Fabrication and Characterization of Blending Nanofiltration Membranes Based on PES / PVDF for Wastewater Treatment

Document Type : Research Paper

Authors

1 Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, Iran

2 Department of Chemical Engineering, Faculty of Engineering, Arak University, Iran

Abstract

In this research, blending nanofiltration membranes based on polyethersulfone (PES)/poly vinylidene fluoride (PVDF) were prepared by using phase inversion method. PVDF has high piezoelectricity property in comparison with other polymers, so its blending with other polymers produces new structure membranes with appropriate fouling resistant. Moreover, the effect of different PVDF concentrations in the casting solution on membrane performance was studied. The flux, salt rejection and water content measurements and also scanning electron microscope (SEM) and FTIR analysis were carried out for the membrane characterization. Obtained results showed that water content and porosity were initially increased and then decreased. Also, the results demonstrated that the permeability flux and the pure water flux of PES/PVDF blend membranes were higher than pristine PES membrane. The salt rejection has improved up to 20%, when the concentration of PVDF is 0.5 wt.%.
 

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Main Subjects


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