کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9674346 | 1453204 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phenol and substituted phenols AOPs remediation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
The oxidation of phenol and two substituted species (4-nitrophenol and 4-chlorophenol) has been carried out by means of the O3, UV-vis, O3 + UV-vis, TiO2 + UV-vis, O3 + UV-vis + TiO2 and O3 + TiO2 systems. From UV-vis experiments, the quantum yield of these organics has been calculated (0.018, 0.005 and 0.017 mol per Einstein for phenol, 4-nitrophenol and 4-chlorophenol, respectively). Broadly speaking, the addition of titania powder results in a slight inhibition of the parent compound degradation rate, although a positive effect is experienced when measuring the chemical oxygen demand (COD) and total organic carbon (TOC) removals. Amongst the technologies investigated, those combining ozone and radiation show the best efficiency in terms of phenols elimination and also COD and TOC decay rates. A simple economy analysis of the processes illustrates how the combinations O3 + UV-vis and O3 + UV-vis + TiO2 are the most attractive technologies, although some additional considerations have to be taken into account.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 119, Issues 1â3, 17 March 2005, Pages 99-108
Journal: Journal of Hazardous Materials - Volume 119, Issues 1â3, 17 March 2005, Pages 99-108
نویسندگان
Olga Gimeno, MarÃa Carbajo, Fernando J. Beltrán, F. Javier Rivas,