| 硝酸浓度对橄榄石基活性炭特性的影响(英文) |
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| 引用本文： | Nouha Soudani,Souad Souissi-najar,Abdelmottaleb Ouederni. 硝酸浓度对橄榄石基活性炭特性的影响(英文)[J]. 中国化学工程学报, 2013, 21(12): 1425-1430. DOI: 10.1016/S1004-9541(13)60638-2 |
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| 作者姓名： | Nouha Soudani Souad Souissi-najar Abdelmottaleb Ouederni |
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| 作者单位： | National School of Engineers of Gabes, University of Gabes, Gabes 6029, Tunisia |
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| 摘 要： | In this work we investigated the effect of nitric acid concentration on the pore structure, surface chemistry and liquid phase adsorption of olive stone based activated carbon prepared by mixing process using phosphoric acid and steam as activating agents. Chemicals and textural characterization show that the increase of HNO3 concentration increases considerably the total acidic groups but decreases specific surface area and pore volume. The study of adsorption in aqueous solutions of two organics, phenol and methylene blue, on raw and oxidized activated carbon indicates that the treatment of mixed activated carbon with different concentrations of nitric acid improves the adsorbent capacity for methylene blue at HNO3 concentrations less or equal to 2 mol·L 1, while it has a negative effect on phenol adsorption.
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| 关 键 词： | activated carbon oxidation nitric acid concentration surface characteristics adsorption |
| 收稿时间： | 2012-04-19 |
Influence of Nitric Acid Concentration on Characteristics of Olive Stone Based Activated Carbon |
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| Nouha Soudani,Souad,Souissi-najar Abdelmottaleb,Ouederni. Influence of Nitric Acid Concentration on Characteristics of Olive Stone Based Activated Carbon[J]. Chinese Journal of Chemical Engineering, 2013, 21(12): 1425-1430. DOI: 10.1016/S1004-9541(13)60638-2 |
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| Authors: | Nouha Soudani Souad Souissi-najar Abdelmottaleb Ouederni |
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| Affiliation: | National School of Engineers of Gabes, University of Gabes, Gabes 6029, Tunisia |
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| Abstract: | In this work we investigated the effect of nitric acid concentration on the pore structure, surface chemistry and liquid phase adsorption of olive stone based activated carbon prepared by mixing process using phosphoric acid and steam as activating agents. Chemicals and textural characterization show that the increase of HNO3 concentration increases considerably the total acidic groups but decreases specific surface area and pore volume. The study of adsorption in aqueous solutions of two organics, phenol and methylene blue, on raw and oxidized activated carbon indicates that the treatment of mixed activated carbon with different concentrations of nitric acid improves the adsorbent capacity for methylene blue at HNO3 concentrations less or equal to 2 mol·L-1, while it has a negative effect on phenol adsorption. |
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| Keywords: | activated carbon oxidation nitric acid concentration surface characteristics adsorption |
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