Journal of Radioanalytical and Nuclear Chemistry

, Volume 289, Issue 2, pp 337–343 | Cite as

Transport and retention of strontium in surface-modified quartz sand with different wettability



Instead of radioactive 90Sr, common strontium chloride was used to simulate the migration of radioactive strontium chloride in surface hydroxylated, silanized, and common quartz sand. The sorption and retardation characteristics of strontium (Sr2+) in these surface modified quartz sands were studied by batch tests and column experiments. The equilibrium sorption data for Sr2+ on different wettability sands were described by the Langmuir and Freundlich isotherm models, and the Langmuir model has been found to provide better correlation for hydrophilic sand. The breakthrough curves (BTCs) of Sr2+ in these media were analyzed with the equilibrium convection–dispersion equation (CDE) and a non-equilibrium two-region mobile–immobile model (TRM) using a nonlinear least square curve-fitting program CXTFIT. The TRM model showed better fit to the measured BTCs of Sr2+, and the parameters of the fraction of mobile water indicated that significant preferential flow effected the non-equilibrium transport of Sr2+. Although TRM model could not fit the Sr2+ BTCs very well, the parameter estimated by TRM model may be more reliable than those obtained from batch experiments because the transport of Sr2+ in these kind of sand is non-equilibrium processes.


Strontium Radionuclide migration Retardation factor Wettability Breakthrough curves 



This work was partially supported by the Natural Science Foundation of China (No. 40872199), the Natural Science Foundation of Shanxi Province (No. 2010021012_0).


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  1. 1.Institute of Environmental ScienceTaiyuan University of Science and TechnologyTaiyuanPeople’s Republic of China

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