The petroleum sorption capacity (PSC) of the sample was calculated according to the equation:
PSC = (M1-M2) -1;
where M1 is the mass of the petroleum adsorbed by the unwoven fabric pack with adsorbent material andM2 is the mass of the petroleum adsorbed by the unwoven fabric pack without adsorbent material.
The sorption procedure was carried out at different time intervals up to the equilibrium time.