Published 1981 | Version v1
Journal article

Solvent extraction of heptavalent technetium by tributyl phosphate

Creators

  • 1. Oak Ridge National Lab., TN

Description

The solvent extraction of heptavalent technetium from aqueous nitric or hydrochloric acid by tributyl phosphate in n-dodecane (TBP-NDD) has been studied over a wide range of TBP and acid concentrations at 25, 50, and 600C. The extraction was found to proceed according to the reaction 3TBP + H+ + TcO4- → (HTcO4 3TBP). A discussion of possible reaction mechanisms is presented, along with values for ΔG, ΔH, ΔS, and the equilibrium constant for the extraction reaction. Finally, evidence for the coextraction of technetium by uranyl ions is discussed. 10 figures, 5 tables

Additional details

Publishing Information

Journal Title
Sep. Sci. Technol.
Journal Volume
16
Journal Issue
9
Series
Sep. Sci. Technol.
Journal Page Range
1157-1179
ISSN
0149-6395

Conference

Title
Symposium on separation science and technology for energy applications.
Dates
5 - 8 May 1981.
Place
Gatlinburg, TN, USA.

Optional Information

Secondary number(s)
CONF-810520--.