Use of o-phenylene dioxydiacetic acid impregnated in Amberlite XAD resin for separation and preconcentration of uranium(VI) and thorium(IV)

SEYHAN BOZKURT S., MERDİVAN M., Demirel N.

JOURNAL OF HAZARDOUS MATERIALS, vol.152, no.1, pp.79-84, 2008 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 152 Issue: 1
  • Publication Date: 2008
  • Doi Number: 10.1016/j.jhazmat.2007.06.065
  • Journal Name: JOURNAL OF HAZARDOUS MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.79-84
  • Keywords: sorption, uranium(VI), thorium(IV), XAD-2000, o-phenylene dioxydiacetic acid, POLYMERIC SUPPORT, CHELATING RESIN, SORPTION, ENRICHMENT, LANTHANUM(III), EXTRACTION, BEHAVIOR, MATRIX, TH(IV), U(VI)
  • Dokuz Eylül University Affiliated: Yes

Abstract

The impregnation of o-phenylene dioxydiacetic acid (OPDA) into a polymeric matrix, Amberlite XAD-2000, is reported and was characterized by infrared spectroscopy. The amount of attached OPDA to the polymer resin was found to be 1.77 mmol g(-1) resin. The resin was used for the sorption of U(VI) and Th(IV) from aqueous solution. This sorbent was capable of preconcentrating U(VI) and Th(IV) from weakly acidic or neutral solution. The retained metals were eluted sequentially using 0.25 mol L-1 HCl for U(VI) and I mol L-1 HCl for Th(IV) and determined spectrophotometrically using arsenazo-(III). The capacity of the resin for U(VI) and Th(IV) was found to be 0.121 and 0.113 mmol g(-1), respectively. The impregnated resin exhibits a high chemical stability, reusability and fast equilibration. The method was used for the determination of U(VI) and Th(IV) in synthetic samples and rock samples. (C) 2007 Elsevier B.V. All rights reserved.