Published 1981
| Version v1
Journal article
Solvent extraction of heptavalent technetium by tributyl phosphate
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.
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 13682937
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Descriptors DEI
- ADDUCTS; AQUEOUS SOLUTIONS; CHEMICAL REACTION KINETICS; DODECANE; ENTHALPY; ENTROPY; EQUILIBRIUM; EXPERIMENTAL DATA; HYDROCHLORIC ACID; MEDIUM TEMPERATURE; NITRIC ACID; ORGANIC SOLVENTS; QUANTITATIVE CHEMICAL ANALYSIS; QUANTITY RATIO; SOLVENT EXTRACTION; TBP; TECHNETIUM; TECHNETIUM COMPLEXES; TEMPERATURE DEPENDENCE; THERMODYNAMIC PROPERTIES
- Descriptors DEC
- ALKANES; BUTYL PHOSPHATES; CHEMICAL ANALYSIS; CHLORINE COMPOUNDS; COMPLEXES; DATA; DISPERSIONS; ELEMENTS; ESTERS; HALOGEN COMPOUNDS; HOMOGENEOUS MIXTURES; HYDROCARBONS; HYDROGEN COMPOUNDS; INFORMATION; INORGANIC ACIDS; KINETICS; METALS; MIXTURES; NITROGEN COMPOUNDS; NONAQUEOUS SOLVENTS; NUMERICAL DATA; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; PHYSICAL PROPERTIES; REACTION KINETICS; SEPARATION PROCESSES; SOLUTIONS; SOLVENTS; TRANSITION ELEMENT COMPLEXES; TRANSITION ELEMENTS
Optional Information
- Secondary number(s)
- CONF-810520--.