RadChem 2010

Session

Chemistry of Nuclear Fuel Cycle, Radiochemical Problems in Nuclear Waste Management 3

NFC3

20 Apr 2010, 10:00

Casino Conference Centre

221. Speciation and surface complexation modelling of Np(V) sorption on montmorillonite

Prof. Tobias Reich (Johannes Gutenberg-Universität Mainz, Institute of Nuclear Chemistry)

20/04/2010, 10:00

Chemistry of Nuclear Fuel Cycle, Radiochemical Problems in Nuclear Waste Management

Verbal

The sorption of Np(V) on Na-montmorillonite (STx-1) has been studied by batch experiments, spectroscopic measurements, and surface complexation modelling with the aim to contribute toward a better understanding of the sorption of 237Np (t1/2 = 2.1 × 106 a) in the near field (bentonite backfill material) and far field (argillaceous rocks) of high-level nuclear waste repositories. Batch...

100. The adsorptive behaviour of cadmium on clays

Dr Sneh Jain (Loughborough University)

20/04/2010, 10:30

Chemistry of Nuclear Fuel Cycle, Radiochemical Problems in Nuclear Waste Management

Verbal

Heavy metals present in the environment such as cadmium are considered harmful due to their toxicity. Adsorption-desorption reactions of metals from aqueous solutions to the soil play an important role in influencing the accumulation and transport of metal contaminants. These are affected by the surface and chemical properties of the soil components. Sorption and desorption of Cd2+ has...

41. An approach for acquiring data for description of diffusion in performance assessment of radioactive waste repositories

Dr Antonín Vokál (Nuclear Research Institute Řez plc)

20/04/2010, 10:50

Chemistry of Nuclear Fuel Cycle, Radiochemical Problems in Nuclear Waste Management

Verbal

Repositories for radioactive wastes are sited in the environment with very low permeability. One of the most important processes leading to the release of radionuclides to the environment is diffusion and therefore data for its evaluation are very important for the results of performance assessment of these repositories. These data are obtained usually from the evaluation of laboratory...