Chinese Journal of Analytical Chemistry 2014;(3):446-451

doi:10.3724/SP.J.1096.2014.30901

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

Hongmin CUI ; Ji CHEN ; Hualing YANG ; Wei WANG ; Yu LIU ; Yuefeng DENG ; Dongli ZHANG

Keywords

Aliquat 336; Chelating adsorbent; Chitosan; Enrichment and separation; Yttrium(Ⅲ)

Country

China

Language

Chinese

Abstract

Aliquat 336 functionalized chelating adsorbent derived from chitosan for enrichment and separation of Y(Ⅲ) were investigated by static adsorption method. The adsorption of Y(Ⅲ) was greatly influenced by the pH of solution, and reached maximum at 20 ℃ using 90 mg/L Y(Ⅲ) at pH 4. 9, and the adsorption of Y(Ⅲ) followed a pseudo-second-order kinetics model and the Langmuir isotherm model. The reduction of Y(Ⅲ) 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.