کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9623763 | 456583 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Decolorization and aromatic ring degradation kinetics of Direct Red 80 by UV oxidation in the presence of hydrogen peroxide utilizing TiO2 as a photocatalyst
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Decolorization and aromatic ring degradation kinetics of Direct Red 80 by UV oxidation in the presence of hydrogen peroxide utilizing TiO2 as a photocatalyst Decolorization and aromatic ring degradation kinetics of Direct Red 80 by UV oxidation in the presence of hydrogen peroxide utilizing TiO2 as a photocatalyst](/preview/png/9623763.png)
چکیده انگلیسی
Textile industry consumes considerable amounts of water during various processes such as dyeing. The existence of color and aromatic rings in the form of aromatic amines in textile wastewater is a very important problem. In this paper, photocatalytic decolorization and aromatic ring degradation of Direct Red 80 in a fixed bed photocatalytic reactor, utilizing a very simple analytical method, direct UV-vis spectrophotometric detection, has been investigated. Photocatalytic decolorization and aromatic ring degradation processes performed using a 5 l solution containing Direct Red 80. The initial concentration of Direct Red 80 was 50 mg lâ1. The radiation source was two 15 W UV-C lamps. A batch mode immersion photocatalytic reactor was utilized. The effect of variables such as pH and H2O2 concentration were studied. Bench scale simulated colored textile wastewater was completely decolorized in a relatively short time after UV irradiation with a low concentration of hydrogen peroxide. The lack of any absorbance in the UV-vis spectra was indicative of the complete aromatic ring degradation. Kinetics analysis indicates that the dye photocatalytic decolorization rates can usually be approximated pseudo-first-order model. UV/TiO2/H2O2 process proved capable of the complete degradation of the Direct Red 80.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 112, Issues 1â3, 1 September 2005, Pages 191-196
Journal: Chemical Engineering Journal - Volume 112, Issues 1â3, 1 September 2005, Pages 191-196
نویسندگان
Niyaz Mohammad Mahmoodi, Mokhtar Arami, Nargess Yousefi Limaee, Nooshin Salman Tabrizi,