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首页> 外文期刊>Marine pollution bulletin >Evaluating crude oil chemical dispersion efficacy in a flow-through wave tank under regular non-breaking wave and breaking wave conditions
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Evaluating crude oil chemical dispersion efficacy in a flow-through wave tank under regular non-breaking wave and breaking wave conditions

机译：在常规不间断波和不间断波条件下评估流通池中的原油化学分散效率

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摘要

Testing dispersant effectiveness under conditions similar to that of the open environment is required for improvements in operational procedures and the formulation of regulatory guidelines. To this end, a novel wave tank facility was fabricated to study the dispersion of crude oil under regular non-breaking and irregular breaking wave conditions. This wave tank facility was designed for operation in a flow-through mode to simulate both wave- and current-driven hydrodynamic conditions. We report here an evaluation of the effectiveness of chemical dispersants (Corexit® EC9500A and SPC 1000™) on two crude oils (Medium South American [MESA] and Alaska North Slope [ANS]) under two different wave conditions (regular non-breaking and plunging breaking waves) in this wave tank. The dispersant effectiveness was assessed by measuring the water column oil concentration and dispersed oil droplet size distribution. In the absence of dispersants, nearly 8-19% of the test crude oils were dispersed and diluted under regular wave and breaking wave conditions. In the presence of dispersants, about 21-36% of the crude oils were dispersed and diluted under regular waves, and 42-62% under breaking waves. Consistently, physical dispersion under regular waves produced large oil droplets (volumetric mean diameter or VMD ≥ 300 μm), whereas chemical dispersion under breaking waves created small droplets (VMD ≤ 50 μm). The data can provide useful information for developing better operational guidelines for dispersant use and improved predictive models on dispersant effectiveness in the field.
机译：需要在类似于开放环境的条件下测试分散剂的有效性，以改进操作程序和制定监管准则。为此，制造了一种新型的波箱设备，以研究在规则的不中断波和不规则的中断波条件下原油的扩散。该波浪水箱设施设计为以流通模式运行，以模拟波浪和电流驱动的流体动力条件。我们在这里报告了在两种不同的波浪条件下（常规非破坏性和非破坏性）化学分散剂（Corexit EC9500A和SPC 1000™）对两种原油（中南美[MESA]和阿拉斯加北坡[ANS]）的有效性的评估。在这个波浪缸中）。通过测量水柱油浓度和分散的油滴尺寸分布来评估分散剂的有效性。在没有分散剂的情况下，将近8-19％的测试原油在规则波和破碎波条件下进行了分散和稀释。在存在分散剂的情况下，约21-36％的原油在规则波下被分散和稀释，而在碎波下则为42-62％。一致地，规则波下的物理分散会产生大的油滴（体积平均直径或VMD≥300μm），而碎波下的化学分散会产生小液滴（VMD≤50μm）。数据可以为开发更好的分散剂使用操作指南和改进分散剂在野外效果的预测模型提供有用的信息。

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  • 来源
    《Marine pollution bulletin》 |2009年第5期|735-744|共10页
  • 作者

    Zhengkai Li; Kenneth Lee; Thomas King; Michel C. Boufadel; Albert D. Venosa;

  • 作者单位

    Centre for Offshore Oil and Gas Environmental Research, Bedford Institute of Oceanography, Fisheries and Oceans (DFO) Canada, One Challenger Drive,Dartmouth, NS, Canada B2Y 4A2;

    Centre for Offshore Oil and Gas Environmental Research, Bedford Institute of Oceanography, Fisheries and Oceans (DFO) Canada, One Challenger Drive,Dartmouth, NS, Canada B2Y 4A2;

    Centre for Offshore Oil and Gas Environmental Research, Bedford Institute of Oceanography, Fisheries and Oceans (DFO) Canada, One Challenger Drive,Dartmouth, NS, Canada B2Y 4A2;

    Department of Civil and Environmental Engineering, Temple University, Philadelphia, PA 19122, USA;

    National Risk Management Research Laboratory, US EPA, Cincinnati, OH 45268, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    oil spill; dispersant; waves; currents; dynamic dispersant effectiveness; particle size distribution;

    机译：漏油事件;分散剂波浪;电流动态分散剂效力;粒度分布;

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