Fig. 3: Charge-selective dynamic adsorption of organic dye molecules by AOPIM-1 membranes.
From: Microporous polymer adsorptive membranes with high processing capacity for molecular separation
a Zeta potential of AOPIM-1 membrane at pH 3-10; b The dynamic separation performance of AOPIM-1 membrane at different pH condition for different dyes (concentration 20 ppm, applied pressure 0.2 MPa, pH = 3/10); c, d The separation (MO/MB) of two dye molecules with similar molecular weights but different charges under different pH condition (concentration 10 ppm MO + 10 ppm MB, applied pressure 0.2 MPa, pH = 3/10); e Comparison of AOPIM-1 membranes with reported adsorptive membranes with respect to their permeation flux and adsorptive capacity22,24,25,26,27; f Comparison of AOPIM-1 membranes with reported membranes with respect to their permeation flux and dye rejection/removal efficiency. The effective flux and processing capacity of the membrane in this study is calibrated under the criterion of 99% rejection ratio of dye molecule20,24,47,55,56,57,58,59,60,61,62,63,64.
