چكيده به لاتين
One of the most important factors in membrane formation is the viscosity of the solution which is very effective in membrane formation (pore size, porosity, hydrophilicity). In order to increase the uniformity of the ultrafiltration membrane and against the inverse relationship between permeability and rejection of the membrane, the parameters affecting the viscosity (solution temperature and casting speed) were optimized by Design Expert using Central Composite Design (CCD). The mixed matrix membranes were then prepared by dispersing the nanoparticles into the polymer matrix. XRD, SEM, FTIR, FESEM, AFM and contact angle tests were used to evaluate the synthesized nanoparticles and the prepared membranes. Increase in pure water fluxes for APT, Closite, CNT, NaY membranes, 61%,30%¬88,%-85,respectively, Based on the results, MOF-PVDF composite matrix membranes showed the best flux and rejection. U2 membrane (0.05 wt.%) Showed a 88% pure water flux and a near 100% rejection and 51% increase in flux recovery ratio compared to pure PVDF membrane, respectively. The MIL3 membrane (0.1wt.%) Exhibited the best performance among the nanoparticles with 111% improvement in pure water flux and about 100% rejection and 64% improved flux recovery ratio.
