RadChem 2010

Session

Chemistry of Nuclear Fuel Cycle, Radiochemical Problems in Nuclear Waste Management 5

NFC5

22 Apr 2010, 03:00

Casino Conference Centre

61. Joint determination of ⁹⁹Tc and ^108mAg in L/ILW liquid wastes

Mr Árpád Bihari (Nuclear Research Institute, Hungary)

22/04/2010, 03:00

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

Verbal

The low- and intermediate-level liquid wastes produced by the Paks Nuclear Power Plant (NPP) contain routinely measureable gamma-emitting (e.g. Mn-54, Co-60, Ag-110m, and Cs-137) as well as many so-called “difficult-to-measure” isotopes. Despite of their low specific activity compared to the total, the reliable determination of these isotopes is an important issue of nuclear waste management....

234. Extraction of thorium from the Fen deposit in Norway

Mr Dag Eriksen (Primus.inter.pares as)

22/04/2010, 03:15

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

Verbal

After the renaissance of nuclear power and thorium breeding in particular, the interest for the Norwegian thorium deposits has revived. However, the economic potential for exploitation is depending on several parameters, i.e. heterogeneity of ore, content of carbonaceous minerals, other valuable elements present, etc. Fen is the site where the largest Norwegian thorium deposits are found....

262. Technetium chemistry at the University of Nevada Las Vegas

Dr Frederic poineau (UNLV)

22/04/2010, 03:30

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

Verbal

The chemistry of technetium is being explored at the University of Nevada Las Vegas. Our goal is to investigate both the applied and fundamental aspects of technetium chemistry, with a special emphasis on synthesis, separations, and materials science. The synthetic chemistry focuses on metal-metal bonding and binary halides. Recently, two new multiply metal-metal bonded dimers and technetium...

299. Recent developments of nuclear forensic signatures of yellow cakes

Dr Zsolt Varga (EC JRC Institute for Transuranium Elements)

22/04/2010, 03:45

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

Verbal

Natural uranium is the starting material for the production of nuclear fuels. Uranium of natural isotopic composition is mined from uranium containing ores in different geological formations. The uranium is extracted, chemically purified and pre-concentrated. As an industrial scale material, uranium ore concentrates will carry signatures that provide information on the history and on the...

313. Heteronuclear hydrolysis complex of thorium(IV) and iron(III)

Mr Artsiom Radkevich (, Joint Institute for Power and Nuclear Research – Sosny, Belorussian Academy of Sciences, 220109 Мinsk, Belarus)

22/04/2010, 04:00

Separation Methods, Speciation

Verbal

The solubility of the Th(IV)/Fe(III) system has been studied as function of pH in the range 2.00-3.50. In the individual systems of thorium(IV) and iron(III) precipitation takes place due to formation of hydrolysis products. However, in the mixed Th(IV)/Fe(III) system precipitation of ferrihydrite takes place at low pH value, pH = 2.00, whereas at higher pH no precipitation was observed after...