Dowex Monosphere 99K/320 was found to be more suitable to work in the SMB unit as compared to Dowex 50W-X2 due to greater resistance at high pressure. Batch experiments were carried out to estimate the adsorption parameters. The experimental results are compared with model prediction. The latter is computed by numerical solution of the mass balance equations of a kinetic model, using a method of lines approach and slope limiters for approximating the spatial operators. Indeed, very sharp concentration profiles travel trough the column and non-oscillatory schemes are necessary to avoid spurious oscillations and unrealistic negative concentration values.
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