Chloride Anion Adsorption from Wastewater Using a Chitosan/β-Cyclodextrin-Based Composite

In order to remove Cl- ions from wastewater, an adsorbent composite with high efficiency for Cl- adsorption was prepared by the crosslinking method, where chitosan (CTS) was used as the matrix to crosslink the beta-cyclodextrin polymer (beta-CDP). The preparation conditions of the composite membrane were optimized based on the chloride adsorption effect. The chloride adsorption performances of the CTS/beta-CDP complex and the CTS/beta-CDP composite membrane were significantly higher than that of the CTS-only membrane, and the composite membrane showed slightly better performance than the complex. The structure and properties of the chitosan/beta-cyclodextrin-based composite membrane were characterized by scanning electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. The prepared composite material can be used for the adsorptive removal of Cl- in water, with further research and development prospects.

Automated summary

An adsorbent composite with high efficiency for chloride ion removal from wastewater was prepared by crosslinking chitosan with beta-cyclodextrin polymer. The composite membrane showed significantly better chloride adsorption performance compared to the chitosan-only membrane, with potential applications in water treatment.