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Right arrow Vadose Zone Processes and Chemical Transport

Coupled Processes of Fluid Flow, Solute Transport, and Geochemical Reactions in Reactive Barriers

Jeongkon Kima,d,*, Franklin W. Schwartzb, Tianfu Xuc, Heechul Choid and In S. Kima,d

a Korea Institute of Water and Environment, Korea Water Resources Corporation, Daejon, Korea
b Department of Geological Sciences, The Ohio State University, Columbus, OH 43210
c Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
d Department of Environmental Science and Engineering, Kwangju Institute of Science and Technology, Gwangju, Korea



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Fig. 1. Reaction zone (red) and total Fe concentrations (mg L–1) in pore water (contour lines) observed at 38 d (Shi, 2000).

 


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Fig. 2. Profiles using the Carman–Kozeny model at 38 d for (a) permeability, (b) Fe(OH)3(s), (c) Fe3+, (d) pH, and (e) Cl.

 


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Fig. 3. Profiles using Eq. [1] at 38 d for (a) permeability, (b) Fe(OH)3(s), (c) Fe3+, (d) pH, and (e) Cl.

 


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Fig. 4. Development of reaction zones.

 


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Fig. 5. Random fields for (a) calcite content and (b) permeability.

 


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Fig. 6. Profiles for (a) permeability, (b) Fe(OH)3(s), (c) Fe3+, (d) pH, and (e) Cl in the chemically heterogeneous porous medium at 38 d.

 


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Fig. 7. Profiles for (a) permeability, (b) Fe(OH)3(s), (c) Fe3+, (d) pH, and (e) Cl in the physically heterogeneous porous medium at 38 d.

 





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