Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditions
The present work was carried out to evaluate the removal of Coomassie brilliant blue dye by adsorption onto a magnetized activated carbon nanocomposite (MNSA) prepared from Nigella sativa L. (NS) waste. Different techniques, including infrared spectroscopy, scanning electron microscopy, and nitrogen...
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| Format: | Article |
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Elsevier
2019-05-01
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| Series: | Journal of Advanced Research |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090123218301292 |
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| author | Nour T. Abdel-Ghani Ghadir A. El-Chaghaby El-Shaimaa A. Rawash Eder C. Lima |
| author_facet | Nour T. Abdel-Ghani Ghadir A. El-Chaghaby El-Shaimaa A. Rawash Eder C. Lima |
| author_sort | Nour T. Abdel-Ghani |
| collection | DOAJ |
| description | The present work was carried out to evaluate the removal of Coomassie brilliant blue dye by adsorption onto a magnetized activated carbon nanocomposite (MNSA) prepared from Nigella sativa L. (NS) waste. Different techniques, including infrared spectroscopy, scanning electron microscopy, and nitrogen adsorption/desorption, were used to characterize MNSA to investigate its adsorption properties. Adsorption experiments were carried out by simultaneously optimizing four variables that usually present a strong effect in adsorption studies. A full 24 factorial design with 3 central points was used. The four independent variables were the initial pH of the dye solution (pH), the initial dye concentration (Co), the adsorbent mass (m), and the contact time (t). The sorption capacity (q) of the adsorbent and the percentage of dye removal (% Rem) from an aqueous solution were used as the responses of the factorial design. The results indicated that pH, Co, and m were essential factors for the overall optimization of both responses (q and % Rem) and that several interactions of two, three and four factors occurred. Based on the design of the experiments (DOE), the optimized conditions for adsorption were pH = 2.00, Co = 40.0 mg L−1, m = 30.0 mg, and t = 3.0 h. Under these conditions, both responses, q and % Rem, were maximized, with a desirability of 85.54%. The findings of this study could be useful for industrial wastewater treatment systems. Keywords: Nigella sativa L. waste, Nanocomposite, Coomassie brilliant blue, Central composite design, Adsorption |
| first_indexed | 2024-04-12T20:32:48Z |
| format | Article |
| id | doaj.art-751320f3b0a34b4e9e30689ea5f992e9 |
| institution | Directory Open Access Journal |
| issn | 2090-1232 |
| language | English |
| last_indexed | 2024-04-12T20:32:48Z |
| publishDate | 2019-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Advanced Research |
| spelling | doaj.art-751320f3b0a34b4e9e30689ea5f992e92022-12-22T03:17:42ZengElsevierJournal of Advanced Research2090-12322019-05-01175563Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditionsNour T. Abdel-Ghani0Ghadir A. El-Chaghaby1El-Shaimaa A. Rawash2Eder C. Lima3Chemistry Department, Faculty of Science, Cairo University, Giza 12613, EgyptRCFF, Agricultural Research Center, 588 El-Orman, Giza, Egypt; Corresponding author.RCFF, Agricultural Research Center, 588 El-Orman, Giza, EgyptInstitute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, 91501-970, P.O. Box 15003, Porto Alegre, RS, BrazilThe present work was carried out to evaluate the removal of Coomassie brilliant blue dye by adsorption onto a magnetized activated carbon nanocomposite (MNSA) prepared from Nigella sativa L. (NS) waste. Different techniques, including infrared spectroscopy, scanning electron microscopy, and nitrogen adsorption/desorption, were used to characterize MNSA to investigate its adsorption properties. Adsorption experiments were carried out by simultaneously optimizing four variables that usually present a strong effect in adsorption studies. A full 24 factorial design with 3 central points was used. The four independent variables were the initial pH of the dye solution (pH), the initial dye concentration (Co), the adsorbent mass (m), and the contact time (t). The sorption capacity (q) of the adsorbent and the percentage of dye removal (% Rem) from an aqueous solution were used as the responses of the factorial design. The results indicated that pH, Co, and m were essential factors for the overall optimization of both responses (q and % Rem) and that several interactions of two, three and four factors occurred. Based on the design of the experiments (DOE), the optimized conditions for adsorption were pH = 2.00, Co = 40.0 mg L−1, m = 30.0 mg, and t = 3.0 h. Under these conditions, both responses, q and % Rem, were maximized, with a desirability of 85.54%. The findings of this study could be useful for industrial wastewater treatment systems. Keywords: Nigella sativa L. waste, Nanocomposite, Coomassie brilliant blue, Central composite design, Adsorptionhttp://www.sciencedirect.com/science/article/pii/S2090123218301292 |
| spellingShingle | Nour T. Abdel-Ghani Ghadir A. El-Chaghaby El-Shaimaa A. Rawash Eder C. Lima Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditions Journal of Advanced Research |
| title | Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditions |
| title_full | Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditions |
| title_fullStr | Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditions |
| title_full_unstemmed | Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditions |
| title_short | Magnetic activated carbon nanocomposite from Nigella sativa L. waste (MNSA) for the removal of Coomassie brilliant blue dye from aqueous solution: Statistical design of experiments for optimization of the adsorption conditions |
| title_sort | magnetic activated carbon nanocomposite from nigella sativa l waste mnsa for the removal of coomassie brilliant blue dye from aqueous solution statistical design of experiments for optimization of the adsorption conditions |
| url | http://www.sciencedirect.com/science/article/pii/S2090123218301292 |
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