Synthesis of silica nanoparticles from blast furnace slag as cost-effective adsorbent for efficient azo-dye removal
Synthesis of silica nanoparticles (NSBFS) from commercial blast furnace slag (BFS) and its efficiency to remove methylene blue (MB) from water as well as the desilicated blast furnace slag (DBFS) were investigated in this study. The sorbent materials were characterized by X-ray diffraction (XRD), X-...
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| Format: | Article |
| Language: | English |
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Egyptian Petroleum Research Institute
2018-12-01
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| Series: | Egyptian Journal of Petroleum |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110062118300321 |
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| author | Abdelghaffar S. Dhmees Nagla M. Khaleel Sawsan A. Mahmoud |
| author_facet | Abdelghaffar S. Dhmees Nagla M. Khaleel Sawsan A. Mahmoud |
| author_sort | Abdelghaffar S. Dhmees |
| collection | DOAJ |
| description | Synthesis of silica nanoparticles (NSBFS) from commercial blast furnace slag (BFS) and its efficiency to remove methylene blue (MB) from water as well as the desilicated blast furnace slag (DBFS) were investigated in this study. The sorbent materials were characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), N2 adsorption-desorption isotherms, dynamic light scattering (DLS), scanning electron microscopy (SEM), and Energy Dispersive X-ray Analysis (EDAX). Different physiochemical parameters such as initial pH of the dye, sorbent dosage, contact time, and initial dye concentration were studied. The pseudo-first-order and pseudo-second-order models were applied to evaluate the kinetic mechanism of the adsorption process. The results show that the process follows the pseudo-second-order kinetics using NSBFS or DBFS. The adsorption equilibrium values were obtained using Langmuir and Freundlich equations, Langmuir model showed the best correlation indicate that NSBFS and DBFS are homogeneous surface. The batch adsorption experiments showed that the maximum sorption was observed at pH = 10 and 8 and the maximum uptake capacities (qm) for MB were 80.8 and 109.8 mg/g using DBFS and NSBFS, respectively. Keywords: Blast furnace slag, Desilication, Methylene blue, Nanosilica |
| format | Article |
| id | doaj-art-c810ab9cc18e498e9f6fc508d6bd9d09 |
| institution | OA Journals |
| issn | 1110-0621 |
| language | English |
| publishDate | 2018-12-01 |
| publisher | Egyptian Petroleum Research Institute |
| record_format | Article |
| series | Egyptian Journal of Petroleum |
| spelling | doaj-art-c810ab9cc18e498e9f6fc508d6bd9d092025-08-20T02:02:01ZengEgyptian Petroleum Research InstituteEgyptian Journal of Petroleum1110-06212018-12-012741113112110.1016/j.ejpe.2018.03.012Synthesis of silica nanoparticles from blast furnace slag as cost-effective adsorbent for efficient azo-dye removalAbdelghaffar S. Dhmees0Nagla M. Khaleel1Sawsan A. Mahmoud2Corresponding author.; Egyptian Petroleum Research Institute, Cairo, EgyptEgyptian Petroleum Research Institute, Cairo, EgyptEgyptian Petroleum Research Institute, Cairo, EgyptSynthesis of silica nanoparticles (NSBFS) from commercial blast furnace slag (BFS) and its efficiency to remove methylene blue (MB) from water as well as the desilicated blast furnace slag (DBFS) were investigated in this study. The sorbent materials were characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), N2 adsorption-desorption isotherms, dynamic light scattering (DLS), scanning electron microscopy (SEM), and Energy Dispersive X-ray Analysis (EDAX). Different physiochemical parameters such as initial pH of the dye, sorbent dosage, contact time, and initial dye concentration were studied. The pseudo-first-order and pseudo-second-order models were applied to evaluate the kinetic mechanism of the adsorption process. The results show that the process follows the pseudo-second-order kinetics using NSBFS or DBFS. The adsorption equilibrium values were obtained using Langmuir and Freundlich equations, Langmuir model showed the best correlation indicate that NSBFS and DBFS are homogeneous surface. The batch adsorption experiments showed that the maximum sorption was observed at pH = 10 and 8 and the maximum uptake capacities (qm) for MB were 80.8 and 109.8 mg/g using DBFS and NSBFS, respectively. Keywords: Blast furnace slag, Desilication, Methylene blue, Nanosilicahttp://www.sciencedirect.com/science/article/pii/S1110062118300321 |
| spellingShingle | Abdelghaffar S. Dhmees Nagla M. Khaleel Sawsan A. Mahmoud Synthesis of silica nanoparticles from blast furnace slag as cost-effective adsorbent for efficient azo-dye removal Egyptian Journal of Petroleum |
| title | Synthesis of silica nanoparticles from blast furnace slag as cost-effective adsorbent for efficient azo-dye removal |
| title_full | Synthesis of silica nanoparticles from blast furnace slag as cost-effective adsorbent for efficient azo-dye removal |
| title_fullStr | Synthesis of silica nanoparticles from blast furnace slag as cost-effective adsorbent for efficient azo-dye removal |
| title_full_unstemmed | Synthesis of silica nanoparticles from blast furnace slag as cost-effective adsorbent for efficient azo-dye removal |
| title_short | Synthesis of silica nanoparticles from blast furnace slag as cost-effective adsorbent for efficient azo-dye removal |
| title_sort | synthesis of silica nanoparticles from blast furnace slag as cost effective adsorbent for efficient azo dye removal |
| url | http://www.sciencedirect.com/science/article/pii/S1110062118300321 |
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