Extraction of Y(III), La(III), Ce(III), Th(IV) and U(VI) ions with organophosphorous compounds


Ant E., Yurdakoç M.

ASIAN JOURNAL OF CHEMISTRY, vol.18, no.3, pp.2221-2230, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 3
  • Publication Date: 2006
  • Journal Name: ASIAN JOURNAL OF CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2221-2230
  • Keywords: organophosphorous compounds, extraction, Y(III), La(III), Ce(III), Th(IV) and U(VI), SOLVENT-EXTRACTION, BIS(2-ETHYLHEXYL)PHOSPHINIC ACID, METAL-IONS
  • Dokuz Eylül University Affiliated: Yes

Abstract

The pH-dependent extraction of Y(III), La(III), Ce(III), Th(IV) and U(VI) ions with organophosphorous extractants such as bis(2-ethylhexyl) phosphate (DEHPA), diphenyl phosphate (DPP) and diphenyl phosphinic acid (DPPA) in n-heptane, chloroform and n-amyl alcohol were investigated. All studied metal ions were extracted at highly acidic medium (pH 0.2-4.8) within 3 min at 96-99% yield using DEHPA, DPP and DPPA. The best solvent is chloroform for three studied extractants but n-heptane could be secondly usable solvent for only DEHPA. In the stripping studies, high recovery percentage was accomplished with I M NaOH and 0.1-1 M HCl for studied metal ions.