| DOI: | 10.2172/1204363
|
| 报告号: | SRNL-STI--2015-00358
|
| 报告题名: | Total Reducing Capacity in Aquifer Minerals and Sediments: Quantifying the Potential to Attenuate Cr(VI) in Groundwater |
| 作者: | Sisman, S. Lara
|
| 出版年: | 2015
|
| 发表日期: | 2015-07-20
|
| 总页数: | 14
|
| 国家: | 美国
|
| 语种: | 英语
|
| 中文主题词: | 沉积物
; 铁
; 矿物
|
| 主题词: | SEDIMENTS
; IRON
; MINERALS
|
| 英文摘要: | Hexavalent chromium, Cr(VI), is present in the environment as a byproduct of industrial processes. Due to its mobility and toxicity, it is crucial to attenuate or remove Cr(VI) from the environment. The objective of this investigation was to quantify potential natural attenuation, or reduction capacity, of reactive minerals and aquifer sediments. Samples of reduced-iron containing minerals such as ilmenite, as well as Puye Formation sediments representing a contaminated aquifer in New Mexico, were reacted with chromate. The change in Cr(VI) during the reaction was used to calculate reduction capacity. This study found that minerals that contain reduced iron, such as ilmenite, have high reducing capacities. The data indicated that sample history may impact reduction capacity tests due to surface passivation. Further, this investigation identified areas for future research including: a) refining the relationships between iron content, magnetic susceptibility and reduction capacity, and b) long term kinetic testing using fresh aquifer sediments. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1204363
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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/41816
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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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| 1204363.pdf（428KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Sisman, S. Lara. Total Reducing Capacity in Aquifer Minerals and Sediments: Quantifying the Potential to Attenuate Cr(VI) in Groundwater. 2015-01-01.
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