Fresh-water resource scarcity is threatening our society. Urbanization, industrialization, population growth and climate change are making big challenge to human s water resource security. Based on this critical situation, scientists are paying more and more attention to desalination. Traditional desalination methods employ distillation process. These methods play an important role in water supply service in some water-lacked places. However, due to high energy consumption of these methods, the price of produced water is very high. Therefore, developing new desalination technologies with low energy consumption is of high interest and one of them has attracted researchers attention, which is reverse osmosis (RO).(1) RO utilizes the semi-permeable membrane as a filter, which allows the water or relatively small molecules pass through itself, but prevents the large molecules or ions from penetrate. This technology significantly reduced the energy consumption compared to the distillation methods and quickly takes more than 60 percent of the total installed desalination capacity.(2) The performance of RO technology strongly depends on the material of membranes plays an important role. In the past decades, polymers, for instance polyamide and cellulose acetate, dominate the semi-permeable membrane RO industry for their good salt rejection efficiency and low cost of energy consumption. However, even with the advantages of polymer membranes, the final cost of produced water is still high. That s why fresh-water resource still remain the concern. Since the first time that graphene was produced from graphite, it caught researcher’s attention all over the world for its ultra-thin 2D structure, excellent conductivity and transparency, etc. Soon after, graphene and its derivatives, such as graphene oxide and reduced graphene oxide, exhibit potential in desalination due to their thin 2D structure and expandability.(3) This work explores the possibility of application of graphene derivatives in a relatively practical desalination process. In the present project, GO (by the Hammer method), RGO (from heating in air atmosphere) and cellulose acetate membranes with GO and RGO were produced. Desalination tests were also performed for samples produced by systematically varying different parameters of GO, RGO and fabrication of cellulose acetate membranes.