The sorption capacities of the samples were evaluated with petroleum products of different density: gasoline AI-80 (ρ=0.734 g/cm3); diesel fuel (ρ=0.818 g/cm3); industrial petroleum (ρ=0.886 g/cm3); heavy crude petroleum (ρ=0.937 g/cm3) and light crude petroleum (ρ=0.792 g/cm3). The petroleum sorption properties of the samples were determined using the procedure described in [32]. For that purpose 1 g adsorbent material was placed in an unwoven fabric pack then immersed into the petroleum(200 ml) or petroleum products. The sample was left in the petroleum for 30 min without any agitation. The unwoven fabric pack with adsorbent material was taken out of petroleum and drained of excess oil for 10 min then weighed. The experiment is conducted at room temperature.