Transport study of hafnium(IV) and zirconium(IV) ions mutual separation by using Tri-n-butyl phosphate-xylene-based supported liquid membranes
- Pakistan Inst. of Nuclear Science and Technology, Islamabad (Pakistan)
A Hf transport study through supported liquid membranes has been carried out to determine flux and permeability data for this metal ion. Tri-n-butyl phosphate (TBP)-xylene-based liquid membranes supported in polypropylene hydrophobic microporous film have been used. These data for hafnium and the previous data for zirconium have furnished the Zr to Hf flux ratio (S) as a function of nitric acid and TBP concentrations of the order of 12 in a single stage at room temperature. Optimum conditions for the separation of these two metal ions appear to 5-6 TBP mol/dm{sup 3} HNO{sub 3}, concentrations {le} 2.93 mol/dm{sup 3}, and 10C. The value of S from an aqueous solution containing 2.4% Hf with respect to Zr has been found to be >125 at 10C and 1.78 mol/dm{sup 3} TBP concentration in the membrane. The technique appears to be feasible for purification of Zr respect to Hf or vice versa.
- OSTI ID:
- 5226631
- Journal Information:
- Separation Science and Technology; (United States), Journal Name: Separation Science and Technology; (United States) Vol. 27:2; ISSN SSTED; ISSN 0149-6395
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thorium ions transport across Tri-n-butyl phosphate-benzene based supported liquid membranes
Transport of Mo(VI) ions through tri-n-octylamine-xylene based supported liquid membranes
Related Subjects
400105* -- Separation Procedures
ALKYLATED AROMATICS
AROMATICS
BUTYL PHOSPHATES
DATA
ELEMENTS
ESTERS
EXPERIMENTAL DATA
HAFNIUM
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
MATHEMATICAL MODELS
MEMBRANE TRANSPORT
MEMBRANES
METALS
NITRIC ACID
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PERMEABILITY
PHOSPHORIC ACID ESTERS
PURIFICATION
QUANTITY RATIO
SUPPORTED LIQUID MEMBRANES
TBP
TRANSITION ELEMENTS
XYLENES
ZIRCONIUM