Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY 2010

doi:10.2172/1000817

GSTDTAP > 地球科学

DOI	10.2172/1000817
报告编号	PNNL-20044
来源ID	OSTI ID: 1000817
	Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY 2010
	Amonette, James E.; Jeffers, Peter M.; Qafoku, Odeta; Russell, Colleen K.; Humphrys, Daniel R.; Wietsma, Thomas W.; Truex, Michael J.
	2010-12-08
出版年	2010
语种	英语
国家	美国
领域	地球科学
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.
英文关键词	carbon tetrachloride chloroform hydrolysis kinetics rates abiotic degradation Hanford sediment Henry's Law Environmental Molecular Sciences Laboratory
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/4714
专题	地球科学
推荐引用方式 GB/T 7714	Amonette, James E.,Jeffers, Peter M.,Qafoku, Odeta,et al. Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY 2010,2010.