November 10, 2003 -- Dr. David Steffy, from the Department of Physical and Earth Sciences at
Jacksonville State University, recently presented his research on
Hydrogeology III: Mass Transport and Hydrogeochemistry at the 115th
annual meeting of the Geological Society of America held at the Washington
State Convention and Trade Center in Seattle.
Dr. Steffy found that because of its low concentration of critical
micelle, quick mobilization of low-density, non-aqueous phase liquids (LNAPL)
by tension reduction, large LNAPL recovery rates and low oxygen demand,
humic acid is a promising surfactant that enhances the mobilization of
LNAPL. However, in his research Dr. Steffy also found that humic acid
readily disperses pore-clogging clay and eventually degrades over
time.
Dr. Steffy's findings were discussed among 7,200 geoscientists making
this the largest annual meeting in GSA history.
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