Ion-exchange fibers for uranium recovery. Final report, September 8, 1980-November 6, 1981
Development was initiated of ion-exchange fibers that could be used to extract uranium ions from solutions containing 10 ppM uranium or less, such as acid mine waters, leach solutions, various natural groundwaters, and perhaps even seawater. These fibers would ultimately be used to make large, loosely woven mats that could be placed in dilute solutions or uranium. Periodically, the mats would be removed and stripped of uranium with an appropriate solution. Two major approaches to making these fibers were investigated. One involved incorporating conventional amine solvent-extraction reagents into the pores of microporous, polysulfone fibers. This approach was unsuccessful due to a rapid loss of the reagents from the fibers. The second approach was to incorporate water-swollen gels of polymeric amines into the pores of the fibers. These fibers effectively extracted uranium from solutions containing 10 ppM uranium. An economic analysis based on the projected costs of mats made from these fibers and on the value of the uranium recovered by the fibers shows that the mats could be used to economically recover uranium from dilute solutions and that they offer a substantial cost advantage over conventional ion exchange.
- Research Organization:
- Bend Research, Inc., OR (USA)
- DOE Contract Number:
- AC06-80ER10738
- OSTI ID:
- 6033343
- Report Number(s):
- DOE/ER/10738-1; ON: DE83013634
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
URANIUM
ION EXCHANGE
ACID MINE DRAINAGE
AMINES
ECONOMICS
FIBERS
GELS
GROUND WATER
ION EXCHANGE MATERIALS
LEACHING
SEAWATER
TRACE AMOUNTS
ACTINIDES
COLLOIDS
DISPERSIONS
DISSOLUTION
ELEMENTS
HYDROGEN COMPOUNDS
MATERIALS
METALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SEPARATION PROCESSES
WATER
050400* - Nuclear Fuels- Feed Processing
400105 - Separation Procedures