Fig. 5: Effect of solution conditions and membrane properties on the separation performance for differentiating Li+ and Mg2+.
From: Preference of negatively charged membranes in magnesium and lithium separation by nanofiltration
Effect of pH on the ionic rejection of (a) DK and (b) PEINF when filtrating 15 mmol L−1 MgCl2 and 15 mmol L−1 LiCl mixture. Variation of the ion rejections of (c) DK and (d) PEINF with respect to the MLR in the feed (Concentration: 2000 ppm). e Pore size, geometric standard deviation, ion rejection (Feed: 15 mmol L−1 MgCl2 and 15 mmol L−1 LiCl mixture) and zeta potential of the resulting membranes. f The optimized structure and corresponding calculated interaction energy between the membrane unit and ions. g Molecular snapshots and concentration profiles (the gray regions correspond to membrane locations). The data are presented as mean ± SD, n = 3.
