کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8858140 | 1619287 | 2017 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biosynthesis of ZnO/SiO2 nanocatalyst with palash leaves' powder for treatment of petroleum refinery effluent
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Biosynthesis of ZnO/SiO2 nanocatalyst with palash leaves' powder for treatment of petroleum refinery effluent Biosynthesis of ZnO/SiO2 nanocatalyst with palash leaves' powder for treatment of petroleum refinery effluent](/preview/png/8858140.png)
چکیده انگلیسی
This work aims the synthesis and characterization of ZnO/SiO2 nanocatalyst from plant waste material by green route and application of this ZnO/SiO2 nanocatalyst for the treatment of petroleum refinery effluent. Butea monosperma (Palash) leaves' powder was used as reducing and stabilizing agent for synthesis of ZnO/SiO2 nanocatalyst. Palash leaves contain broad variability of biomolecules which work as reducing and capping agent. In this research work, COD and acenaphthylene which is Polycyclic Aromatic Hydrocarbons (PAH) were degraded by synthesizing ZnO/SiO2 nanocatalyst under UV-light in an annular photocatalytic reactor. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), FIELD emission gun-Scanning electron microscopy (FEG-SEM), Energy dispersive X-ray (EDX) and Transmission electron microscopy (TEM) analysis confirmed the formation of ZnO/SiO2 nanocatalyst. Characterization studies revealed that spherical and hexagonal nanoparticles with particle size ranging from 8â¯Â±â¯5 nm to 40â¯Â±â¯5 nm and mean particle with diameter of 20â¯Â±â¯5 nm were synthesized using this method which is stable in the environment. Brunauer, Emmett and Teller (BET) surface area of ZnO/SiO2 nanocatalyst is found to be 150.25 m2/g. Fractional Factorial design was applied to find optimum condition of process parameters and found that optimum percent. Removal of COD (mg/l), and acenaphthylene were achieved at reaction condition of 1 g/L of ZnO/SiO2 nanocatalyst loading, 30°C temperature and 4 h reaction time and found that optimum percent removal of COD (mg/l), and acenaphthylene is 75%, and 73% respectively. Various metals, naturally present in palash leaves' powder, decrease band gap of energy and improve photocatalytic activity of nanocatalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Resource-Efficient Technologies - Volume 3, Issue 4, December 2017, Pages 528-541
Journal: Resource-Efficient Technologies - Volume 3, Issue 4, December 2017, Pages 528-541
نویسندگان
Rajani Bharati, S. Suresh,