科研之友
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摘要
The sorption of radionuclide 90-Sr(II) from aqueous solution onto kaolinite was studied by batch experiments under various experimental conditions. Kaolinite was characterized by XRD and FT-IR. The kinetic sorption process was well described by pseudo-second-order model. The sorption isotherms indicate that the sorption of 90-Sr(II) on kaolinite was better fitted by Langmuir than Freundlich and D-R models. The thermodynamic parameters (i.e., Delta H (0), Delta S (0) and Delta G (0)) suggest that the sorption was a spontaneous and endothermic process. The sorption of 90-Sr(II) on kaolinite was mainly dominated by ion exchange and outer-sphere surface complexation.
- 出版日期2015-1
- 单位合肥工业大学
