Aminated-Fe3O4 nanoparticles filled chitosan/PVA/PES dual layers nanofibrous membrane for the removal of Cr(VI) and Pb(II) ions from aqueous solutions in adsorption and membrane processes

作者：Koushkbaghi Shahnaz; Zakialamdari Amirabbas; Pishnamazi Mohammad; Ramandi Hossein Fasih; Aliabadi Majid; Irani Mohammad

来源：Chemical Engineering Journal, 2018, 337: 169-182.

DOI：10.1016/j.cej.2017.12.075

• Chitosan
• Fe3O4
• Nanofiber
• Metal ions
• Adsorption
• Membrane

In the present study, dual layers mixed matrix membranes (MMMs) were prepared by incorporating aminated-Fe3O4 nanoparticles into the chitosan/polyvinyl alcohol nanofibers over the polyethersulfone (PES) membrane for the removal of Cr(VI) and Pb(II) ions in batch adsorption and membrane processes. The synthesized aminated-Fe3O4 nanoparticles were characterized using XRD, FESEM and FTIR analysis. The morphology and roughness of membranes were determined using SEM, TEM and AFM analysis. The effect of adsorption operating parameters such as pH (2-7), contact time (0-60 min), initial concentration of metal ions (20-1000 mgL(-1)) and temperature (30-50 degrees C) on the Cr(VI) and Pb(II) ions sorption was studied. Kinetic models including pseudo-first-order, pseudo-second-order and intra-particle diffusion models were used to describe the kinetic data of metal ions sorption using nanofibrous membrane. The experimental isotherm data were analyzed using Freundlich, Langmuir and Dubinin-Radushkevich isotherm models. In membrane system, the influence of nanofiber thickness (10-30 mu m), aminated-Fe3O4 concentration (0-4 wt%), feed concentration (5-20 mg L-1) and temperature (30-50 degrees C) on the water flux and metal ions recovery was investigated. The reusability of prepared nanofibrous membranes was also studied in both batch and membrane modes.

• 出版日期2018-4-1