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DOI10.1016/j.scitotenv.2013.08.056
Fifteen-year assessment of a permeable reactive barrier for treatment of chromate and trichloroethylene in groundwater
Wilkin, Richard T.1; Acree, Steven D.1; Ross, Randall R.1; Puls, Robert W.2; Lee, Tony R.1; Woods, Leilani L.3
发表日期2014-01-15
ISSN0048-9697
卷号468页码:186-194
英文摘要

The fifteen-year performance of a granular iron, permeable reactive barrier (PRB; Elizabeth City, North Carolina) is reviewed with respect to contaminant treatment (hexavalent chromium and trichloroethylene) and hydraulic performance. Due to in-situ treatment of the chromium source zone, reactive and hydraulic longevity of the PRB has outlived the mobile chromate plume. Chromium concentrations exceeding 3 mu g/L have not been detected in regions located hydraulically down-gradient of the PRB. Trichloroethylene treatment has also been effective, although non-constant influent concentrations of trichloroethylene have at times resulted in incomplete dechlorination. Daughter products: cis-1,2-dichloroethylene, vinyl chloride, ethene, and ethane have been observed within and down-gradient of the PRB at levels <10% of the influent trichloroethylene. Analysis of potentiometric surfaces up-gradient and across the PRB suggests that the PRB may currently represent a zone of reduced hydraulic conductivity; however, measurements of the in-situ hydraulic conductivity provide values in excess of 200 m/d in some intervals and indicate no discernible loss of bulk hydraulic conductivity within the PRB. The results presented here are particularly significant because they provide the longest available record of performance of a PRB. The longevity of the Elizabeth City PRB is principally the result of favorable groundwater geochemistry and hydrologic properties of the site. Published by Elsevier B.V.


英文关键词Permeable reactive barrier;Granular iron;Long-term performance;Chromium;Trichloroethylene;Groundwater remediation
语种英语
WOS记录号WOS:000331776000022
来源期刊SCIENCE OF THE TOTAL ENVIRONMENT
来源机构美国环保署
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/59413
作者单位1.US EPA, Natl Risk Management Res Lab, Ground Water & Ecosyst Restorat Div, Ada, OK 74820 USA;
2.Univ Oklahoma, Oklahoma Water Survey, Norman, OK 73019 USA;
3.US Coast Guard Base Elizabeth City, Elizabeth City, NC 27909 USA
推荐引用方式
GB/T 7714
Wilkin, Richard T.,Acree, Steven D.,Ross, Randall R.,et al. Fifteen-year assessment of a permeable reactive barrier for treatment of chromate and trichloroethylene in groundwater[J]. 美国环保署,2014,468:186-194.
APA Wilkin, Richard T.,Acree, Steven D.,Ross, Randall R.,Puls, Robert W.,Lee, Tony R.,&Woods, Leilani L..(2014).Fifteen-year assessment of a permeable reactive barrier for treatment of chromate and trichloroethylene in groundwater.SCIENCE OF THE TOTAL ENVIRONMENT,468,186-194.
MLA Wilkin, Richard T.,et al."Fifteen-year assessment of a permeable reactive barrier for treatment of chromate and trichloroethylene in groundwater".SCIENCE OF THE TOTAL ENVIRONMENT 468(2014):186-194.
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