چكيده به لاتين
Nowadays, oil and petroleum pollution of water resources have caused severe problems in industrial countries. Technology of membrane filtration is one of the most effective technologies for removal of petroleum products from water. A microfiltration alumina membrane with mean pore size diameter of 4 μm is fabricated with gel casting method with the use of starch as gelling agent. Alumina porous membrane with alumina volume percentages of 32, 37, 43 and 50 and starch volume percentage of 24 based on solid content is fabricated by sintering at 1450 °C and 1550 °C. The A43S24 – T1550 composition is selected as the optimized composition with density, open porosity, water absorption percentage and compressive strength calculated as 1.87 g.cm-3, 40%, 33% and 20 MPa, respectively.
Penetration of phenolic resin in porous alumina body by impregnation method is used for improving the surface characteristics of alumina membrane. Weight percentages of 10, 25, 50, 75 and pure resin is chosen for this experiment. Residue carbon percentage, density, open porosity and contact angle of the samples are measured after final pyrolysis. Permeate flux and rejection test for the removal of water – kerosene emulsion shows that AC7 composition with residue carbon, density, open porosity and contact angle of 7%, 2.25 ± 0.03 g.cm-2, 30% and 107 ± 7 ° has the best performance in water – kerosene removal with pure water permeate flux and rejection of 103 L.m-2.h-1 and 88% , respectively.
