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Figure 2.3. Schematic representation of hollow fibre and concentration polarisation profile for a normal asymmetric membrane and a reverse asymmetric membrane, where (a) skin layer, (b) porous layer, (J) permeate flux, (Cp.) concentration of the solute in the permeate, (Cb) concentration of the solute in the bulk solution, and (Cm) concentration of the solute at the surface of the skin layer (Guerra et al., 1996).
