Figure 6.

Effective diffusion coefficients regressed from the shrinking core model for the batch and confocal uptake of lysozyme in SP Sepharose FF and SP 550 C as a function of the ionic strength for initial lysozyme concentrations of ≈1.5–2 mg/ml. Diffusivity estimates were obtained from measurements of the supernatant concentration as a function of time for batch experiments and from measurements of the adsorption front position for confocal experiments. The free solution diffusivity of lysozyme is 1.1 × 10⁻⁶ cm²/s.