The Comparison of Separation Performance of Nanofiltration Membranes by HQ-Fe3O4 And Feq3 Nanoparticles Including 8-Hydroxyquinoline

In this research, 8-hydroxyquinoline was applied to synthesize FeQ3 nanoparticles and modification of Fe3O4 nanoparticles. Afterwards, synthesized FeQ3 and modified iron nanoparticles (HQ-Fe3O4) were used to prepare nanofiltration membranes. Therefore, by incorporation of different concentrations of nanoparticle as an additive into the PES as membrane matrix, PES/FeQ3 and PES/HQ-Fe3O4 nanofiltration membranes were constructed. FTIR analysis was used to nanoparticle and membrane characterization. Moreover, membranes morphology was evaluated by SEM and AFM analysis. The separation performance of prepared membranes was examined by pure water flux, MgSO4 rejection. The results showed the highest pure water flux (17.6 L/m2h) for M4 in 0.5 wt.% nanoparticles for both types of membranes. While it was 7.1 L/m2h for the pure membrane. Furthermore, the MgSO4 rejection increased to 91% in 0.5 wt.% of HQ-Fe3O4 nanoparticles, and it was 86% in 0.5 wt.% of Fe/Q3 nanoparticles. Moreover, the fouling resistance of fabricated membranes enhanced by incorporation these nanoparticles.