RESEARCH AND DEVELOPMENT ACTIVITIES FIXATION OF RADIOACTIVE RESIDUES. Quarterly Progress Report, April-June 1960
Progress is reported in research and development work in the field of fixation of residues from radioactive wastes. The areas of investigation include studies of various wastetreatment proeesses, such as calcination, fixation in silicates, and utilization of centain minerals having selective retentivity for centain isotopes or groups of isotopes, as well as waste-disposal studies and economic aspects of both treatment and disposal. Waste calcination studies were continued in the fluid-bed calciner using simuiated high acid Purex waste as feed. A batch calcination facility capable of bandling pots 54-in. high and 14-in. in diameter was built. Studies were continued on methods of improving the thermal conductivity of calcined powder. Data are included on the effect of feed rate, steam pressure, and sugar concentration on powder holdup on the column walls and on the extent of calcination of the powder formed from Purex waste. Neutralized Zirflex waste was successfully calcined. Corrosion tests were continued. Laboratory experiments were conducted to study the effect of gamma irradiation on the ability of clinoptilotite to absorb cesium. studies were also made on the influence of solution pH on anion replacement reactions in minerals. Laboratory studies to investigate the possibility of direct decontamination of soms types of high-level wastes gave promising results. The effectiveness of clinoptilolite columns was tested with aged Redox high-salt waste, aluminum coated wastes, and Purex high-salt wastes. Data are tabulated from tests on cesium removal by clinoptilolite. The arrangement of the micro pilot plant used in the studies is illustrated photographically. Several metals were examined to determine their ability to decontaminate ruthenium. (For preceding period, see HW-65209.) (C.H.)
- Research Organization:
- General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
- DOE Contract Number:
- AT(45-1)-1350
- NSA Number:
- NSA-15-012635
- OSTI ID:
- 4071247
- Report Number(s):
- HW-66571
- Country of Publication:
- United States
- Language:
- English
Similar Records
Research and development activities: fixation of radioactive residues. Quarterly progress report, July-September 1960
RESEARCH AND DEVELOPMENT ACTIVITIES, FIXATION OF RADIOACTIVE RESIDUES QUARTERLY PROGRESS REPORT FOR JULY-SEPTEMBER 1960
Related Subjects
ADSORPTION
ALUMINUM
CALCINATION
CESIUM
COATING
CORROSION
DECONTAMINATION
ECONOMICS
ION EXCHANGE MATERIALS
ISOTOPES
METALS
MINERALS
POWDERS
PRESSURE
PUREX PROCESS
RADIATION EFFECTS
REDOX PROCESS
RUTHENIUM
SILICATES
SOLVENT EXTRACTION
STEAM
SUGARS
THERMAL CONDUCTIVITY
WASTE DISPOSAL
WASTE DISPOSAL AND PROCESSING