Fig. 2From: Standing-wave Design of Three-Zone, open-loop non-isocratic SMB for purification3-zone open-loop simulated moving bed In Zone III, the feed is loaded into the column. Zone II assures that the less retained component is contained so that it does not leak into the extract product. In Zone I, the desorbent is fed into the column to collect the more retained product as extract. The colors in this figure are the same as Fig. 1Back to article page