تقرير
Bioremediation in Fractured Rock: 2. Mobilization of Chloroethene Compounds from the Rock Matrix.
| العنوان: | Bioremediation in Fractured Rock: 2. Mobilization of Chloroethene Compounds from the Rock Matrix. |
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| المؤلفون: | Shapiro AM, Tiedeman CR; U.S. Geological Survey, Menlo Park, CA 94025., Imbrigiotta TE; U.S. Geological Survey, Lawrenceville, NJ 08648., Goode DJ; U.S. Geological Survey, Lawrenceville, NJ 08648., Hsieh PA; U.S. Geological Survey, Menlo Park, CA 94025., Lacombe PJ; U.S. Geological Survey, Lawrenceville, NJ 08648., DeFlaun MF; Geosyntec Consultants, Princeton, NJ 08628., Drew SR; Geosyntec Consultants, Princeton, NJ 08628., Curtis GP; U.S. Geological Survey, Menlo Park, CA 94025. |
| المصدر: | Ground water [Ground Water] 2018 Mar; Vol. 56 (2), pp. 317-336. Date of Electronic Publication: 2017 Sep 05. |
| نوع المنشور: | Case Reports; Research Support, U.S. Gov't, Non-P.H.S. |
| اللغة: | English |
| بيانات الدورية: | Publisher: Blackwell Publishing Country of Publication: United States NLM ID: 9882886 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1745-6584 (Electronic) Linking ISSN: 0017467X NLM ISO Abbreviation: Ground Water Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2005- : Malden, MA : Blackwell Publishing Original Publication: Worthington, Ohio : Water Well Journal Pub. Co., |
| مواضيع طبية MeSH: | Biodegradation, Environmental* , Groundwater* , Water Pollutants, Chemical*, Diffusion |
| مستخلص: | A mass balance is formulated to evaluate the mobilization of chlorinated ethene compounds (CE) from the rock matrix of a fractured mudstone aquifer under pre- and postbioremediation conditions. The analysis relies on a sparse number of monitoring locations and is constrained by a detailed description of the groundwater flow regime. Groundwater flow modeling developed under the site characterization identified groundwater fluxes to formulate the CE mass balance in the rock volume exposed to the injected remediation amendments. Differences in the CE fluxes into and out of the rock volume identify the total CE mobilized from diffusion, desorption, and nonaqueous phase liquid dissolution under pre- and postinjection conditions. The initial CE mass in the rock matrix prior to remediation is estimated using analyses of CE in rock core. The CE mass mobilized per year under preinjection conditions is small relative to the total CE mass in the rock, indicating that current pump-and-treat and natural attenuation conditions are likely to require hundreds of years to achieve groundwater concentrations that meet regulatory guidelines. The postinjection CE mobilization rate increased by approximately an order of magnitude over the 5 years of monitoring after the amendment injection. This rate is likely to decrease and additional remediation applications over several decades would still be needed to reduce CE mass in the rock matrix to levels where groundwater concentrations in fractures achieve regulatory standards. (© 2017, National Ground Water Association.) |
| المشرفين على المادة: | 0 (Water Pollutants, Chemical) |
| تواريخ الأحداث: | Date Created: 20170906 Date Completed: 20180813 Latest Revision: 20181202 |
| رمز التحديث: | 20231215 |
| DOI: | 10.1111/gwat.12586 |
| PMID: | 28873499 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1745-6584 |
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| DOI: | 10.1111/gwat.12586 |