کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10372663 | 877769 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reductive transformation of p-nitrophenol by Fe(II) species: The effect of anionic media
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
Electron exchange between aqueous Fe(II) and structural Fe(III) of iron minerals has been illustrated for understanding the reduction of nitroaromatic compounds (NAC). However, factors influencing Fe(II)-induced the reduction of NAC still remain elusive. In this paper, p-nitrophenol (1.5 mM) was selected to explore the effects of pH, the stabilizing ligands (Clâ, SO42â) of ferrous ions and the extra addition of iron hydroxide on the reduction of NAC via Fe(II) species. The results indicate that the reduction degree of is much lower in SO42â medium than that in Clâ medium at pH 7.6. p-Nitrophenol reduction increased in SO42â medium and slightly decreased in Clâ medium when Fe hydroxide was extra added. Clâ strength (0.01-0.1 mol Lâ1) has no obvious effect on p-NP reduction. SO42â species and its dosage have markedly inhibitory effect on p-NP reduction due to the selective adsorption of SO42â and the formation of sulphated surface complexes on the fresh Fe hydroxide.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 263, Part 2, 15 December 2013, Pages 556-561
Journal: Journal of Hazardous Materials - Volume 263, Part 2, 15 December 2013, Pages 556-561
نویسندگان
Yongjuan Wu, Lina Geng, Xiaorui Wang, Rufen Chen, Yu Wei, Dong Wu,