The nonlinear chromatography process is simulated with high precision and resolution schemes to catch the shock, which are TVD (Total Variation Decreas) scheme and MmB (Locally Maximum-minimum Bounds preserving) scheme. Through the simulation, the shock effect is determined in higher resolution and the retention times are calculated in higher resolution and the retention times are calculated in higher Precision. The comparison among results of theoretical analyse, experiments and the presend numerical simulation shows that the simulation results can betalcenas a fair approximation for nonlinear chromatography process.

In this paper, Using the Galerkin method, the study is made, which is about the Inflence of axial dispersion on the elution profile and retention time t_R in nonlinear chromatography, The results show that when the diffusion coefficient D increases, the elution curve changes from "shock type" to "Gauss type", and the rate of chang of t_R due to D from positive to negative.