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. 2019 Mar 15;7:135. doi: 10.3389/fchem.2019.00135

Figure 1.

Figure 1

The use of polymer-based or IL-based ATPSs for separations critically depends on selective partitioning of the molecule over impurities. Impeller agitation is often employed to speed up equilibrium partitioning. Depending on viscosity and density differences and interfacial tension values, physical separation can be as simple as sedimentation or as complex as industrial centrifugation to isolate the liquid phase containing the molecule of interest.