油酸二乙醇酰胺对润滑油在水-土体系中吸附行为的影响研究

采用振荡平衡法对含油酸二乙醇酰胺（简称ODEA）润滑油在水-土体系中的吸附行为进行研究，考察在水-土体系中含ODEA润滑油的吸附动力学特征及其吸附等温曲线。结果表明：润滑油及含ODEA润滑油均能较快地被土壤吸附，吸附动力学曲线符合Lagergren伪二级动力学方程，吸附等温曲线符合Freundlich和Henry吸附等温模型；ODEA可以抑制润滑油在土壤中的吸附量和吸附速率，ODEA质量浓度为4 mg/L时，抑制吸附效果最为显著。

EFFECT OF OLEIC DIETHANOLAMIDE ON ADSORPTION BEHAVIOR OF LUBRICATING OIL IN WATER-SOIL SYSTEM

The adsorption behavior of oleic diethanolamide (ODEA) in water - soil system was studied by oscillating equilibrium method. The adsorption kinetic characteristics and adsorption isotherm curves of ODEA lubricating oil in the system were investigated. The lube oil and the ODEA lube both are absorbed by soil quickly. The adsorption dynamic curve conforms to the Lagergren pseudo-second-order dynamics equation, and the adsorption isothermal curve accords with the Freundlich adsorption isothermal model and the Henry liner adsorption isothermal model. ODEA can inhibit the adsorption capacity and rate of lubricating oil in the soil, while the concentration of ODEA of 4mg/L is the best.