해양오염제거용 천연분말상 유흡착제의 흡착 특성

Abstract

The amount of petroleum consumption has been increased according to the industrialization and it leads to the increase of the possibility of marine oil pollution. In Korea, some countermeasures including oil skimmer, gelling agent and herding agent of oil have been used for the remediation of the pollution. However, most of them have lots of shortcomings in the application under in-situ condition, because they are sensitive to the situation such as geographical feature, the wind and the tide. In reported literature, the natural powdered oil absorbent which is made of peat moss is an effective mean to clean spilled oil from lake or coast. However, the peat moss is a natural resource which is only produced from a specific cold weather area like Canada. This indicates that the alternative materials which is readily obtained from everywhere are needed for powdered oil absorbent. Therefore, in the study, some natural materials including pine leaves and straw are tested as the alternative materials for the absorbent. The raw materials were dried and treated by heat at various temperature during sevaral periods and then, shattered by a grain cracking machine. The oil sorption capacity of the prepared materials was compared according to the methods of heat treatment and their size. The amount of hydrogen cyanide from combustion of the absorbents was measured to confirm their final disposal methods. The biodegradability test of the absorbents was carried out to evaluate if the use of absorbents cause a side pollution in the coast. The heat treatment of pine leaves enhanced the capacity of oil sorption and decreased the water sorption. The maximum oil sorption was observed when the material was treated at 180℃ for 60 min. The amount of hydrogen cyanide from the combustion were low as 0.09ml/g, 0.07ml/g for pine leaves and straw, respectively. It means that the final disposal by combustion might be feasible. The amount of organic carbon which was extracted from pine leaves during 7 days was amount to 0.015g organic carbon from one gram of pine leaves, but the degradation was as fast as glucose. It is conclude that the pine leaves can be used as a good raw material for the powdered oil absorbent like peat moss.