| DOI: | 10.2172/1225270
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| 报告号: | LA-UR--15-28482
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| 报告题名: | Colloid-Facilitated Transport of <sup>137</sup>Cs in Fracture-Fill Material. Experiments and Modeling |
| 作者: | Dittrich, Timothy M.; Reimus, Paul William
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| 出版年: | 2015
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| 发表日期: | 2015-10-29
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| 总页数: | 29
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | Earth Sciences
; cesium
; fracture fill material
; granite
; bentonite
|
| 英文摘要: | In this study, we demonstrate how a combination of batch sorption/desorption experiments and column transport experiments were used to effectively parameterize a model describing the colloid-facilitated transport of Cs in the Grimsel granodiorite/FFM system. Cs partition coefficient estimates onto both the colloids and the stationary media obtained from the batch experiments were used as initial estimates of partition coefficients in the column experiments, and then the column experiment results were used to obtain refined estimates of the number of different sorption sites and the adsorption and desorption rate constants of the sites. The desorption portion of the column breakthrough curves highlighted the importance of accounting for adsorption-desorption hysteresis (or a very nonlinear adsorption isotherm) of the Cs on the FFM in the model, and this portion of the breakthrough curves also dictated that there be at least two different types of sorption sites on the FFM. In the end, the two-site model parameters estimated from the column experiments provided excellent matches to the batch adsorption/desorption data, which provided a measure of assurance in the validity of the model. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1225270
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/41724
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1225270.pdf（1179KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Dittrich, Timothy M.,Reimus, Paul William. Colloid-Facilitated Transport of <sup>137</sup>Cs in Fracture-Fill Material. Experiments and Modeling. 2015-01-01.
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