Effect of pH, ionic strength, humic substances and temperature on the sorption of Th(IV) onto NKF-6 zeolite

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• 作者：Jian Wang ; Zhongshan Chen ; Wanying Chen…
• 关键词：Th(IV) ; NKF ; 6 zeolite ; Sorption ; Foreign ions ; Thermodynamic parameters
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：310
• 期：2
• 页码：597-609
• 全文大小：1,088 KB
• 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
• 卷排序：310

文摘

Sorption of Th(IV) from aqueous solution to NKF-6 zeolite as a function of experimental conditions were investigated using batch experiments. The sorption of Th(IV) on NKF-6 zeolite was strongly dependent on pH and ionic strength at pH < 6.0, and independent of ionic strength at pH > 6.0. The sorption of Th(IV) on NKF-6 zeolite was mainly dominated by ion exchange or outer-sphere surface complexation at low pH, while by inner-sphere surface complexation at high pH values. The thermodynamic data suggested that the sorption of Th(IV) on NKF-6 zeolite was an spontaneous and endothermic process. The results show that NKF-6 zeolite is a suitable adsorbent for Th(IV) enrichment from large amount of actual effluent.