Preparation and Enrichment Properties of Magnetic Dodecyl Chitosan/Silica Composite for Emerging Bisphenol Contaminants

Abstract

Magnetic dodecyl chitosan/silica composite was synthesized and characterized for the enrichment of emerging bisphenol contaminants. The result demonstrated that bispehnol A, bisphenol AF, bisphenol F, and bisphenol S can be efficiently extracted via the resulting composite from aqueous solution. The adsorption rate of four investigated bisphenols on the resulting composite was achieved in the range of 87–99% within 15 min. Bispehnol A was taken as a representative adsorbate to investigate the adsorption studies in detail. The hydrophobic interaction was proposed as the principal mechanism for the adsorption of BPs. The satisfactory reusability of the resulting composite can be quickly achieved by magnetic separation technologies. Magnetic dodecyl chitosan/silica composite has a potential to be applied as a type of efficient and easily recyclable sorbent for the removal of trace organic pollutants from aqueous sample.

Emerging pollutants—Part II: Treatment

“…The porous polycalix [4]arenes can be regenerated several times through a simple cleaning procedure, while its performance remains basically unchanged and its energy consumption is lower than that required by activated carbon. Hu, Liu, Liu, Wu, and Zhang (2018) synthesized magnetic dodecyl chitosan/silica composites and studied their adsorption properties for bisphenol pollutants in aqueous solution. The results showed that in 15 min, 87%-99% of bisphenol A, bisphenol AF, bisphenol F, and bisphenol S in aqueous solution can be adsorbed by this composite.…”