Enrichment and Separation of Y. from Dilute Solutions Using Aliquat 336 Functionalized Chelating Adsorbent Derived from Chitosan

Aliquat 336 functionalized chelating adsorbent derived from chitosan for enrichment and separation of Yalp were investigated by static adsorption method. The adsorption of Yalp was greatly influenced by the pH of solution, and reached maximum at 20 degrees C using 90 mg/L Y alp at pH 4. 9, and the adsorption of Y followed a pseudo-second-order kinetics model and the Langmuir isotherm model. The reduction of Y adsorption with the increasing of temperature meant that the adsorption process was exothermic. XPS analysis demonstrated that both cations and anions of the adsorbent were involved in adsorption process, thereby resulting in an improved adsorption of Y(III) The adsorbent was thus efficient for enrichment and separation of rare earths from waste rare earth phosphor.