Water resources are limited in many areas of the world, and sometimes even these limited resources are negligently contaminated. One of the polluting factors of water is oil and its derivatives. Oil absorption using textiles is one of the common ways to separate oil from water. In this study, a separator filter was fabricated by three types of textiles with different properties for testing. The experiments were performed using three different concentrations of 10, 20 and 30% oil. In this study, three types of BC, PET and PP textiles in the presence of horizontal and vertical drainages were investigated. The PET and PP textiles are made of nonwoven polyester and polypropylene fibers, respectively, and the BC textile is a two-component nonwoven textile of both polyester and polypropylene fibers, which was used for the first time. Flow through the textiles was turbulent. Coefficients of flow were calculated using non-Darcy flow relations and optimization method. The results showed that at low oil concentrations, the oil absorption had a inverse realation with the porosity and turbulent flow coefficients, But at higher concentrations, the effect of these agents was less and instead, the effect of the concentration and the intrinsic ability of the non woven fibers is greater. The best performance was related to PP and PET with horizontal drainage that had 95 and 91 absorption rates, respectively. A model was developed based on in mass conservation law for textiles that simulated the amount of oil output at all concentrations. Adaptation of this model to the experimental results was investigated, with normalized root mean square errors of less than 10% in most of the cases, showed high modeling accuracy. Key Words: Oil, Adsorption, Nonwoven textiles, Hydraulic Coefficients of non darcy flow, Isolation filter.