Adsorption of salicylic acid in aqueous solution by a water-compatible hyper-cross-linked resin functionalized with amino-group

TLDR: In this paper, a water-compatible hyper-cross-linked resin functionalized with amino-group (GQ-04) was synthesized to remove salicylic acid (SA) in aqueous solution.

Abstract: On account of the high toxicity of nitrobenzene, 1,2-dichloroethane was used as solvent A novel water-compatible hyper-cross-linked resin functionalized with amino-group (denoted as GQ-04) was synthesized to remove salicylic acid (SA) in aqueous solution The maximum adsorption capacity of SA onto GQ-04 was observed at pH of 188 The adsorption capacity increased with the increasing salt concentration The adsorption kinetic data obeyed the pseudo-second-order rate equation and the adsorption isotherms can be characterized by Freundlich model The intraparticle diffusion was the main rate-controlling step The saturated adsorption quantity of SA was up to 1199 mg·mL-1 according to the dynamic adsorption at 293 K The resin could be regenerated by the 6 BV mixed solution of 80% ethanol and 05 mol/L NaOH The size matching and hydrogen bonding between GQ-04 and SA and the micropore structure resulted in the larger adsorption capacity in comparison with XAD-4 and H103 resin © 2012 Wiley Periodicals, Inc J Appl Polym Sci, 2013