Incorporation of iodine into uranophane formed during the corrosion of spent nuclear fuel
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Shijun Wu
Abstract
In order to evaluate the potential incorporation of 129I into uranyl phases that would form during oxidative alteration of spent nuclear fuel, uranophane was synthesized under mild hydothermal conditions of 165°C in the presence of iodide, iodate and periodate, respectively. The precipitates were examined and analyzed using powder X-ray diffraction (XRD), infrared spectroscopy (IR) and scanning electron microscope (SEM) equipped with an energy-dispersive X-ray spectroscopy (EDS). The results indicate that significant amount iodine can be incorporated into the structure of uranophane in the form of IO4-, and less in the form of IO3-. Crystallo-chemical analyses suggest that the incorporation mechanisms would be the substitution of iodate and periodate for SiO4 tetrahedron in the sheet.
© by Oldenbourg Wissenschaftsverlag, München, Germany
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Articles in the same Issue
- TRLFS study on the complexation of Cm(III) with nitrate in the temperature range from 5 to 200 °C
- Rapid method for the determination of actinides in soil and sediment samples by alpha spectrometry
- Gas chemical investigation of hafnium and zirconium complexes with hexafluoroacetylacetone using preseparated short-lived radioisotopes
- A robust biamperometric titration methodology for the determination of uranium by Ti(III) reduction in the presence of plutonium
- Preparation and characterization of Zr-IV-containing Mg-Al-Cl layered double hydroxide
- Radiation and chemical stability of calix[4]arene derivatives as prospective liquid-liquid extractants
- A comparative study of neodymium sorption by yeast cells
- A novel technique for modifier free delivery of ligands for supercritical fluid extraction
- Measurement of I-129 in environmental samples by ICP-CRI-QMS: possibilities and limitations
- Incorporation of iodine into uranophane formed during the corrosion of spent nuclear fuel
