrin and its derivatives: application in wastewater treatment. Environ Sci Pollut Res (2021). https://doi.org/10.1007/s11356-021-17014-3

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