| Viability of longitudinal trenches for capturing contaminated groundwater. | |
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MedLine Citation:
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PMID: 20237910 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Using a groundwater flow and mass transport model, this study compared the capability of trenches with permeable backfill for capturing hypothetical contaminant plumes in homogeneous and heterogeneous unconfined aquifers. Longitudinal (parallel to groundwater flow), as well as conventional transverse (perpendicular to groundwater flow) trench configurations were considered. Alternate trench configurations intercepted the leading tip of an initial contaminant plume and had identical length, equal to the cross-gradient width of the plume. A longitudinal trench required 31% less time than its transverse counterpart to remediate a homogeneous aquifer. By contrast, in simulated heterogeneous aquifers, longitudinal remediation timeframes ranged from 41% less to 33% more than transverse trenches. Results suggest that longitudinal trenches may be a viable alternative for narrow contaminant plumes under low-groundwater velocity conditions, but may be impractical for plumes with wide leading tips, or in complex heterogeneous aquifers with divergent flow. |
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Authors:
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Paul F Hudak |
Publication Detail:
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Type: Journal Article Date: 2010-03-17 |
Journal Detail:
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Title: Bulletin of environmental contamination and toxicology Volume: 84 ISSN: 1432-0800 ISO Abbreviation: Bull Environ Contam Toxicol Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-04-16 Completed Date: 2010-07-16 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0046021 Medline TA: Bull Environ Contam Toxicol Country: United States |
Other Details:
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Languages: eng Pagination: 418-21 Citation Subset: IM |
Affiliation:
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Department of Geography and Environmental Science Program, University of North Texas, 1155 Union Circle #305279, Denton, TX 76203-5017, USA hudak@unt.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Computer Simulation Environmental Remediation* Models, Chemical Water Movements* Water Pollution, Chemical* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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