Removal of radium from acidic solutions containing same by adsorption on coal fly ash
The invention is a process for the removal of radium from acidic aqueous solutions. In one aspect, the invention is a process for removing radium from an inorganic-acid solution. The process comprises contacting the solution with coal fly ash to effect adsorption of the radium on the ash. The radium-containing ash then is separated from the solution. The process is simple, comparatively inexpensive, and efficient. High radium-distribution coefficients are obtained even at room temperature. Coal fly ash is an inexpensive, acid-resistant, high-surface-area material which is available in large quantities throughout the United States. The invention is applicable, for example, to the recovery of /sup 226/Ra from nitric acid solutions which have been used to leach radium from uranium-mill tailings.
- Assignee:
- Dept. of Energy
- Patent Number(s):
- US 4431609
- OSTI ID:
- 7036623
- Resource Relation:
- Patent File Date: Filed date 27 Jan 1983; Other Information: PAT-APPL-461301
- Country of Publication:
- United States
- Language:
- English
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Process for the removal of radium from acidic solutions containing same
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Related Subjects
FLY ASH
SORPTIVE PROPERTIES
RADIUM
ADSORPTION
AMBIENT TEMPERATURE
AQUEOUS SOLUTIONS
CENTRIFUGATION
COAL
DECANTATION
FILTRATION
HYDROCHLORIC ACID
LEACHATES
LEACHING
MATRIX MATERIALS
NITRIC ACID
PH VALUE
QUANTITY RATIO
SULFURIC ACID
THORIUM
URANIUM
ACTINIDES
AEROSOL WASTES
ALKALINE EARTH METALS
ASHES
CARBONACEOUS MATERIALS
DISPERSIONS
DISSOLUTION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATERIALS
METALS
MIXTURES
RESIDUES
SEPARATION PROCESSES
SOLUTIONS
SORPTION
SURFACE PROPERTIES
WASTES
050400* - Nuclear Fuels- Feed Processing