کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9451540 | 1307828 | 2005 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced chemical oxidation of aromatic hydrocarbons in soil systems
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhanced chemical oxidation of aromatic hydrocarbons in soil systems Enhanced chemical oxidation of aromatic hydrocarbons in soil systems](/preview/png/9451540.png)
چکیده انگلیسی
Fenton's destruction of benzene, toluene, ethylbenzene, and xylene (BTEX) was investigated in soil slurry batch reactors. The purpose of the investigation was to quantify the enhancement of oxidation rates and efficiency by varying process conditions such as iron catalyst (Fe(II) or Fe(III); 2, 5, and 10Â mM), hydrogen peroxide (H2O2; 30, 150, 300Â mM), and metal chelating agents (l-ascorbic acid, gallic acid, or N-(2-hydroxyethyl)iminodiacetic acid). Rapid contaminant mass destruction (97% after 3Â h) occurred in the presence of 300Â mM H2O2 and 10Â mM Fe(III). An enhanced removal rate (>90% removal after 15Â min and 95% removal after 3Â h) was also observed by combining Fe(III), N-(2-hydroxyethyl)iminodiacetic acid and 300Â mM H2O2. The observed BTEX mass removal rate constants (3.6-7.8Â ÃÂ 10â4Â sâ1) were compared to the estimated rate constants (4.1-10.1Â ÃÂ 10â3Â sâ1). The influence of non-specific oxidants loss (by reaction with iron hydroxides and soil organic matter) was also explored.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 61, Issue 7, November 2005, Pages 909-922
Journal: Chemosphere - Volume 61, Issue 7, November 2005, Pages 909-922
نویسندگان
Namgoo Kang, Inez Hua,