Ion-exchange properties of potassium nickel hexacyanoferrate(II) compounds
- 1. Tohoku Univ., Sendai (Japan)
- 2. Power Reactor and Nuclear Fuel Development Corp., Tokai, Ibaraki (Japan)
Description
A series of nonstoichiometric compounds K2-xNix/2[NiFe(CN)6]nH2O was prepared by varying Ni/Fe molar ratio from 0.1 to 100. The products had a face-centered cubic (fcc) structure, and the lattice parameter slightly increased with decreasing K/Fe ratio. The uptake rate of Cs+ was enhanced at lower K/Fe ratio below 1.32 and reached equilibrium within 8 h for the products with K/Fe below 0.86. The distribution coefficients of Cs+ on the products were above 104 cm3/g in the presence of 1 mol/dm3 Na+, K+ or H+, while those of other nuclides were less than 102, indicating high selectivity of the product to Cs+. The uptake of Cs+ followed a Langmuir-type isotherm and the maximum amount of Cs+ adsorbed was evaluated to be 1.0 to 1.5 mmol/g. Cesium nuclides were efficiently removed from a simulated high-level liquid waste
Additional details
Publishing Information
- Journal Title
- Solvent Extraction and Ion Exchange
- Journal Volume
- 16
- Journal Issue
- 4
- Journal Page Range
- p. 1013-1031
- ISSN
- 0736-6299
- CODEN
- SEIEDB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 30038580
- Subject category
- S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Descriptors DEI
- ADSORPTION ISOTHERMS; CESIUM; CRYSTAL STRUCTURE; FERRATES; HIGH-LEVEL RADIOACTIVE WASTES; ION EXCHANGE; NICKEL COMPOUNDS; POTASSIUM COMPOUNDS; RADIOACTIVE WASTE PROCESSING; SORPTIVE PROPERTIES; SYNTHESIS
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALKALI METALS; ELEMENTS; IRON COMPOUNDS; MANAGEMENT; MATERIALS; METALS; OXYGEN COMPOUNDS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; SURFACE PROPERTIES; TRANSITION ELEMENT COMPOUNDS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES