Extraction of rare earth metal (III) nitrates from multicomponent solutions with diisooctyl methylphosphonate - Tri-n-Butyl phosphate mixtures

Journal Article · Thu Oct 20 00:00:00 EDT 1994 · Russian Journal of Applied Chemistry

OSTI ID:150593

Pyartman, A K; Puzikov, E A; Bogatov, K B ^[1]

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1. St. Petersburg Technological Institute (Russian Federation)

A study has been made of the extraction of lanthanides (III) (samarium-lutetium) and yttrium by mixtures of diisooctyl methylphosphonate and tri-n-butyl phosphate taken in various ratios (T = 298.15 K, pH 2). Extraction constants are estimated. Physicochemical and mathematical models have been proposed for the distribution of lanthanides (III), depending on the composition of the initial raw material, the total lanthanide concentration in the aqueous phase, and the extractant concentrations in the organic phase. Optimal conditions have been determined for separating yttrium-group concentrations by using mixed neutral organophosphorus extractants.

• OSTI ID: 150593
• Journal Information: Russian Journal of Applied Chemistry, Vol. 67, Issue 5; Other Information: PBD: 20 Oct 1994; TN: Translated from Zhurnal Prikladnoi Khimii; 67: No. 5, 762-766(May 1994)
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
RARE EARTHS
EXTRACTION
YTTRIUM
PHOSPHONATES
TBP
MATHEMATICAL MODELS