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首页> 外文期刊>Journal of Hazardous Materials >Potential benefit of surfactants in a hydrocarbon contaminated soil washing process: Fluorescence spectroscopy based assessment
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Potential benefit of surfactants in a hydrocarbon contaminated soil washing process: Fluorescence spectroscopy based assessment

机译：表面活性剂在碳氢化合物污染的土壤洗涤过程中的潜在优势：基于荧光光谱的评估

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摘要

Soil washing is an ex situ soil remediation treatment process. The purpose of soil washing is to clean the major gravel and sand fractions, concentrating contamination into the fine silt and clay fractions. The addition of surfactants can improve the efficiency of this method. Here we report the use of UV fluorescence spectroscopy to assess the hydrocarbon cleaning process as a rapid and cost effective alternative to gas chromatography. Three wash solutions were tested on a total petroleum hydrocarbon contaminated soil: water, Sea Power 101 (SP101) at 1% (v/v) and Tween80 at 0.5% (w/v). The most effective to wash the gravel and sand was SP101 (54 and 65% improvement over the water only wash, respectively) which moved contamination to the silt fraction (94% of contaminants). Tween80 appeared not to enhance TPH removal efficiency from the gravel and sand fractions but did concentrate TPH in the effluent (95% more than water wash). In addition to TPH removal from gravel and sand, SP101 also showed potential benefit in the soil washing sedimentation process, enhancing sludge/water volume separation by 10% over the water only wash. In summary, fluorescence spectroscopy proved an effective technique to compare TPH removal efficiencies as part of soil washing laboratory based treatability testing.
机译：土壤洗涤是一种异地土壤修复处理方法。洗土的目的是清洁主要的砾石和沙子部分，将污染物集中到细小的淤泥和粘土部分中。添加表面活性剂可以提高该方法的效率。在这里，我们报告了使用紫外线荧光光谱法评估碳氢化合物清洁过程的方法，它是气相色谱法的一种快速且经济高效的替代方法。在总的石油烃污染的土壤上测试了三种洗涤溶液：水，1％（v / v）的Sea Power 101（SP101）和0.5％（w / v）的Tween80。清洗砾石和沙子最有效的方法是SP101（分别比纯水清洗分别提高了54％和65％），这将污染物转移到了淤泥中（占污染物的94％）。 Tween80似乎并没有提高TPH从砾石和沙子中去除的效率，但确实将TPH浓缩在废水中（比水洗多95％）。除了从砾石和沙子中去除TPH之外，SP101还显示了在土壤洗涤沉淀过程中的潜在优势，与仅用水洗涤相比，污泥/水体积分离提高了10％。总之，作为基于水洗实验室的可处理性测试的一部分，荧光光谱法证明了一种比较TPH去除效率的有效技术。

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  • 来源
    《Journal of Hazardous Materials》 |2012年第15期|p.141-147|共7页
  • 作者

    Amandine Uhmann; Thomas J. Aspray;

  • 作者单位

    Environmental Reclamation Services Ltd, Westerhill Road, Bishopbriggs, Glasgow C64 2QH, Scotland, UK;

    Environmental Reclamation Services Ltd, Westerhill Road, Bishopbriggs, Glasgow C64 2QH, Scotland, UK School of Life Sciences, Heriot-Watt University, Edinburgh EH14 4AS, Scotland, UK;

  • 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

    soil washing; hydrocarbon contamination; fluorescence; surfactant; tween80;

    机译：水洗碳氢化合物污染;荧光表面活性剂吐温80;

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