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Magnetic resonance imaging of nonaqueous phase liquid during soil vapor extraction in
 

Summary: Magnetic resonance imaging of nonaqueous phase
liquid during soil vapor extraction in
heterogeneous porous media
Yanjie Chua
, Charles J. Wertha,*, Albert J. Valocchia
,
Hongkyu Yoona
, Andrew G. Webbb
a
Department of Civil and Environmental Engineering, Environmental Engineering and Science,
University of Illinois at Urbana-Champaign, 205 N. Mathews Avenue, Urbana IL 61801, USA
b
Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign,
Urbana, IL 61801, USA
Received 1 May 2003; received in revised form 17 November 2003; accepted 5 December 2003
Abstract
Soil vapor extraction (SVE) is commonly used to remediate nonaqueous phase liquids (NAPLs)
from the vadose zone. This paper aims to determine the effect of grain size heterogeneity on the
removal of NAPL in porous media during SVE. Magnetic resonance imaging (MRI) was used to
observe and quantify the amount and location of NAPL in flow-through columns filled with silica gel

  

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

 

Collections: Biology and Medicine