Radionuclide separations using pillared layered materials. Final report
- Texas A and M Univ., College Station, TX (United States). Research Foundation
The objective of this project is to prepare an all inorganic strontium specific sorbent or ion exchanger for the removal of highly alkaline nuclear waste solutions. A series of clays and layered titanates were pillared and calcined to convert their essentially two dimensional structure to three dimensional porous structures with high surface areas. The pillaring agents were alumina, zirconia, chromia and silica based. The pillared clays, particularly those containing Zr pillars, achieved moderate (Kd as high at 13,700 ml/g with V:m = 28) selectivities for Sr{sup 2+}. In contrast, the silica pillared titanates showed exceptional affinities for Sr{sup 2+} with Kd values in excess of 100,000 ml/g in 5M NaNO{sup 3} + 1M NaOH. These latter results suggest a more detailed study of the pillared titanates in the presence of simulants closely resembling real waste solutions.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Texas A and M Univ., College Station, TX (United States). Research Foundation
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 206512
- Report Number(s):
- LA-SUB-95-220; ON: DE96006841; TRN: 96:009379
- Resource Relation:
- Other Information: PBD: 31 Aug 1995
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
TITANATES
MATERIALS TESTING
ADSORBENTS
CHEMICAL PREPARATION
STRONTIUM
ION EXCHANGE
MICA
SMECTITE
BIOTITE
PROGRESS REPORT
ALUMINIUM OXIDES
ZIRCONIUM OXIDES
CHROMIUM OXIDES
SILICON OXIDES
DOPED MATERIALS
RADIOACTIVE WASTE PROCESSING
POROSITY
SURFACE AREA
X-RAY DIFFRACTION
EXPERIMENTAL DATA