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Synthesis of dihydroxyurea and its application to the U/Pu split in the PUREX process
- Source :
- Journal of Radioanalytical and Nuclear Chemistry. 279:293-299
- Publication Year :
- 2008
- Publisher :
- Springer Science and Business Media LLC, 2008.
-
Abstract
- Dihydroxyurea (DHU) was synthesized using tri-associated solid phosgene [bis(trichloromethyl) carbonate] dissolved in dioxane and hydroxylamine hydrochloride dissolved in potassium acetate solution. The reduction of Pu(IV) by DHU was investigated using UV-Vis spectrophotometry. The reduction back-extraction behavior of Pu(IV) in 30% tri-butyl phosphate/kerosene was firstly investigated under conditions of various temperature, various DHU and HNO3 concentrations and various phase contact times. The results showed that Pu(IV) in the organic phase can be stripped rapidly to the aqueous phase by DHU. Simulating the 1B contactor of the PUREX process using a 0.1M DHU in 0.36M nitric acid solution as the stripping agent, the separation factors of uranium/plutonium can reach 2.1 . 10 4 . This indicates that DHU is a promising salt free agent for uranium/plutonium separation.
- Subjects :
- medicine.diagnostic_test
Stripping (chemistry)
Health, Toxicology and Mutagenesis
Radiochemistry
Public Health, Environmental and Occupational Health
Aqueous two-phase system
chemistry.chemical_element
PUREX
Uranium
Pollution
Analytical Chemistry
Plutonium
chemistry.chemical_compound
Nuclear Energy and Engineering
chemistry
Nitric acid
Spectrophotometry
medicine
Radiology, Nuclear Medicine and imaging
Phosgene
Spectroscopy
Nuclear chemistry
Subjects
Details
- ISSN :
- 15882780 and 02365731
- Volume :
- 279
- Database :
- OpenAIRE
- Journal :
- Journal of Radioanalytical and Nuclear Chemistry
- Accession number :
- edsair.doi...........11073f9978448038131298a9cd081d64