Immobilization of sodium and phosphorus-bearing PW-7a waste in SYNROC. Progress report. [SYNROC C]

Technical Report · Mon Aug 09 00:00:00 EDT 1982

DOI:https://doi.org/10.2172/6749181· OSTI ID:6749181

Ringwood, A E

The phosphorus, sodium and gadolinium-rich PW-7a waste can be successfully incorporated in SYNROC-C. However, a new accessory phase, a Ca,Na,Ba phosphate isostructural with Ca/sub 5/Na/sub 2/(PO/sub 4/)/sub 4/ apppears in the SYNROC mineralogy. There is no evidence for the partition of key radionuclides (e.g. Sr, REE and hence actinides) into this phosphate. Its poor resistance to groundwater dissolution, whilst hardly desirable, may therefore not have a serious effect on the leaching performance of SYNROC containing PW-7a. 9 tables.

• Research Organization: Australian National Univ., Canberra. Research School of Earth Sciences
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6749181
• Report Number(s): UCRL-15480; ON: DE83000734
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
RADIOACTIVE WASTE PROCESSING
HIGH-LEVEL RADIOACTIVE WASTES
INTERMEDIATE-LEVEL RADIOACTIVE WASTES
SOLIDIFICATION
SYNROC PROCESS
EVALUATION
SYNTHETIC ROCKS
CHEMICAL COMPOSITION
EXPERIMENTAL DATA
GADOLINIUM OXIDES
MIXTURES
PHOSPHORUS OXIDES
SODIUM OXIDES
ALKALI METAL COMPOUNDS
CHALCOGENIDES
DATA
DISPERSIONS
GADOLINIUM COMPOUNDS
INFORMATION
MANAGEMENT
MATERIALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHORUS COMPOUNDS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RARE EARTH COMPOUNDS
ROCKS
SODIUM COMPOUNDS
SYNTHETIC MATERIALS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
052001* - Nuclear Fuels- Waste Processing
360602 - Other Materials- Structure & Phase Studies