Coprecipitation of radium with barium sulfate from calcium-containing solutions
Precipitation of radium with barium sulfate from solutions obtained on treatment of thorium-containing industrial wastes has been studied by stepwise regressive analysis. The mathematical model of the process selected on an Elektronika-DZ-28 computer made it possible to prove that, unlike calcium-free solutions, coprecipitation of radium with barium sulfate from solutions highly concentrated in calcium depends on the ratio of the amount of sulfuric acid to the sum of the amounts of barium, calcium, and magnesium, the influence of this factor on the degree of radium precipitation being negative: the radioactivity of the filtrate intensifies. This deviation from the mechanisms of radium coprecipitation in pure solutions has been explained by the phenomenon of blocking of the carrier surface by the calcium sulfate crystals.
- OSTI ID:
- 6280533
- Journal Information:
- Sov. Radiochem. (Engl. Transl.); (United States), Vol. 30:2; Other Information: Translated from Radiokhimiya; 30: No. 2, 281-285(Mar-Apr 1988)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
BARIUM SULFATES
COPRECIPITATION
INDUSTRIAL WASTES
RADIOCHEMICAL ANALYSIS
RADIUM
ACTIVATION ENERGY
CALCIUM CHLORIDES
CALCIUM SULFATES
COMPUTERIZED SIMULATION
DEACTIVATION
DECONTAMINATION
FILTRATION
MAGNESIUM CHLORIDES
MATHEMATICAL MODELS
POTASSIUM CHLORIDES
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTES
RADIOACTIVITY
RADIUM 224
RADIUM 228
RADIUM CHLORIDES
REGRESSION ANALYSIS
SULFURIC ACID
THORIUM
WASTE WATER
ACTINIDES
ALKALI METAL COMPOUNDS
ALKALINE EARTH ISOTOPES
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
ALPHA DECAY RADIOISOTOPES
BARIUM COMPOUNDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CARBON 14 DECAY RADIOISOTOPES
CHEMICAL ANALYSIS
CHLORIDES
CHLORINE COMPOUNDS
CLEANING
DAYS LIVING RADIOISOTOPES
ELEMENTS
ENERGY
EVEN-EVEN NUCLEI
HALIDES
HALOGEN COMPOUNDS
HEAVY NUCLEI
HYDROGEN COMPOUNDS
INORGANIC ACIDS
ISOTOPES
LIQUID WASTES
MAGNESIUM COMPOUNDS
MANAGEMENT
MATERIALS
MATHEMATICS
METALS
NUCLEI
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
PRECIPITATION
PROCESSING
QUANTITATIVE CHEMICAL ANALYSIS
RADIOACTIVE MATERIALS
RADIOISOTOPES
RADIUM COMPOUNDS
RADIUM ISOTOPES
SEPARATION PROCESSES
SIMULATION
STATISTICS
SULFATES
SULFUR COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER
YEARS LIVING RADIOISOTOPES
520300* - Environment
Aquatic- Radioactive Materials Monitoring & Transport- (1989)
520101 - Environment
Aquatic- Basic Studies- Radiometric Techniques- (-1989)
400702 - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials