Operating line 1 2 operating line 2 3 equilibrium line

Figure 9.14. Operating diagram for two stages countercurrent adsorption.

The effluent accumulated during the occurrence of the break-through curve is:

The adsorption or ion exchange zone, that part of the bed in which the concentration changes from YBto Ye, is considered to have a constant height of Za m. If we use Ta for the time required for the adsorption zone to move its own height down the column after the zone has been established, then:

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