Книга: Fawwaz Khalili and Ahmad K. Mohammad «ADSORPTION OF ACTINIDES»
|
Производитель: "LAP Lambert Academic Publishing" Shorttitle Humic Acid (HA) is an important constituent of soil organic matter which was the subject of several environmental studies. In this work the adsorption isotherms of Thorium(IV) and Uranium(VI) onto Azraq Humic acid (AZHA) were studied at different temperature and pH values. The results indicate that Thorium(IV) has higher adsorptivity than Uranium(VI). The increasing of pH resulted in higher adsorptivity of Actinides. In contrast to heavy metals and Lanthanides (entropy driven), the adsorption of Actinides on HA was found to be exothermic and so enthalpy driven. This leads to the hypothesis that Thorium(IV) and Uranium(IV) are encapsulated in the interior of HA helix with their water of hydration because the interior is full with water. However, heavy metals and Lanthanides are adsorbed on the exterior of HA helix. ISBN:9783844310580 Издательство: "LAP Lambert Academic Publishing" (2011)
ISBN: 9783844310580 |
См. также в других словарях:
Actinide — The atomic bomb dropped on Nagasaki had a plutonium charge.[1] The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium thro … Wikipedia
Copernicium — roentgenium ← copernicium → ununtrium Hg ↑ Cn … Wikipedia
Mendelevium — fermium ← mendelevium → nobelium Tm ↑ Md ↓ (Upu) … Wikipedia
Nuclear fission product — Nuclear fission products are the atomic fragments left after a large atomic nucleus fissions. Typically, a large nucleus like that of uranium fissions by splitting into two smaller nuclei, along with a few neutrons and a large release of energy… … Wikipedia
Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare … Wikipedia
Uranium — Protactinium ← Uranium → Neptunium Nd … Wikipédia en Français
