悬浮颗粒物对海面溢油的吸附模式

为更好地了解悬浮颗粒物（SPM）作用下沉潜油的形成速度和程度，选择取自渤海南部油田（YYH）、辽河油田（LH）和中东原油（ZD）的3种原油，模拟研究了高岭土和试验原油的相互作用.结果表明，3种试验油的吸附动力学过程基本相似，沉潜率随振荡时间呈指数形式增长后趋于稳定.高岭土对原油的吸附满足Langmuir等温吸附式，基本属于单分子层吸附，YYH、LX和ZD的饱和吸附量分别为914，1297，2083mg/g.当SPM的浓度为500mg/L时，YYH、LX和ZD的最大沉潜率分别为37%、45%和59%.以吸附作用机理为基础，讨论了分散的油滴在颗粒物-水界面的分配特征，提供了1种模式计算沉潜率随悬浮颗粒物浓度变化的关系式.本研究可为沉潜油形成及漂移扩散数值模式研究提供基础数据和科学参考.

Adsorption mode of suspended particulate matter on sea surface oil spill

In order to better understand the formation rate and extent of submerged oil under the effect of SPM, this study selected three crude oils as test oils, which were taken from the Bohai southern oilfield (YYH), Liaohe Oilfield (LH) and Middle East (ZD), respectively. The interaction between kaolin and the test crude oils were studied. The results showed that the adsorption kinetics of the three test oils are basically similar, and the rate of sinking oils tends to be stable after exponential growth. The adsorption of the crude oils by kaolin satisfies the Langmuir isotherm, which belongs to monolayer adsorption. The saturated adsorption capacities of YYH, LX and ZD were 914, 1297 and 2083mg/g, respectively. When the concentration of SPM was 500mg/L, the maximum sinking rates of YYH, LX and ZD were 37%, 45% and 59%, respectively. Based on the adsorption mechanism, we discussed the distribution characteristics of dispersed oil droplets at the particle-water interface, and provided a model to calculate the relationship between the sinking rates and the concentration of SPM. This study can provide basic data and scientific basis for the study of numerical models of submerged oil formation and drift diffusion.