Removal of radium from acidic solutions containing same by adsorption on coal fly ash

Patent · Tue Feb 14 04:00:00 EST 1984

OSTI ID:7036623

Scheitlin, F M

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
• Country of Publication: United States
• Language: English

Related Subjects

050400* -- Nuclear Fuels-- Feed Processing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDES
ADSORPTION
AEROSOL WASTES
ALKALINE EARTH METALS
AMBIENT TEMPERATURE
AQUEOUS SOLUTIONS
ASHES
CARBONACEOUS MATERIALS
CENTRIFUGATION
COAL
DECANTATION
DISPERSIONS
DISSOLUTION
ELEMENTS
ENERGY SOURCES
FILTRATION
FLY ASH
FOSSIL FUELS
FUELS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LEACHATES
LEACHING
MATERIALS
MATRIX MATERIALS
METALS
MIXTURES
NITRIC ACID
PH VALUE
QUANTITY RATIO
RADIUM
RESIDUES
SEPARATION PROCESSES
SOLUTIONS
SORPTION
SORPTIVE PROPERTIES
SULFURIC ACID
SURFACE PROPERTIES
THORIUM
URANIUM
WASTES