Modeling and Optimization of BT and DBT Photooxidation over Multiwall Carbon Nanotube-Titania Composite by Response Surface Methodology
This study investigates optimization of benzothiophene (BT) and dibenzothiophene (DBT) removal via a photocatalytic process by using central composite design (CCD) method. Temperature, pH, and p-25 to MWCNT ratio (g/g) in the composite structure are considered as design factors. According to the res...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2018/9716383 |
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| author | Molood Barmala Mohammad Behnood |
| author_facet | Molood Barmala Mohammad Behnood |
| author_sort | Molood Barmala |
| collection | DOAJ |
| description | This study investigates optimization of benzothiophene (BT) and dibenzothiophene (DBT) removal via a photocatalytic process by using central composite design (CCD) method. Temperature, pH, and p-25 to MWCNT ratio (g/g) in the composite structure are considered as design factors. According to the results, temperature has the greatest impact on removal rate. In optimal condition, after being exposed to UV lamps (9 W) for 20 min, 59.8% of the solutions’ BT was removed, while DBT was completely removed. Although the generated structure band gap is 3.4, but due to the presence of MWCNTs in the structure, it is capable of absorbing visible light, and this leads to complete removal of DBT and 42% removal of BT under visible light radiation (in similar circumstances). Kinetics analysis of thiophene’s reaction showed that, in the presence of visible light, first order removal rate constants for DBT and BT are 7.98 and 0.953 1/h, respectively. |
| format | Article |
| id | doaj-art-85d309456c744a1292366a68e5a128d2 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-85d309456c744a1292366a68e5a128d22025-02-03T05:47:59ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2018-01-01201810.1155/2018/97163839716383Modeling and Optimization of BT and DBT Photooxidation over Multiwall Carbon Nanotube-Titania Composite by Response Surface MethodologyMolood Barmala0Mohammad Behnood1Department of Chemical Engineering, Dezful Branch, Islamic Azad University, Dezful, IranDepartment of Petroleum and Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, IranThis study investigates optimization of benzothiophene (BT) and dibenzothiophene (DBT) removal via a photocatalytic process by using central composite design (CCD) method. Temperature, pH, and p-25 to MWCNT ratio (g/g) in the composite structure are considered as design factors. According to the results, temperature has the greatest impact on removal rate. In optimal condition, after being exposed to UV lamps (9 W) for 20 min, 59.8% of the solutions’ BT was removed, while DBT was completely removed. Although the generated structure band gap is 3.4, but due to the presence of MWCNTs in the structure, it is capable of absorbing visible light, and this leads to complete removal of DBT and 42% removal of BT under visible light radiation (in similar circumstances). Kinetics analysis of thiophene’s reaction showed that, in the presence of visible light, first order removal rate constants for DBT and BT are 7.98 and 0.953 1/h, respectively.http://dx.doi.org/10.1155/2018/9716383 |
| spellingShingle | Molood Barmala Mohammad Behnood Modeling and Optimization of BT and DBT Photooxidation over Multiwall Carbon Nanotube-Titania Composite by Response Surface Methodology International Journal of Photoenergy |
| title | Modeling and Optimization of BT and DBT Photooxidation over Multiwall Carbon Nanotube-Titania Composite by Response Surface Methodology |
| title_full | Modeling and Optimization of BT and DBT Photooxidation over Multiwall Carbon Nanotube-Titania Composite by Response Surface Methodology |
| title_fullStr | Modeling and Optimization of BT and DBT Photooxidation over Multiwall Carbon Nanotube-Titania Composite by Response Surface Methodology |
| title_full_unstemmed | Modeling and Optimization of BT and DBT Photooxidation over Multiwall Carbon Nanotube-Titania Composite by Response Surface Methodology |
| title_short | Modeling and Optimization of BT and DBT Photooxidation over Multiwall Carbon Nanotube-Titania Composite by Response Surface Methodology |
| title_sort | modeling and optimization of bt and dbt photooxidation over multiwall carbon nanotube titania composite by response surface methodology |
| url | http://dx.doi.org/10.1155/2018/9716383 |
| work_keys_str_mv | AT moloodbarmala modelingandoptimizationofbtanddbtphotooxidationovermultiwallcarbonnanotubetitaniacompositebyresponsesurfacemethodology AT mohammadbehnood modelingandoptimizationofbtanddbtphotooxidationovermultiwallcarbonnanotubetitaniacompositebyresponsesurfacemethodology |