Characterization of Changes in Colloid and DNAPL Affecting Surface Chemistry and Remediation

TL;DRAbstract

Field work was completed in March 2004 to collect soil borings from 4 background locations. Samples are presently being analyzed for VOC concentrations, grain size mineralology and microbial populations. Results are not yet available from these activities. Analysis is on-going to characterize a DNAPL sample collected from the M-area settling basin. Previous results suggested that the interfacial tension of this sample was very low and the acidity high. Recent observations and analysis have lead to a revised hypothesis regarding the role of inorganic constituents that partition into the DNAPL as it was disposed with many other waste products. A white precipitate can form when the volume of DNAPL is high relative to the volume of water. This precipitate accumulates at the DNAPL-water interface causing the low interfacial tension. As far as I know, this is the first research available that identifies the important role of inorganic constituents in a DNAPLon interfaial behavior of DNAPLs i

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