Removal of zirconium from high-level liquid waste by silica gel absorption
- 1. Tsinghua Univ., Beijing (China). Inst. of Nuclear and New Energy Technology
- 2. Lanzhou Nuclear Fuel Plant, Lanzhou (China)
Description
The static and dynamic adsorption behaviors of zirconium and plutonium (IV) on silica gel were studied. In 1.0-4.0 mol/L HNO3 solution, the static capacity of Zr on silica gel is about 20 mg/g, and the adsorption distribution coefficient of Pu(IV) is 0.7-1.4 mL/g. The adsorption of Zr and Pu increases with the decrease of aqueous acidity. The results of dynamic adsorption show that the effective capacity of dynamic adsorption for silica gel column is 3.5 times of bed volume. Zr and Pu absorbed in column can be partly eluted by 2 mol/L HNO3. 0.2 mol/L H2C2O4 can be used to elute Zr and Pu completely. The silica gel column eluted by 0.2 mol/L H2C2O4 can be reused six times and the position of dynamic adsorption curve of each time is the same. (authors)
Additional details
Publishing Information
- Journal Title
- Atomic Energy Science and Technology
- Journal Volume
- 41
- Journal Issue
- 1
- Journal Page Range
- p. 46-51
- ISSN
- 1000-6931
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 39001882
- Subject category
- S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
- Descriptors DEI
- ADSORPTION; CAPACITY; DISTRIBUTION FUNCTIONS; ELUTRIATION; HIGH-LEVEL RADIOACTIVE WASTES; NITRIC ACID; PH VALUE; PLUTONIUM NITRATES; REMOVAL; SILICA GEL; SPENT FUELS; ZIRCONIUM NITRATES
- Descriptors DEC
- ACTINIDE COMPOUNDS; ADSORBENTS; ENERGY SOURCES; FUELS; FUNCTIONS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; MATERIALS; NITRATES; NITROGEN COMPOUNDS; NUCLEAR FUELS; OXYGEN COMPOUNDS; PLUTONIUM COMPOUNDS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; REACTOR MATERIALS; SEPARATION PROCESSES; SORPTION; TRANSITION ELEMENT COMPOUNDS; TRANSURANIUM COMPOUNDS; WASTES; ZIRCONIUM COMPOUNDS
Optional Information
- Notes
- 6 figs., 2 tabs., 5 refs.