Cyclodextrin-based adsorbents for the removal of pollutants from wastewater: a review

• Published in: Environmental science and pollution research international Vol. 28; no. 2; pp. 1317 - 1340
• Main Authors: Tian, Bingren, Hua, Shiyao, Tian, Yu, Liu, Jiayue
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2021; Springer Nature B.V
• Subjects: Adsorbents; Adsorption; Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Cyclodextrin; Cyclodextrins; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Environmental Pollutants; Environmental science; Hydrophobicity; Industrial applications; Metal ions; Organic chemicals; Organic chemistry; Pesticides; Pharmaceutical Preparations; Pollutant removal; Pollutants; Pollution control; Pollution effects; Regeneration; Review Article; Waste Water Technology; Wastewater; Wastewater pollution; Wastewater treatment; Water Management; Water Pollutants, Chemical - analysis; Water pollution; Water Pollution Control; Water pollution treatment; Water Purification; Water treatment; Cyclodextrin; Water pollution; Application; Mechanism; Adsorbents
• ISSN: 0944-1344; 1614-7499
• DOI: 10.1007/s11356-020-11168-2

Water is a vital substance that constitutes biological structures and sustains life. However, water pollution is currently among the major environmental challenges and has attracted increasing study attention. How to handle contaminated water now mainly focuses on removing or reducing the pollutants from the wastewater. Cyclodextrin derivatives, possessing external hydrophilic and internal hydrophobic properties, have been recognized as new-generation adsorbents to exert positive effects on water pollution treatment. This article outlines recent contributions of cyclodextrin-based adsorbents on wastewater treatment, highlighting different adsorption mechanisms of cyclodextrin-based adsorbents under different influencing factors. The crosslinked and immobilized cyclodextrin-based adsorbents all displayed outstanding adsorption capacities. Particularly, according to specific pollutants including metal ions, organic chemicals, pesticides, and drugs in wastewater, this article has classified and organized various cyclodextrin-based adsorbents into tables, which could pave an intuitive shortcut for designing and developing efficient cyclodextrin-based adsorbents for targeted wastewater pollutants. Besides, this article specially discusses cost-effectiveness and regeneration performance of current cyclodextrin-based adsorbents. Finally, the challenges and future directions of cyclodextrin-based adsorbents are prospected in this article, which may shed substantial light on practical industrial applications of cyclodextrin-based adsorbents.