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Petroleum hydrocarbon release behavior study in oil-sediment aggregates: turbulence intensity and chemical dispersion effect

机译：沉积物中石油烃释放行为的研究：湍流强度和化学弥散效应

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This study investigated the effects of turbulence and oil dispersants on release of petroleum hydrocarbons in oil-sediment aggregates. A kinetic study showed that the static oil release process could be fitted to the first-order kinetics model. The oil concentration increased with increasing temperature and salinity, while remaining independent of pH. The dispersant desorption ability of petroleum hydrocarbons followed the sequence of: Tween 80 > Tween 85 > Span 80 > DOSS. In the presence of turbulence, the maximum release ratio was 40.28%. However, the combination of dispersants and turbulence had a smaller effect than turbulence alone. Furthermore, residual n -alkanes and PAHs in the sediments were analyzed. The results showed higher proportions of C _(15) –C _(35) and 2–3 ring PAHs in residual oil. These results can help assess the fate and distribution of oil spills in marine environments.
机译：这项研究调查了湍流和油分散剂对沉积油团聚体中石油烃释放的影响。动力学研究表明，静态油的释放过程可以适合一阶动力学模型。油的浓度随温度和盐度的增加而增加，而与pH无关。石油烃的分散剂解吸能力遵循以下顺序：吐温80>吐温85>跨度80> DOSS。在存在湍流的情况下，最大释放率为40.28％。然而，分散剂和湍流的组合比单独的湍流具有较小的作用。此外，分析了沉积物中残留的正构烷烃和多环芳烃。结果表明，渣油中C _（15）–C _（35）和2–3环PAH的比例更高。这些结果可以帮助评估海洋环境中溢油的命运和分布。

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