Published 1981 | Version v1
Journal article

The solvent extraction behavior of technetium. Pt. 2

Creators

  • 1. Oak Ridge National Lab., TN (USA). Chemical Technology Div.

Description

The solvent extraction of heptavalent technetium from aqueous hydrochloric acid by tri-n-butyl phosphate (TBP) has been studied over a wide range of TBP and HCl concentrations at 25, 40, and 600C. The extraction was found to proceed according to the reaction 3 TBP + H+ + TcO-4 reversible [HTcO4 x 3 TBP]. A discussion of possible reaction mechanisms is presented, along with values of Δ G, Δ H, Δ S, and the equilibrium constant for the extraction reaction. The solvent extraction behavior of KTcO4 in the HCl-TBP system is compared and contrasted with the behavior in the HNO3-TBP system. (orig.)

Additional details

Additional titles

Subtitle (English)
The hydrochloric acid-tri-n-butyl phosphate system

Publishing Information

Journal Title
Radiochim. Acta
Journal Volume
29
Journal Issue
2/3
Series
Radiochim. Acta.
Journal Page Range
107-111
ISSN
0033-8230