DNAPL

A dense nonaqueous phase liquid (DNAPL) is a liquid that is denser than water and does not dissolve or mix easily in water (it is immiscible). In the presence of water it forms a separate phase from the water. Many chlorinated solvents, such as trichloroethylene, are DNAPLs.

DNAPL Headlines

• DNAPL Removal Key to Accelerated, Less Expensive Remediation
• What Controls the Migration of Chlorinated Solvents in Fractured Rock?

More Information on the Fate of DNAPLs

• Geochemical and Microbiological Processes that Affect Migration and Natural Attenuation of Chlorinated Solvents in Fractured Sedimentary Rock -- Naval Air Warfare Center (NAWC) Research Site, West Trenton, NJ
• Multiphase Flow, Transport, Reaction and Biodegradation

Additional USGS Information on DNAPLs

• Preliminary Conceptual Models of the Occurrence, Fate, and Transport of Chlorinated Solvents in Karst Regions of Tennessee, U.S. Geological Survey Water-Resources Investigations Report 97-4097
• Defining Reaction Mechanisms in Clay/Organic Mixtures

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