...
首页> 外文期刊>Environmental Pollution >Effects of oil dispersant and oil on sorption and desorption of phenanthrene with Gulf Coast marine sediments
【24h】

Effects of oil dispersant and oil on sorption and desorption of phenanthrene with Gulf Coast marine sediments

机译:分散剂和油脂对菲在墨西哥湾沿岸海洋沉积物中吸附和解吸的影响

获取原文
获取原文并翻译 | 示例
           

摘要

Effects of a model oil dispersant (Corexit EC9500A) on sorption/desorption of phenanthrene were investigated with two marine sediments. Kinetic data revealed that the presence of the dispersant at 18 mg/L enhanced phenanthrene uptake by up to 7%, whereas the same dispersant during desorption reduced phenanthrene desorption by up to 5%. Sorption isotherms confirmed that at dispersant concentrations of 18 and 180 mg/L, phenanthrene uptake progressively increased for both sediments. Furthermore, the presence of the dispersant during desorption induced remarkable sorption hysteresis. The effects were attributed to added phenanthrene affinity and capacity due to sorption of the dispersant on the sediments. Dual-mode models adequately simulated sorption isotherms and kinetic data in the presence of the dispersant. Water accommodated oil (WAO) and dispersant-enhanced WAO increased phenanthrene sorption by up to 22%. This information is important for understanding roles of oil dis-persants on the distribution and transport of petroleum PAHs in seawater-sediments.
机译:用两种海洋沉积物研究了模型油分散剂(Corexit EC9500A)对菲吸附/解吸的影响。动力学数据表明,在18 mg / L的分散剂存在下,菲的吸收量最多可提高7%,而在解吸过程中,相同的分散剂最多可将菲的吸附量降低5%。吸附等温线证实,在18和180 mg / L的分散剂浓度下,两种沉积物的菲吸收逐渐增加。此外,在解吸过程中分散剂的存在引起明显的吸附滞后。该影响归因于由于分散剂在沉积物上的吸附而增加的菲亲和力和容量。在存在分散剂的情况下,双模式模型可以充分模拟吸附等温线和动力学数据。含水油(WAO)和增强分散剂的WAO将菲吸附量提高了22%。该信息对于理解油分散剂在海水沉积物中对石油多环芳烃的分布和运输的作用非常重要。

著录项

  • 来源
    《Environmental Pollution》 |2014年第2期|240-249|共10页
  • 作者单位

    Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, USA;

    Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, USA;

    Bureau of Ocean Energy Management, GOM Region, Office of Environment, New Orleans, LA 70123, USA;

    Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, USA,Institute of Environmental Science, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, China;

    Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, 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; Oil dispersant; Polycyclic aromatic hydrocarbon; Sediment; Sorption;

    机译:漏油事件;油分散剂;多环芳烃;沉淀;吸附;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号