Effect Of Graphene Oxide On The Properties Of Polymer Inclusion Membrane For Crystal Violet Extraction

The use of polymer inclusion membrane (PIM), a type of liquid membrane technology, can aid in the removal of dye effluents from various dye-based industries and reducing adverse effects on the environment. PIMs were used in this study to extract crystal violet (CV) dye from an aqueous solution. The PIMs were successfully fabricated with 50.0 wt% poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) as the base polymer, 40.0 wt% di-(2-ethylhexyl) phosphoric acid (D2 HPA) as the carrier, 10.0 wt% dioctyl phthalate (DOP) as the plasticizer, and graphene oxide (GO) as an additive. The amount of GO in the membrane formulation was altered in order to determine the optimum PIM with the maximum CV dye extraction efficiency. Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Ion Exchange Capacity (IC), and water uptake were used to characterize the physical and chemical properties of the fabricated PIMs. Several parameters were studied, including the effect of GO content in PIMs, initial CV dye concentration, and pH. The optimized membrane in the extraction of CV dye from aqueous solution was PIM with 1.5 wt% GO (M4). The optimized PIM obtained a maximum extraction efficiency of 99.88% at 2.0 mg/L initial CV dye concentration in alkaline conditions of pH 12. Hence, it is concluded that the introduction of GO in membrane composition can improve the properties and performance of PIMs in this study.