| 초록 |
Forward osmosis (FO) membrane processes have attracted keen interest in water purification and desalination due to process simplicity and low energy consumption. However, current polymeric desalination membranes show low water fluxes in FO mode due to internal concentration polarization (ICP). Generally, mechanically robust, hydrophobic materials have been used as support layer materials for thin film composite (TFC) membranes. In this study, various hydrophilic materials were used as additives in phase inversion processes to prepare support layers suitable for FO membranes. Polyamide layer was interfacially polymerized on the composite support layers. Effect of hydrophilic additives on phase inversion process, support layer properties, morphologies and FO flux were investigated. Prepared PA-TFC membranes exhibited considerably higher water fluxes than pristine membranes, which might be caused mainly by enhanced hydrophilicity and reduced mass transfer resistance of support layers. |
