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首页> 外文会议>International Conference on Mechanics and Control Engineering >Removal and degradation of phenanthrene and pyrene from soil by coupling surfactant washing with photocatalysis
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Removal and degradation of phenanthrene and pyrene from soil by coupling surfactant washing with photocatalysis

机译：用光催化萃取表面活性剂洗涤除去土壤中菲和芘的除去和降解

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In this study, two environmental remediation technologies, surfactant washing and photocatalytic oxidation, have been investigated to remove and decompose phenanthrene (Phe) and pyrene (Pry). Aqueous solutions containing the anionic surfactant sodium dodecyl benzene sulfonate (SDBS) and the nonionic surfactant Tween-80 (TW-80) were used to extract the contaminants from the soil samples. The effects of concentration of surfactant, washing time and temperature on the desorption efficiency of the contaminants from soil samples were studied. The photocatalytic oxidation treatment of the obtained washing wastes, performed in the presence of Fenton-TiO_2 suspensions irradiated with a 250 W high pressure mercury lamp, showed an effective abatement of the two kinds of polycyclic aromatic hydrocarbons (PAHs) due to the relevant concentrations of organics in the waste. This study demonstrates the two-stage progress process can be an effective treatment method for PAHs not only desorption by soil washing but also degradation by photocatalytic oxidation.
机译：在该研究中，已经研究了两种环境修复技术，表面活性剂清洗和光催化氧化以除去和分解菲苯（PHE）和芘（PRY）。使用含有阴离子表面活性剂十二烷基苯磺酸钠（SDB）和非离子表面活性剂Tween-80（TW-80）的水溶液用于从土壤样品中提取污染物。研究了表面活性剂，洗涤时间和温度对土壤样品的污染物的解吸效率的影响。在用250W高压汞灯照射的Fenton-TiO_2悬浮液存在下进行的光催化氧化处理，在用250W高压汞灯照射的情况下进行，表明由于相关浓度，有效地减轻了两种多环芳烃（PAHS）废物中的有机物。本研究证明了两级进展过程可以是PAHS的有效处理方法，不仅是通过土壤洗涤的解吸，而且通过光催化氧化降解。

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