Preparation and Characterization of Asymmetric and Thin Film Composite Nanofiltration Membranes for Water Softening, M.Sc. Thesis Sharif University of Technology ; Mousavi, Abbas (Supervisor) ; Roosta Azad, Reza (Supervisor)
Abstract
In this study three type of nanofiltration membranes were prepared from PVC for water softening; (i) asymmetric PVC nanofiltration membrane, and two different thin film composite (TFC) membranes: (ii) polyamide (PA)/PVC composite membrane (iii) poly vinyl alcohol (PVA)/PVC composite membrane. Asymmetric nanofiltration membranes were prepared by phase inversion. The effect of PVC concentration, solvent (THF) and additive (PVP) on morphology and performance were studied by scanning electron microscopy (SEM) and measuring pure water flux and salt rejection. Increasing PVC concentration decreased pure water flux and increased salt rejection. Adding tetrahydrofuran(THF) decreased the pure water...
Cataloging briefPreparation and Characterization of Asymmetric and Thin Film Composite Nanofiltration Membranes for Water Softening, M.Sc. Thesis Sharif University of Technology ; Mousavi, Abbas (Supervisor) ; Roosta Azad, Reza (Supervisor)
Abstract
In this study three type of nanofiltration membranes were prepared from PVC for water softening; (i) asymmetric PVC nanofiltration membrane, and two different thin film composite (TFC) membranes: (ii) polyamide (PA)/PVC composite membrane (iii) poly vinyl alcohol (PVA)/PVC composite membrane. Asymmetric nanofiltration membranes were prepared by phase inversion. The effect of PVC concentration, solvent (THF) and additive (PVP) on morphology and performance were studied by scanning electron microscopy (SEM) and measuring pure water flux and salt rejection. Increasing PVC concentration decreased pure water flux and increased salt rejection. Adding tetrahydrofuran(THF) decreased the pure water...
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