DNAPL Surface Chemistry: Its Impact on DNAPL Distribution in the Vadose Zone and its Manipulation to Enhance Remediation

Technical Report · Mon Jun 16 04:00:00 EDT 2003

DOI:https://doi.org/10.2172/812008· OSTI ID:812008

Power, Suan ^[1]; Grimberg, Stefan; Denham, Miles

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1. Clarkson University

The remediation of DNAPLs in subsurface environments is often limited by the heterogeneous distribution of the organic fluid. The fraction of DNAPL that is in the high conductivity regions of the subsurface can often be recovered relatively easily, although DNAPL in lower conductivity regions is much more difficult to extract, either through direct pumping or remediation measures based on interface mass transfer. The distribution of DNAPL within the vadose zone is affected by a complex interplay of heterogeneities in the porous matrix and the interfacial properties defining the interactions among all fluid and solid phases. Decreasing the interfacial tension between a DNAPL and water in the vadose zone could change the spreading of the DNAPL, thereby increase the surface area for mass transfer and the effectiveness of soil vapor extraction remediation.

• Research Organization: Clarkson University (US)
• Sponsoring Organization: (US)
• DOE Contract Number: FG07-99ER15006
• OSTI ID: 812008
• Report Number(s): DOE/ER/15006; EMSP 70035
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CHEMISTRY
DISTRIBUTION
MASS TRANSFER
PUMPING
SOILS
SURFACE AREA
WATER