Conditioning Technology for Radioactive Waste Resulted From the Treatment of Liquid Waste From the Romanian Nuclear Power Plant

For the conditioning of spent resins contaminated with radionuclides, such as: 137Cs, 134Cs, 60Co, 58Co, 57Co, 54Mn, etc., techniques of direct immobilization in cement, bitumen and organic polymers have been tested. The selected process was the bituminization using industrial bitumen, I 60-70, made in Romania, which had very good characteristics. The paper presents stages of the research project, technical conditions for the process and advantages of the bituminization of spent resins

Caractérisation de complexes de Vanadium (III) présentant une géométrie de bipyramide-trigonale

The present study describes the synthesis of the solid complex compounds VCl3L2 with differents ligands and their characterisation by IR and electronic spectroscopie, elementary chemical analysis and differential thermic annalysis. An advanced study about the chemical nature bonds on the complex compounds has been realised by usig of the field ligands cellular model (CLF). The presence of free three-orbital d for Vanadium ion V3+ (d2) lead to the tansition of an electron pair sp2 hibrid atoms. In this case, a covalent-coordinating bond: V3+←•• E (E = N, P, As) can be resulting. The experimenal results show that all the complex compounds obtained present a D3h, geometry