| DOI: | 10.2172/1000817
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| 报告号: | PNNL-20044
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| 报告题名: | Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY 2010 |
| 作者: | Amonette, James E.; Jeffers, Peter M.; Qafoku, Odeta; Russell, Colleen K.; Humphrys, Daniel R.; Wietsma, Thomas W.; Truex, Michael J.
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| 出版年: | 2010
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| 发表日期: | 2010-12-08
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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: | carbon tetrachloride
; chloroform
; hydrolysis
; kinetics
; rates
; abiotic degradation
; Hanford
; sediment
; Henry's Law
; Environmental Molecular Sciences Laboratory
|
| 中文主题词: | 碳
; 剥蚀
; 矿物
|
| 主题词: | CARBON
; DEGRADATION
; MINERALS
|
| 英文摘要: | This report documents the progress made through FY 2010 on a project initiated in FY 2006 to help address uncertainties related to the rates of hydrolysis in groundwater at the Hanford Site for carbon tetrachloride (CT) and chloroform (CF). The study also explores the possible effects of contact with minerals and sediment (i.e., heterogeneous hydrolysis) on these rates. The research was initiated to decrease the uncertainties in abiotic degradation rates of CT and chloroform CF associated with temperature and possible heterogeneous effects. After 2 years of data collection, the first evidence for heterogeneous effects was identified for hydrolysis of CT, and preliminary evidence for the effects of different mineral types on CF hydrolysis rates also was reported. The CT data showed no difference among mineral types, whereas significant differences were seen in the CF results, perhaps due to the fact that CF hydrolyzes by both neutral and base-catalyzed mechanisms whereas CT follows only the neutral hydrolysis path. In this report, we review the project objectives, organization, and technical approaches taken, update the status and results of the hydrolysis-rate experiments after 4 years of experimentation (i.e., through FY 2010), and provide a brief discussion of how these results add to scientific understanding of the behavior of the CT/CF plume at the Hanford Site. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1000817
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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/39963
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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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| 1000817.pdf（682KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Amonette, James E.,Jeffers, Peter M.,Qafoku, Odeta,et al. Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY 2010. 2010-01-01.
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