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نویسندگان مقالات پربازدید :
مجله مهندسی شیمی
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
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  • ethyl lactate-fenton treatment of soil highly contaminated with polycyclic aromatic hydrocarbons (pahs)

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    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 860
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this study reports on a novel ethyl lactate based fenton treatment for soils contaminated with polycyclic aromatic hydrocarbons (pahs). the degradation of four pahs, i.e. phenanthrene, anthracene, fluoranthene and benzo[a]pyrene in soil using this novel treatment was compared to ethanol-fenton and conventional fenton treatments. ethyl lactate/water system manifested a greater desorption capacity than ethanol/water system. a 6 h ethyl lactate/water (fc = 0.60) pretreatment followed by a 4 h ethyl lactate/water (fc = 0.20) based fenton treatment effectively degraded all tested pahs (>97% removal). ethanol/water treatment was highly selective towards the degradation of anthracene and benzo[a]pyrene, with ∼30% of phenanthrene and fluoranthene remaining untreated, while conventional fenton resulted in 31–57% of untreated pahs after 24 h. the pseudo-first order kinetic reaction rate constants of ethyl lactate/water based fenton system were 12–42 times higher than conventional fenton treatment in soil. the efficiency of treatment was mainly caused by enhanced solubility and desorption, and to a less extent, pah reactivity, hydrogen peroxide stabilisation and enhanced radical dotoh radicals generation by the fe3+/lactate complex formed.

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