New Calix[4]arene Appended Amberlite XAD-4 Resin with Versatile Perchlorate Removal Efficiency

作者：Memon Shahabuddin^*; Bhatti Asif Ali; Memon Najma

来源：Journal of Chemical and Engineering Data, 2013, 58(10): 2819-2827.

DOI：10.1021/je400554q

Perchlorate removal from an aqueous environment was carried out by newly synthesized 25,27-bis-(N,N-dimethyl-2-aminoethyl)carbonylmethoxy-26,28-dihydroicycalix[4]arene appended Amberlite XAD-4 resin (Resin-5). Different parameters such as pH, dosage, concentration, interference, equilibrium isotherms, kinetics, and thermodynamics were explored. Experimental data were treated using equilibrium models such as Freundlich, Langmuir, and the Dubinin-Radushkevich (D-R) model, with determination of each characteristic parameter of isotherm. The adsorption mechanism was investigated by Reichenberg (R-B) and Morris-Webster equations, and it is concluded that the adsorption process is endothermic and spontaneous in nature at higher temperature. The kinetic adsorption experiments show that the adsorption process follows pseudo-second-order kinetics. The results show that newly synthesized resin has capability to efficiently remove perchlorate from aqueous media.

• 出版日期2013-10