Journal of Radioanalytical and Nuclear Chemistry

, Volume 241, Issue 3, pp 647–650 | Cite as

A study on the adsorption-exchange of UO22+,137Cs,169Yb and HPO42− on modified peat

  • Tingsheng Yue
  • Wenming Dong
  • Yukun Wang


The adsorption-exchange equilibrium time and the adsorption isotherms of UO22+,137Cs,169Yb and HPO42− on modified peat have been investigated by batch experiments. The effect of pH on the adsorption-exchange percentage (E) and the distribution coefficients (Kd) was also examined. It was found that the adsorption-exchange of UO22+ and169Yb on the modified peat was described well by Freundlich isotherm, whereas the adsorption-exchange of137Cs and HPO42− on modified peat corresponded to a Langmuir isotherm and the maximum adsorption capacities of the modified peat for137Cs and HPO42− ions were 4.4 and 4.1 μg/g respectively. The optimum pH for the adsorption-exchange of UO22+,137Cs,169Yb and HPO42− on the modified peat was 7.0 at 25°C.


Physical Chemistry Inorganic Chemistry Adsorption Capacity Adsorption Isotherm Distribution Coefficient 
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Copyright information

© Akadémiai Kiadó 1999

Authors and Affiliations

  • Tingsheng Yue
    • 1
  • Wenming Dong
    • 1
  • Yukun Wang
    • 2
  1. 1.Radiochemistry Laboratory, College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhouP. R. China
  2. 2.Department of Chemical EngineeringXian Petroleum InstituteXianP. R. China

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