RESUMO
Simulated waste solutions containing 134Cs were incorporated into cement matrices at varying compositions and in the presence and absence of various additive materials. Montmorillonite and kaolinite clay minerals, in addition to sand, were added for improving the properties of the cement composites. The leachability of 134Cs was measured for different cement-clay mixtures. The effect of the presence of ions, such as borates, sulphate, and nitrates commonly found in waste raffinates, was also investigated. The results for compressive strength and leachability were explained in light of the effect of the presence of clay additives on cement matrices.
Assuntos
Silicatos de Alumínio , Radioisótopos de Césio , Materiais de Construção , Resíduos Radioativos , Eliminação de Resíduos/métodos , ArgilaRESUMO
Adogen-364 has been used for the extraction ofgallium(III) and indium(III) from halogen acid solutions, and the dependence of the extraction on chloride, bromide and iodide ion concentration studied. The separation of Ga(III), In(III) and Al(III) is reported and some conclusions have been drawn about the stoichiometry of the extracted species.
