Journal of Radioanalytical and Nuclear Chemistry

, Volume 262, Issue 3, pp 579–586 | Cite as

Resorcinol - formaldehyde adsorption of cesium from Hanford waste solutions, Part I. Batch equilibrium study

  • N. M. Hassan
  • K. Adu-Wusu
  • J. C. Marra


Batch equilibrium measurements were conducted at 25±2 °C with a granular resorcinol-formaldehyde (RF) resin to determine the distribution coefficients (Kdfor cesium. In the tests, Hanford Site actual waste sample containing radioactive cesium (137Cs) and a pretreated waste sample that was spiked with non-radioactive 133Cs were used. Initial concentrations of non-radioactive cesium in the waste sample were varied to generate an equilibrium isotherm for cesium. Majority of the tests were conducted at 25±2 °C using a liquid to solid phase ratio of ∽100 ml/g and at a contact time of 72 hours. Two additional tests were conducted at a liquid to solid phase ratio of 10 and at contact time of 120 hours. The measured distribution coefficient (Kd) for radioactive cesium (137Cs) was 948 ml/g, the Kd for non-radioactive cesium (133Cs) was 1039 ml/g. The Kd for nonradioactive cesium decreased from 1039 to 691 ml/g with increased initial cesium concentration from ∽8 to 64 μg/ml. Very little change of the Kd was observed at initial cesium concentration above 64 ∽g/ml. The maximum sorption capacity for cesium on granular RF resin was 1.17 mmole/g dry resin. This value was calculated from the fit of the equilibrium isotherm data to the Dubinin-Radushkevich equation. Previously, a total capacity of 2.84 mmole/g was calculated by Bibler and Wallace for air-dried RF resin.


Cesium Waste Sample Formaldehyde Adsorption Waste Solution Radioactive Cesium 
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Copyright information

© Kluwer Academic Publisher/Akadémiai Kiadó 2004

Authors and Affiliations

  • N. M. Hassan
    • 1
  • K. Adu-Wusu
    • 1
  • J. C. Marra
    • 1
  1. 1.Westinghouse Savannah River Company AikenSavannah River Technology CenterSouth CarolinaUSA E-mail

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