During past two decades, membrane developed from lab scale tools to extended industrial product that has verity of applications like desalination of seawater, industrial waste water treatment and also food industries. Membrane separation processes have advantages over conventional separation processes, including energy savings, the selectivity of the compounds obtained, the possibility of separation of thermolabile compounds, the simplicity of operating the system and a relatively easy scale up from lab to industrial scale. In contrast to the conventional refining process, the membrane process can be conducted at low temperatures, preserving the heat sensitive components of technological interest of the oil, such as natural antioxidants. A more stable product, with thus better quality can be obtained using membranes. Inherently Ceramic membranes have more stability than polymeric membranes, thus widespread investigations carried on manufacturing and development of Ceramic membranes nowadays. The capabilities of ceramic membranes include high-temperature durability, sufficient mechanical strength, chemical inertness, organic solvent resistance and unique surface characteristics. Furthermore, these membranes are resistant to biological attack and steam sterilization so that there is less likelihood of bacteria contamination. Such a feature is highly attractive for the food and pharmaceutical industries. In this study, manufacturing of a tubular alumina ceramic membrane by modified gel-casting method followed by dip-coating method to decrease the surface pore size and using gelatin as a gelling agent was investigated. In this work, optimum amount of dolapix dispersant for 50% Wt of alumina slurry was indicated as 00/65 grams dolapix per 100grams of alumina. The optimum amount of gelling agent (gelatin) and it’s dissolving temperature was investigated and 8%W gelatin based on the total used water which dissolved in 60centigrade was achieved. This amount and temperature made a prosity about 64% in substrate. For the next level of experiment, increasing the physical stability of membrane was investigated and the optimum amount of nano particle SiO 2 to be added to the slurry was measured 3%W based on the total alumina powder used in slurry. This amount increased the final physical stability of the membrane seven times more than before. The liquid desicant method was used for initial drying of the membrane and the effective parameters on drying speed and the amount of removal water were investigated.one of these effective parameters was the concentration of poly ethylene glaycol in desicant solution and the optimum concentration achieved was 15%W. Dip-coating method was used for surface modification of made membrane, thus an accurate machine was made to do this process as well. The slurry used for coating process was made from three different alumina particle size and the membranes were coated up to three times to achieve the desired pore size. The final membranes were used to separate hexane from vegetable oil and an oil rejection up to 44% and a permeation flux up to 11kg/m 2 h was achieved. Keywords : Ceramic membrane, Gel-casting, Dip-coating, hexane separation from oil