Rückhaltung von U(VI) und Eu(III) an Ca-Bentonit und CSH-Phasen unter hoch salinaren und alkalischen Bedingungen


Rückhaltung von U(VI) und Eu(III) an Ca-Bentonit und CSH-Phasen unter hoch salinaren und alkalischen Bedingungen

Wolter, J.-M.; Philipp, T.; Lippold, H.; Schmeide, K.; Stumpf, T.

Leaching experiments of uranium(VI) doped calcium-silicate-hydrate (CSH) phases with various calcium to silicon ratios were carried out in NaCl, NaCl/Na2SO4, NaCl/NaHCO3 and NaHCO3 containing solutions to study the time-dependent release of Ca, Si and U. Potential changes of the U(VI)-CSH binding induced by leaching were monitored with time-resolved laser-induced fluorescence spectroscopy (TRLFS), infrared spectroscopy (IR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and powder X-ray diffraction (PXRD).

  • Lecture (others)
    4. Workshop des BMWi-Verbundvorhabens “Geochemische Radionuklidrückhaltung an Zementalterationsphasen (GRaZ)“, 05.-06.04.2017, Mainz, Deutschland

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Publ.-Id: 25399