College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
Mar Pollut Bull. 2019 Nov;148:66-74. doi: 10.1016/j.marpolbul.2019.07.069. Epub 2019 Aug 5.
Floating oil and sediments can interact to form oil-particle aggregates (OPAs) in marine environments. Laboratory batch experiments were conducted to investigate the effects of the concentration and size of sediment, temperature, oil types and chemical dispersant on the formation of OPAs. The results showed that the mass of OPAs and oil-particle aggregation rate are mainly related to the sediment concentration. Under the same mass concentration, more oil droplets can be trapped by smaller particles. Nevertheless, larger particles tend to interact more quickly with oil droplets. The effect of temperature on the formation of OPAs is substantially attributed to its influence on oil viscosity, and there is a threshold for oil viscosity which will bring about the maximum OPAs. Spilled oil with a high asphaltene can interact more effectively with the sediments. Appropriate addition of chemical dispersant is favorable for the formation of OPAs while excess addition will inhibit it.
浮油和沉积物在海洋环境中可以相互作用形成油-颗粒聚集体（OPAs）。进行了实验室批量实验，以研究沉积物浓度和粒径、温度、油类型和化学分散剂对 OPA 形成的影响。结果表明，OPA 的质量和油-颗粒聚集率主要与沉积物浓度有关。在相同的质量浓度下，较小的颗粒可以捕获更多的油滴。然而，较大的颗粒往往与油滴更快地相互作用。温度对 OPA 形成的影响主要归因于其对油粘度的影响，并且存在一个油粘度的阈值，超过这个阈值会产生最大的 OPA。含高沥青质的溢油与沉积物的相互作用更为有效。适当添加化学分散剂有利于 OPA 的形成，而过量添加则会抑制其形成。
