groundwaters hydrochemistry of ayrakan and cheshmeh shotori areas and geochemistry of rare earth elements, indicate ayrakan alkali granite as the origin of uranium and other dissolved elements in groundwaters of these areas. geochemical and hydrogeochemical studies as well as the trend of uranium and thorium transition and mobility in aqueous environments of these areas indicate uranium adsorpt...

The naval industry has integrated the generation of energy through nuclear processes, due to large amount that is produced in these for example, ship NS OTTO HAHN, which used a propulsion plant with generated by reactor pressurized water (PWR), operated under fission process. Also, other examples are military ships and icebreakers. In order know contribution this type plants, work carries out m...

the main goal of this study is to investigate the capability of zeolites a and p synthesized from iranian natural clinoptilolite for uranium uptak. the removal of uranium(vi) from aqueous solution via ion exchange by zeolites in a single component system with various contact times,  temperatures and initial concentrations of uranium(vi) was investigated. the experimental results were fitted to ...

The hydrometallurgical separation concepts for the recycling of irradiated nuclear fuels developed in Europe are presented and discussed. Whilst Part 1 review focused on heterogeneous minor actinides, this article focuses group transuranic which would support homogeneous scenarios. Most these were within European collaborative projects involve solvent extraction processes separating all actinid...

This paper presents the validation of the Monte Carlo code MCNP-PoliMi for the simulation of nuclear safeguards experiments with plutonium and uranium metal based on fast time-correlation measurements. A comparison is presented between experimental data acquired with the Nuclear Materials Identification System and the Monte Carlo simulations. The measurements and simulations were performed for ...

In the summer of 1939 Otto Frisch, who was in Copenhagen, received an invitation from Mark Oliphant, a professor of physics at Birmingham, to come to Birmingham for the summer to see if some arrangements might be made for Frisch to emigrate to Birmingham. War came that fall and Frisch could not return safely to Denmark. He was given a lectureship that enabled him to stay. The previous Christmas...

The current study was attributed to uranium (VI) ions adsorption using a anion exchanger resin, Dowex®2x8, in the presence of sulfate anions. Evaluation of operational parameters including contact time, pH, initial concentration of uranium ions, and presence of various anions (including phosphate, sulfate, chloride, fluoride, and nitrate) in the solution was assessed on sorption performance of ...

a solid chelating material, 1-(2-pyridy1azo)-2-naphthol (pan) supported on naphthalene provides a rapid and highly selective means of preconcentration of uranium from aqueous solution. uranium is quantitatively retained on this adsorbent in the ph range 9.8-10.7 with a flow rate of 1 ml min . the metal complex was desorbed with 10 ml of 2 m hydrochloric acid and uranium is determined by differe...