Solution of solute transport in unsaturated porous media by the method of characteristics

2003 ◽  
Vol 19 (6) ◽  
pp. 732-761 ◽  
Author(s):  
Jozef Ka?ur ◽  
Mohammed Shuker Mahmood
Keyword(s):  
Porous Media ◽  
Solute Transport ◽  
Method Of Characteristics ◽  
Unsaturated Porous Media ◽  
The Method Of Characteristics

scholarly journals Impact of microbial growth on water flow and solute transport in unsaturated porous media

2006 ◽  
Vol 42 (10) ◽  
Author(s):  
R. R. Yarwood ◽  
M. L. Rockhold ◽  
M. R. Niemet ◽  
J. S. Selker ◽  
P. J. Bottomley
Keyword(s):  
Porous Media ◽  
Solute Transport ◽  
Water Flow ◽  
Microbial Growth ◽  
Unsaturated Porous Media

A theoretical treatment of the effects of Ionic and non-ionic competitive adsorption during solute transport in soils

Soil Research ◽  
1984 ◽  
Vol 22 (1) ◽  
pp. 31 ◽  
Author(s):  
CJ Barnes ◽  
LAG Aylmore
Keyword(s):  
Solute Transport ◽  
Detailed Analysis ◽  
Adsorption Isotherms ◽  
Method Of Characteristics ◽  
Competitive Adsorption ◽  
Theoretical Treatment ◽  
The Method Of Characteristics ◽  
Solute Movement ◽  
Ionic Solutes ◽  
Water Contents

The method of characteristics is used to analyse multi-species solute movement through a non-linearly reactive soil taking dispersion into account. Both ionic and non-ionic solutes are considered, and it is shown that the shape of a solute front depends on the shape of the adsorption isotherms. At large times, overall solute movement is effected by a series of solute fronts moving independently. The composition of each front, and hence individual solute concentrations within the front, are determined by the degree of competition reflected in the adsorption isotherms. Varying water contents are considered explicitly, although the detailed analysis is restricted to uniform water contents for simplicity.

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