Adsorption of thorium (IV) and uranium (VI) onto Azraq humic acid, Jordan
Joint Authors
Source
Issue
Vol. 5, Issue 1 (30 Apr. 2012), pp.33-42, 10 p.
Publisher
Yarmouk University Deanship of Research and Graduate Studies
Publication Date
2012-04-30
Country of Publication
Jordan
No. of Pages
10
Main Subjects
Topics
Abstract EN
Hemic Acid (HA) is an important constituent of soil organic matter that was the subject of several environmental studies.
In this work, the adsorption isotherms of Thorium (IV) and Uranium (VI) onto Azraq Hemic acid (AZHA) were studied at different temperature and pH values.
The results indicate that Thorium (IV) has higher absorptivity than Uranium (VI).
The increasing of pH resulted in higher absorptivity of Thorium (IV) and Uranium (VI).
In contrast to transition metals and lanthanides, such as Ni (II), Cu (II), Zn (II), Cd (II), Hg (II), Gd (III), Ce (III) and Yb (III), the adsorption was entropy driven, while 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, transition metals and lanthanides are adsorbed on the exterior of HA helix.
American Psychological Association (APA)
Muhammad, A. K.& Khalili, F. I.. 2012. Adsorption of thorium (IV) and uranium (VI) onto Azraq humic acid, Jordan. Jordan Journal of Physics،Vol. 5, no. 1, pp.33-42.
https://search.emarefa.net/detail/BIM-305025
Modern Language Association (MLA)
Muhammad, A. K.& Khalili, F. I.. Adsorption of thorium (IV) and uranium (VI) onto Azraq humic acid, Jordan. Jordan Journal of Physics Vol. 5, no. 1 (2012), pp.33-42.
https://search.emarefa.net/detail/BIM-305025
American Medical Association (AMA)
Muhammad, A. K.& Khalili, F. I.. Adsorption of thorium (IV) and uranium (VI) onto Azraq humic acid, Jordan. Jordan Journal of Physics. 2012. Vol. 5, no. 1, pp.33-42.
https://search.emarefa.net/detail/BIM-305025
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 42
Record ID
BIM-305025