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Characterization of NAPL Source Zone Architecture and Dissolution

Summary: Characterization of NAPL Source
Zone Architecture and Dissolution
Kinetics in Heterogeneous Porous
Media Using Magnetic Resonance
C H A N G Y O N G Z H A N G , * ,
C H A R L E S J . W E R T H , A N D
A N D R E W G . W E B B
Department of Civil and Environmental Engineering,
University of Illinois at Urbana-Champaign, 205 North
Mathew Avenue, MC-250, Urbana, Illinois 61801, and
Department of Bioengineering, Pennsylvania State University,
313 Hallowell Building, University Park, Pennsylvania 16802
A direct visualization method using magnetic resonance
imaging (MRI) was developed to characterize sand grain size
distribution, nonaqueous phase liquid (NAPL) source
zone architecture, and aqueous flowpaths in a three-
dimensional (3-D) flowcell (26.5 cm 10.5 cm 10.5 cm)
packed with a heterogeneous distribution of five different
sand fractions. All images were acquired at a resolution of


Source: Andrews, Anne M. - Huck Institutes of the Life Sciences, Pennsylvania State University


Collections: Biology and Medicine