Efficient heavy metals and salts rejection using a novel modified polysulfone nanofiltration membrane

Abstract Recent research proclivity is about supplying water for drinking, urban and industrial applications which recognized as one of the most significant challenges that threaten humanity. Giving its simplicity high efficient yield, membrane technology has been preferred compared to other separation technologies wastewater treatment. In present research, KIT-6 (KIT: Korea Advanced Institute Science Technology) was functionalized by H-acid improve hydrophilic functional groups on surface. Different characterization tests were performed prove insertion (H-KIT-6), e.g., FT-IR, XRD, zeta potential FESEM analysis. Also, effects different loading H-KIT-6 morphology, characteristics performance Polysulfone (PSf) nanofiltration (NF) membranes investigated. The maximum pure flux (30.2 kg/m 2 h), lowest irreversible fouling ratio (3.96%) highest recovery (96.04%) obtained embedded with 0.1 wt.% (optimum membrane). synthesized evaluated rejection four salts (K SO 4 , MgSO KCl NaCl) heavy metal ions (As 3+ Hg 2+ ). NF also presented = 99.85% 99.27%) others. Finally, optimum treat a real case Gachsaran brackish assessed. As result, applying membrane, 565 mg/l, 28 mg/l 27 Ca 2− Mg rejected, respectively.