Nitrification Process in a Porous Column

The first example demonstrates the nitrification problem in a porous medium. We only consider the three-species nitrification chain (Cho, 1971 van Genuchten, 1985)  

Cho derived an analytical solution for this transformation reactions. He made some assumptions to derive a simplified version for the transformation problem. The main assumption is the linear equilibrium condition for cation exchange reactions of NH. Writing Eq. (6) for the three species NH (Cj), NO 2 (C2) and NO (C3) in one-dimensional form with the assumption of constant solution flow and constant dispersion value for the species, yields (van Genuchten, 1985)  

The solution is initially free of nitrogen components (initial conditions), 

The example presented here only involves application of the parent component (Cl). Further input parameter values are  

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