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. Author manuscript; available in PMC: 2018 Jun 21.
Published in final edited form as: Prog Polym Sci. 2016 Nov 10;81:209–237. doi: 10.1016/j.progpolymsci.2018.01.004

Figure 5.

Figure 5

Layers of typical TFC (thin film composite) RO membranes. The chemical structure of the polyamide active layer creates selectivity, from [59], Copyright 2015, reproduced with permission from Elsevier.