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Numerical Approximation of Cation Exchange in Miscible Displacement through Soil Columns
Author(s) -
Lai SungHo,
Jurinak J. J.
Publication year - 1971
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1971.03615995003500060017x
Subject(s) - displacement (psychology) , nonlinear system , ion exchange , adsorption , material balance , cation exchange capacity , thermodynamics , chemistry , finite difference , materials science , mathematics , soil water , mathematical analysis , ion , physics , geology , soil science , organic chemistry , psychology , quantum mechanics , process engineering , engineering , psychotherapist
The cation exchange process in soil columns during the miscible displacement of cation solutions was studied. The model involves the assumption that equilibrium between the cation adsorbed and the cation in solution exists. The material balance equation that governs the miscible displacement of cations includes and exchange function and was solved by a finite difference method. This method is capable of solving the material balance equation whether a linear or nonlinear cation exchange isotherm defines the exchange reaction. The applicability of the model and method of solution was tested by conducting soil column experiments. The agreement between the numerical solution and the experimental values was good.