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Description
Title: | Impacts of Source Zone Architecture on Nonaqueous Phase Liquid Dissolution and Cleanup: A Magnetic Resonance Imaging Study |
Author(s): | Zhang, Changyong |
Doctoral Committee Chair(s): | Werth, Charles J. |
Department / Program: | Civil and Environmental Engineering |
Discipline: | Civil and Environmental Engineering |
Degree Granting Institution: | University of Illinois at Urbana-Champaign |
Degree: | Ph.D. |
Genre: | Dissertation |
Subject(s): | Engineering, Civil |
Abstract: | Alternate flushing with water and two surfactant pulses (5∼6 pore volumes) resulted in 63% of NAPL mass removal from both aquifers. However, NAPL mass flux reduction was lower from aquifer 2 (68%) with a shorter correlation length than from aquifer 1 (82%). Local effluent concentrations from aquifer 2 increased by as high as 34 times after surfactant flushing. 3D MR images of NAPL revealed that NAPL migrated downward and created additional pools in previously uncontaminated areas at the bottom of the aquifers. The additional NAPL pools were created in the direction transverse to the flow in aquifer 2, which explains the higher mass flux relative to aquifer 1. |
Issue Date: | 2006 |
Type: | Text |
Language: | English |
Description: | 131 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006. |
URI: | http://hdl.handle.net/2142/83309 |
Other Identifier(s): | (MiAaPQ)AAI3243041 |
Date Available in IDEALS: | 2015-09-25 |
Date Deposited: | 2006 |
This item appears in the following Collection(s)
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Dissertations and Theses - Civil and Environmental Engineering
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Graduate Dissertations and Theses at Illinois
Graduate Theses and Dissertations at Illinois