Waste-pond treatment with immobilized liquid ion-exchangers. Final report
The feasibility of using reagent-impregnated ion-exchange fibers to separate and remove heavy-metal ions from low-concentration solutions is established. Modules containing several hundred fibers were developed and proved to be fouling-resistant. Waste ponds that were identified as targets for further development of the technology are fly-ash settling ponds at coal-fired power plants, and uranium mine and uranium mill waste ponds which contain tailings from hydrometallurgical operations or mine-water drainage. These ponds contain sufficient concentrations of suspended solids to preclude the use of other conventional metal-removal processes. Based on studies with small modules, it was shown that copper, uranium, and chromium can be removed from these ponds and that the value of the recovered metals can be expected to yield pay-back periods of two years for copper and less than one month for uranium. Conclusions and recommendations for further work are included.
- Research Organization:
- Bend Research, Inc., OR (USA)
- OSTI ID:
- 6511824
- Report Number(s):
- PB-84-179324
- Country of Publication:
- United States
- Language:
- English
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20 FOSSIL-FUELED POWER PLANTS
CHROMIUM
ION EXCHANGE
REMOVAL
COPPER
MILL TAILINGS
MATERIALS RECOVERY
URANIUM
CHEMICAL REACTIONS
ECONOMIC ANALYSIS
EXTRACTIVE METALLURGY
FIBERS
FLY ASH
ION EXCHANGE MATERIALS
PONDS
ACTINIDES
AEROSOL WASTES
ASHES
ECONOMICS
ELEMENTS
MANAGEMENT
MATERIALS
METALLURGY
METALS
PROCESSING
RECOVERY
RESIDUES
SOLID WASTES
SURFACE WATERS
TAILINGS
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
052001* - Nuclear Fuels- Waste Processing
200200 - Fossil-Fueled Power Plants- Waste Management