صبا رحماني

In this study, the PVDF/rGO-ZnO composite membrane was prepared by the layering method of polyvinylidene fluoride (PVDF) solution containing graphene oxide functionalized on polytetrafluoroethylene (PTFE) support membrane for in used in the vacuum membrane distillation process. The coating process was done using vacuum filtration method. By using preliminary tests and then by using design of experiments with Design Expert software, optimal amounts of rGO-ZnO nanoparticles and PVDF polymer were determined. By examining the results obtained from the eva‎luation of the constructed membranes, an optimal membrane was designed and constructed with a flow flux equal to 106.40 LMH and a salt rejection equal to 99.62%, which are acceptable values for the membrane distillation process. The results showed that, in fact, the flux and salt rejection values of the optimized modified membrane have improved by 48% and 26.6%, respectively, compared to the optimized pure membrane. XRD, FTIR, DLS analyzes were used to investigate the properties of graphene oxide and functionalized graphene oxide, and also to eva‎luate the structural behavior of the synthesized membranes, various analyzes such as FESEM, AFM, Mapping and water contact angle were used.

تقطير غشايي تحت خلأ، گرافن¬اكسيد، غشاي PTFE، PVDF، عامل¬دار كردن گرافن¬اكسيد

Vacuum membrane distillation, Graphene oxide, PTFE membrane, PVDF, Functionalization of graphene oxide.

saba Rahmani

Dr. Toraj Mohammadi