A flat PTFE membrane 0.02 m 2 with pore size 0.1µm, porosity 55%, thickness 60 µm, was tested for the removal of MIBK from aqueous solution, at feed flow 69.44 mL/sec, vacuum pressure (10.67, 12, 13.33, 14.67) kPa, temperature (34.8, 43.3, 47.8, 52.5, 55 °C), the results showed that the increase in the temperature