کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9680839 1455505 2005 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photocatalytic oxidation of methyl orange in presence of titanium dioxide in aqueous suspension. Part I: Parametric study
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Photocatalytic oxidation of methyl orange in presence of titanium dioxide in aqueous suspension. Part I: Parametric study
چکیده انگلیسی
The photocatalytic oxidation of a mono azo dye methyl-orange (C14H14N3SO3Na) dye has been investigated in TiO2/UV aqueous suspensions irradiated by artificial UV-light until its complete mineralization was achieved. It was found that there was no degradation for the MeO in the dark and in the presence of TiO2. The dependence of dye photobleaching rate on the following parameters: (i) substrate concentration; (ii) catalyst amount; and (iii) pH was performed to optimize the experimental parameters. Varieties of commercial TiO2 catalysts using several crystalline were tested to compare their photoactivity. As a result, it was found that the efficiency of the process strongly depends on the working conditions. The highest degradation rate of MeO was obtained at optimum parameters such as: dosage TiO2 (0.8 g/L), initial pH (3) and low dye concentration (≤ 50 mg/L), using Degussa P25 as photocatalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 185, Issues 1–3, 1 November 2005, Pages 427-437
نویسندگان
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