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Simulation of a 2-site Langmuir model for characterizing the sorption capacity of Cs and Se in crushed mudrock under various ionic strength effects

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Abstract

The sorption capacity of cesium (Cs) and selenium (Se) in crushed mudrock was demonstrated in this study through a 2-site Langmuir model. To employ such a numerical analysis, batch tests were applied in this study in synthetic seawater and groundwater with sorption/desorption kinetic experiments (time-dependent) and different concentrations (10−2–10−7 M). The 2-site sorption models, which correspond to two rate constants (λ 1 and λ 2), might be more adequate than 1-site sorption models in characterizing Cs and Se sorption/desorption according to the least square errors between the numerical analysis and the results of the batch tests. The fitting results showed that a 2-site Langmuir model is capable of appropriately describing Cs and Se sorption in mudrock. Consequently, the sorption capacity was calculated at about 0.06 mol/kg for Cs and at 0.015 mol/kg for Se.

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Acknowledgments

The experimental part of this study was supported by National Science Council (NSC, Taiwan) through the project of 101-2914-I-006-009-A1 and Institute of Nuclear Energy Research (INER, Taiwan) through the mutual project of Graduate student program 2012. It is much appreciated that this study is funded by National Cheng-Kung University, Taiwan, R.O.C under the project Headquarters of University Advancement.

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Authors and Affiliations

  1. Department of Earth Sciences, National Cheng Kung University, Tainan, 70101, Taiwan

    Chuan-Pin Lee, Ming-Chee Wu & Chun-Hua Pan

  2. Department of Chemical and Materials Engineering, National Central University, Taoyuan, 32001, Taiwan

    Ching-Yuan Liu

  3. Chemistry Divisions, Institute of Nuclear Energy Research, Longtan, 32546, Taiwan

    Tsuey-Lin Tsai, Hwa-Jou Wei & Lee-Chung Men

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  1. Chuan-Pin Lee
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  2. Ching-Yuan Liu
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  3. Ming-Chee Wu
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  4. Chun-Hua Pan
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  5. Tsuey-Lin Tsai
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  6. Hwa-Jou Wei
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  7. Lee-Chung Men
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Correspondence to Ming-Chee Wu.

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Lee, CP., Liu, CY., Wu, MC. et al. Simulation of a 2-site Langmuir model for characterizing the sorption capacity of Cs and Se in crushed mudrock under various ionic strength effects. J Radioanal Nucl Chem 296, 1119–1125 (2013). https://doi.org/10.1007/s10967-012-2184-1

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  • DOI: https://doi.org/10.1007/s10967-012-2184-1

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