Adsorption of trivalent lanthanides by marine sediments

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• 作者：Ioanna Liatsou ; Maria Efstathiou…
• 关键词：Trivalent europium ; Marine sediments ; Adsorption ; Humic acid
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：304
• 期：1
• 页码：41-45
• 全文大小：541 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Nuclear Chemistry
  Physical Chemistry
  Nuclear Physics, Heavy Ions and Hadrons
  Diagnostic Radiology
  Inorganic Chemistry
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1588-2780

文摘

The interaction of Eu(III) with two different types of marine sediments has been investigated as a function of various parameters (e.g. pH, [Eu(III)]o, I, humic acid) to evaluate their effect on the Eu(III) adsorption. The adsorption properties (e.g. adsorption capacity) of the different sediment types, as well as the effect of the physicochemical parameters differ significantly from one type to another, depending on the (surface) composition. Generally, the adsorption data are well described by the Langmuir isotherm and the formation of outer-sphere complexes is favoured at low pH, whereas the formation of inner-sphere complexes becomes predominant at pH?>?4.