Adsorption characteristics of phenanthrene — A typical petroleum hydrocarbon on the aquifer media

This paper researched on the adsorption kinetics and thermodynamics of the typical component of petroleum hydrocarbons -phenanthrene on the four typical media: silty sand, medium sand, coarse sand, and gravel sand from the aquifer in an oilfield, with a self-made rotary adsorption device. The result showed that the adsorption kinetics of phenanthrene on the four aquifer media accords with the pseudo-second-order kinetics model, and the adsorption thermodynamic process meets the Henry adsorption model. The order of the adsorption rate and capacity of phenanthrene on the four aquifer media is silt sand>; medium sand>; coarse sand>; gravel sand. When the benzene and naphthalene co exist in the solution, the adsorption capacity of phenanthrene reduces, while the adsorption rate increases.