کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
80981 49412 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
TiO2-assisted degradation of acid orange 7 textile dye under solar light
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
TiO2-assisted degradation of acid orange 7 textile dye under solar light
چکیده انگلیسی

Photocatalytic degradation of acid orange 7 (AO7) in aqueous systems was successfully achieved by the combination of TiO2 with potassium persulphate under solar light using a photochemical reactor with recirculation. Degradation of AO7 involves color removal and mineralization. The employment of TiO2 removed ∼85% of color from the 0.2 mM AO7 aqueous solution under solar light; while, ∼66% of color was abated using the persulphate ion as oxidant in the absence of TiO2 under similar conditions in 2 h. However, over 90% of color removal was achieved by combining TiO2 and the persulphate ion for the same solution under similar conditions. Color removal was faster at pH 3. Mineralization of AO7 was followed by measuring chemical oxygen demand (COD). Negligible COD abatement of the textile dye was observed in the absence of persulphate ions (S2O82−) while over 70% of COD abatement was observed for the initial dye concentrations of 0.2–0.7 mM employing a mix of TiO2–S2O82− under solar light.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy Materials and Solar Cells - Volume 91, Issues 15–16, 22 September 2007, Pages 1492–1495
نویسندگان
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