کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
580611 1453152 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photodecolorization of Eriochrome Black T using NiS-P zeolite as a heterogeneous catalyst
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Photodecolorization of Eriochrome Black T using NiS-P zeolite as a heterogeneous catalyst
چکیده انگلیسی
NiS-P zeolite was prepared by ion exchange and precipitation procedures and it was characterized by FT-IR, SEM and thermal methods. The prepared composite was used as a catalyst in the photodecolorization process of Eriochrome Black T (E.B.T.) dye in aqueous solution under UV irradiation. The effect of key operating parameters such as catalyst dosage, temperature, initial concentration of the dye and initial pH of the solutions were studied on the decolorization process of dye. The primary objective was to determine the optimal conditions for each of the parameters. UV-vis spectrophotometric measurements were performed for the determination of decolorization and mineralization extents. The optimal operation parameters were found as follows: pH 9.1, 0.8 g L−1 of catalyst loading and 40 ppm of dye concentration. The NiS particles out of zeolite framework did not show significant decolorization efficiency. The decolorization process obeyed first-order kinetics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 176, Issues 1–3, 15 April 2010, Pages 629-637
نویسندگان
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